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Littelfuse Inc Patents
What Littelfuse Inc has filed at the patent office — applications as well as grants, because a filing is on the record eighteen months before anyone has to say what it was for.
LFUS on carbonthat →Filings on file
58
Granted
0
Still pending
58
Filed under
5 names
58 filings
Newest filing first. A pending application has no patent number yet, and most never get one.
| Invention | Patent |
|---|---|
| LOW VOC COATING FOR HIGH-TEMPERATURE MOVSH01C 7/12Filed as Dongguan Littelfuse Electronics Company Limited2026-04-23Hao Cheng | pending |
| REVERSE BLOCKING INSULATED-GATE BIPOLAR TRANSISTORH10D 62/105, H10D 12/032, H10D 12/01, H10D 62/142, H10D 62/137, H10D 12/441, H10D 84/0109, H10D 62/102, H10D 84/038, H10D 62/393, H10D 12/411, H10W 10/181, H10W 10/30, H10P 90/1914, H10W 10/031Filed as Littelfuse, Inc.2026-04-03Peter Waind | pending |
| LOW-COST ELECTRODE FOR METAL OXIDE VARISTORSH01C 7/102, H01C 1/14, H01C 1/142, H01C 7/108, H01C 7/112, H01C 17/12, H01C 17/288Filed as Dongguan Littelfuse Electronics Company Limited2026-03-30Ping He | pending |
| INLINE FUSE HOLDER FOR MULTIPLE FUSESH01H 85/20, H01H 85/201, H01H 85/0411, H01H 85/0417, H01H 85/0452, H01H 85/147, H01H 85/2015, H01H 85/2035, H01H 85/22, H01H2085/0555, H01H2085/207Filed as Suzhou Littelfuse OVS Co., Ltd.2026-03-27Shangchun Pan | pending |
| INLINE FUSE HOLDERH01H 85/24, H01H 85/25, H01H 85/0078, H01H 85/0241, H01H 85/0411, H01H 85/0417, H01H 85/201, H01H 85/2015, H01H 85/203, H01H 85/2035, H01H2085/209Filed as Suzhou Littelfuse OVS Co., Ltd.2026-03-27Andrew Jozwiak | pending |
| REED SENSOR WITH WRAP-BACK SWITCH DESIGNH01H 36/00, H01H 9/02Filed as Dongguan Littelfuse Electronics Company Limited2026-03-25Jowell Xiao | pending |
| PRE-CHARGE SHORT CIRCUIT DETECTION FOR USE IN SOLID STATE PROTECTION SYSTEMSG01R 31/52, H02H 3/087, H02H 1/043, H02H 3/093, H02H 9/001, H02H 9/002, H02H 9/025Filed as Littelfuse, Inc.2026-03-18Michael Gambuzza | pending |
| TVS DIODE HAVING ASYMMETRIC BREAKDOWN VOLTAGE AND METHOD OF FORMATIONH10D 8/20, H10D 8/021, H10D 62/60, H10D 8/024, H10D 8/041, H10D 89/611, H10D 8/422Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2026-03-18Jifeng Zhou | pending |
| PRINTED CIRCUIT BOARD WITH EMBEDDED SMD DEVICEH05K 1/184, H05K 1/115, H05K 3/4697, H05K2201/0355, H05K2201/0394, H05K2201/09645, H05K2201/09854, H05K2201/10454, H05K2201/10553, H05K2201/10636Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2026-03-16Chuan Fang Chin | pending |
| ELECTRICALLY ISOLATED DISCRETE PACKAGE WITH HIGH PERFORMANCE CERAMIC SUBSTRATEH10W 74/111, H10W 40/255, H10W 70/461, H10D 62/8503, H10D 62/8325, H10W 90/701, H10W 70/65, H10W 40/259, H10W 70/481, H10W 70/68, H10W 70/692, H10W 40/22, H10W 70/6875Filed as Littelfuse, Inc.2026-03-06Aalok Bhatt | pending |
| BI-DIRECTIONAL ASYMMETRIC TRANSIENT VOLTAGE SUPPRESSORH10D 8/20, H10D 89/611, H02H 9/04, H10D 89/931, H10D 8/045, H10D 84/221, H10D 88/00, H10D 89/921, H10D 8/411, H10D 89/60, H10W 42/60, H10W 90/00, H10W 90/20, H02H 9/041Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2026-02-17Jifeng Zhou | pending |
| METAL TAB FOR POWER SEMICONDUCTOR MODULEH10W 72/621, H10W 74/111, H10W 72/07652, H10W 90/764, H10W 72/07653, H10W 72/60Filed as Littelfuse, Inc.2026-02-11Thomas Lachmann | pending |
| PDU DEVICE WITH HETEROGENEOUS FEEDTHROUGHB60R 16/0238, H02G 3/22, H05K 5/00, B60R 16/0239, H02B 1/46, H05K 5/0247Filed as Suzhou Littelfuse OVS Co., Ltd.2026-02-09Renan Liu | pending |
| SEALED CONNECTION RECEPTACLES FOR POWER DISTRIBUTION MODULESB60R 16/0238, H01R 13/5202, B60R 16/0239, H01R 13/506, H01R 13/5216, H01R 24/66, H01R 43/18, H01R 43/20, H02G 3/088Filed as Suzhou Littelfuse OVS Co., Ltd.2025-12-24Yuanxue LI | pending |
| HEAT ABSORBING LAYER FOR METAL OXIDE VARISTORH01C 1/08, H01C 10/00, H01C 1/084, H01C 7/102, H01C 7/108, H01C 7/12, H01C 7/126, H01C 10/46Filed as Dongguan Littelfuse Electronics Company Limited2025-12-10Oluwaseun K. Oyewole | pending |
| UNSEALED SINGLE FUSE HOLDERH01H 85/2045, H01H 85/205, H01H 85/2035, H01H 85/22, H01H 85/25, H01H2085/2055, H01H2085/2065, H01H2085/2075, H01H2085/209Filed as Littelfuse, Inc.2025-11-17Andrew Jozwiak | pending |
| SOLDERLESS AND PRESSURE CONTACT CONNECTIONH10W 90/701, H10W 72/50, H10W 70/427, H10W 70/099, H10W 72/931, H10W 70/65, H10W 70/658, H10W 70/481, H10W 72/30, H10W 90/734, H10W 70/60, H10W 40/255, H01R 12/585Filed as Littelfuse, Inc.2025-11-17Tiburcio A. Maldo | pending |
| FUSE MODULEH01H 85/175, H01H 85/1755, H01H 69/02, H01H 85/055, H01H 85/143, H01H 85/2005, H01H 85/2035, H01H2069/027, H01H2085/025, H01H2231/026, H01H2239/034Filed as Littelfuse, Inc.2025-11-14Jonathan Hernandez | pending |
| SYSTEMS AND METHODS FOR IDENTIFYING A LOCATION OF A THERMAL EVENT DETECTED BY A TEMPERATURE SENSING TAPEG01K 1/026, G01K 3/005, G01K 7/16, G01K 1/143, G01K 7/20, G01K 7/24, G01K2003/145, G01K2007/166, G01K2213/00, H01M 10/486Filed as Littelfuse, Inc.2025-10-28Claran Martis | pending |
| METHOD OF MAKING ISOLATION STRUCTURE THYRISTORH10D 18/241, H10D 62/106, H10D 62/104, H10D 62/206, H10D 62/141, H10D 64/233, H10D 62/192, H10D 18/01Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-10-08Jifeng Zhou | pending |
| PPTC MATERIAL WITH ONE-STEP HOT APPLICATION PROCESSC08J 3/28, H01C 7/028, H01H 69/02, B29C 65/02, B29C 66/02241, B29C 66/028, B29C 66/71, B29L2031/3406, C08J 3/203, H01C 7/02, H01C 7/027, H01C 17/00, H01C 17/06586, H01H 85/048, H01H2085/0483Filed as Littelfuse, Inc.2025-10-08Jianhua Chen | pending |
| RESISTANCE STABLE POLYMER POSITIVE TEMPERATURE COEFFICIENT (PPTC) MATERIALC08L 23/06, C08L 27/16, H01C 7/028, C08K 3/04, C08K 3/22, C08K 3/26, C08K 9/02, C08K2201/001, C08L 27/14, C08L 27/18, H01B 1/18, H01B 1/24, H01B 13/00, H01C 7/022, H01C 7/023, H01C 7/027, H01C 17/00Filed as Littelfuse, Inc.2025-10-08Flory Zhou | pending |
| Thermally Protected Metal Oxide Varistor with Indicator CircuitH01C 1/144, H01C 7/126, H01C 1/148, H01C 7/12, H01H 37/761Filed as Dongguan Littelfuse Electronics Company Limited2025-09-23Hailang Tang | pending |
| UNIDIRECTIONAL LOW VOLTAGE SIDACTORH10D 62/104, H10D 89/611, H10D 89/711, H10D 8/00, H10D 89/931, H10D 62/106, H10D 62/129, H10D 8/041, H10D 62/128, H10D 89/921, H10D 8/411Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-09-22Glenda Zhang | pending |
| VARISTOR INCLUDING REFLOWABLE THERMAL PROTECTION DEVICE ON VARISTOR SURFACEH01C 7/10, H01C 7/12, H01C 1/14, H01C 7/126, H01H 37/761, H01H 85/0241, H01H 85/04, H01H 85/10, H01H 85/36, H01H2037/762, H01H2085/0486Filed as Littelfuse, Inc.2025-08-22Jianhua Chen | pending |
| HIGH SOLDERING STRENGTH TERMINAL FOR SURGE PROTECTION DEVICEH01C 1/144, H01C 7/126, H02H 9/04, B23K 1/00, H01H 37/761, H01H2037/762, H01H2037/763, H01H2037/769, H02H 3/20Filed as Dongguan Littelfuse Electronics Company Limited2025-08-08DONGJIAN SONG | pending |
| PROTECTION DEVICE INCLUDING PTC AND THERMAL DEVICESH01C 7/02, H01C 1/08, H01C 1/1406, H01C 7/021, H01C 7/18, H01H 85/048, H02H 9/026, H05B 3/12, H05B 3/20, H05B2203/002, H05B2203/01Filed as Littelfuse, Inc.2025-07-24Tao Guo | pending |
| High-Temperature Ni-Barrier Sintering PasteH01B 1/22, H01C 7/102, H01C 17/285, B23K 35/025, B23K 35/3006, C09D 11/52, H01C 1/142, H01G 4/008, H05K 1/095, H05K2201/0209, H05K2201/09263Filed as Dongguan Littelfuse Electronics Company Limited2025-07-21Hossein Talebinezhad | pending |
| CORNER STRESS REDUCTION IN SEMICONDUCTOR ASSEMBLIESH10W 90/00, H10W 90/766, H10W 70/456, H10W 20/40, H10W 90/732, H10W 72/631, H10W 72/886, H10W 70/417, H10W 90/811, H10W 40/641, H10W 72/60, H10W 90/20, H10W 72/381, H10W 90/22, H10W 72/347, H10W 72/30, H10W 42/121, H10W 90/736Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-07-03Rhodri Hughes | pending |
| DISCRETE SEMICONDUCTOR DEVICE PACKAGE WITH INTEGRATED TEMPERATURE SENSORH10W 40/00, H10W 90/00, H10D 80/231, H10D 80/251, H10W 70/465, H10W 72/886, H10W 90/811, H10W 40/641, H10W 90/762, H10W 72/60, H10P 74/27, H10W 90/756, H10W 70/481, H10W 70/411, H10W 70/464, H10W 90/766, H10W 74/111, H10W 70/466Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-06-13Francois Perraud | pending |
| DIRECTED ACTIVATION REED SENSORG01R 33/0058, H01H 36/0006, G01R 33/0047, H01H 3/161, H01H 36/0013, H01H 36/0033, H01H 36/0046, H01H 36/008Filed as Dongguan Littelfuse Electronics Company Limited2025-06-09Jowell Xiao | pending |
| MOLDED FILLER PAD FOR FUSE DEVICESH01H 85/43, H01H 69/02, H01H 85/0086, H01H 85/165, H01H 85/1755, H01H 85/18, H01H 85/25, H01H 85/38, H01H2085/388Filed as Littelfuse, Inc.2025-05-27Juliana Temple | pending |
| THERMAL STABLE PPTC MATERIAL AND MANUFACTURING METHOD THEREOFC08K 3/04, H01C 7/02, H01C 7/027, C01P2006/40, C08K 9/00, C08K2201/001, C08K2201/005, C08K2201/011, C09C 1/565Filed as Dongguan Littelfuse Electronics Company Limited2025-05-08Jianhua Chen | pending |
| Vent Seal for Extreme Environment ApplicationsH05K 5/0214, H05K 5/068, H05K 5/069, H05K 5/03, H05K 5/061Filed as Suzhou Littelfuse OVS Co., Ltd.2025-04-28Yuanxue Li | pending |
| DIRECT LIQUID COOLING OF SEMICONDUCTOR DEVICESH10W 40/47, H10W 40/25, H10W 90/00, H10W 72/60, H10W 70/658, H10W 40/22Filed as Littelfuse, Inc.2025-04-28Martin Schulz | pending |
| SNAP-ON CURRENT SENSOR DESIGNG01R 1/04, G01R 15/20, G01R 15/202, G01R 15/207, G01R 19/0092, G01R 33/0047, G01R 33/072, G01R 33/091, G01R 33/096, G01R 33/098Filed as Suzhou Littelfuse OVS Co., Ltd.2025-04-25Engelbert Hetzmannseder | pending |
| THREE-DIMENSIONAL ELECTRODES FOR REFLOWABLE PTC DEVICEH01C 1/1406, H01C 7/02, H01C 1/034, H01C 1/14, H01C 1/144, H01C 7/021, H01C 7/18Filed as Littelfuse, Inc.2025-04-22ChiHao Ku | pending |
| SPARE FUSE CLIPH01H 85/20, H01H 85/2045, H01H 85/22, H01H 85/0208, H01H 85/203, H01H 85/26, H01H 85/263, H01H2085/2065Filed as Suzhou Littelfuse OVS Co., Ltd.2025-04-11Renan Liu | pending |
| UNIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSOR DEVICE WITH LOW CLAMPING VOLTAGEH10D 8/021, H10D 89/611, H10D 89/60, H02H 9/04, H10D 8/80, H10D 8/041, H10D 89/713, H10D 8/411, H10D 62/124, H10D 8/422, H10D 89/711, H10W 90/00, H02H 9/005, H02H 9/044Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-03-27Jifeng Zhou | pending |
| UNIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSOR DEVICE WITH LOW CLAMPING VOLTAGEH10D 8/20, H10D 89/611, H10D 8/045, H10D 8/041, H10D 8/021, H10D 89/713, H10D 8/411, H10D 62/124, H10D 62/83Filed as Littelfuse Semiconductor (Wuxi) Co., Ltd.2025-03-14Glenda Zhang | pending |
| FUSE HOLDERH01H 85/20, H01H 85/2045, H02B 1/04, H01H 85/0017, H01H 85/202, H01H 85/204, H01H 85/22, H01H2085/2055, H02B 1/20Filed as Suzhou Littelfuse OVS Co., Ltd.2025-03-11Shangchun Pan | pending |
| PROTECTION AND SENSING SYSTEMS AND METHODSG01R 19/00, H02H 3/00, H02H 3/087, H02H 7/18, G01R 31/52, H02J 7/64, H02J 7/62, H02J 7/663, H02J 7/80, H02J 7/65, B60L 3/0046, B60L 3/0069, B60L2270/20, G01K 13/00, G01R 19/165, H02H 3/08, H02H 3/10, H02H 3/20, H02H 3/202, H02H 5/041, H02H 5/047, H02H 7/08, H02H 7/12Filed as Littelfuse, Inc.2025-03-07Boris Golubovic | pending |
| ENAMEL COATED FUSIBLE ELEMENTH01H 85/06, H01H 85/08, H01H 85/17, H01B 1/02, H01B 3/302, H01B 3/306, H01B 3/421, H01H 85/041, H01H 85/0418, H01H 85/0458, H01H 85/157, H01H 85/20, H01H 85/202Filed as Littelfuse, Inc.2025-01-30Marko Arciaga | pending |
| MULTI-CHANNEL TRIGGER SENSOR FOR PYROTECHNIC FUSESB60L 3/04, H02H 3/08, H02H 3/093, B60L 3/0084, B60L 3/12, B60R 16/02, G01R 19/16571, G07C 5/0808, H01H 85/0241, H01H 85/05, H01H 85/205, H01H2085/208, H02H 1/00, H02H 1/0007, H02H 1/04, H02H 3/006, H02H 3/021, H02H 3/04, H02H 3/042, H02H 3/05, H02H 3/087, H02H 3/10Filed as Littelfuse, Inc.2025-01-22Engelbert Hetzmannseder | pending |
| SMALL PACKAGE PTC DEVICEH01C 1/1406, H01C 7/02, H01C 1/14, H01C 1/142, H01C 1/148, H01C 7/027Filed as Dongguan Littelfuse Electronics Company Limited2025-01-14Jianhua Chen | pending |
| ELECTRICAL CONTACTORH01H 50/02, H01H 50/44, H01H 50/546, H01H 1/54, H01H 50/54Filed as Suzhou Littelfuse OVS Co., Ltd.2024-12-03Jianye Shi | pending |
| POWER SEMICONDUCTOR MODULE HAVING TRAPEZOIDAL SUBSTRATEFiled as LITTELFUSE, INC.2024-12-03YONG AI ONG | pending |
| PRESS PACK POWER SEMICONDUCTOR DEVICE WITH LOCATOR STRIPFiled as LITTELFUSE, INC.2024-12-03THOMAS SPANN | pending |
| PPTC DEVICE INCLUDING MULTILAYER ELECTRODESH01C 1/1406, H01C 7/021, H01C 7/028, H01C 1/144, H01C 7/02, H01C 7/027, H01C 7/18, H01C 17/28Filed as Littelfuse, Inc.2024-11-21Nina Liu | pending |
| RAPID REACTION PTC CIRCUIT PROTECTION DEVICEH01C 7/021, H01C 7/028, H02H 9/026, H01C 1/1406, H01C 7/02, H01C 7/027, H01C 7/18Filed as Littelfuse, Inc.2024-11-21Yu Tian | pending |
| POWER DISTRIBUTION MODULE, HOUSING THEREOF AND ASSEMBLY FOR HOUSING ONE OR MORE ELECTRICAL COMPONENTSH02B 1/063, H02B 1/48, H02B 1/28, B60R 16/0238, H02G 3/088, H02B 1/26Filed as Suzhou Littelfuse OVS Co., Ltd.2024-11-21Shangchun Pan | pending |
| FUSE MODULEFiled as Littelfuse, Inc.2024-11-15Jonathan Hernandez | pending |
| PRESSFIT TERMINAL FOR ISOLATED POWER SEMICONDUCTOR DEVICESH10W 70/413, H10W 72/50, H10W 70/464, H10W 72/07331, H10W 70/465, H10W 70/041, H10W 90/811, H10W 90/00, H10W 70/047, H10W 70/468, H10W 70/658, H10W 74/014, H10W 70/481, H10W 70/68, H10W 70/692, H10W 74/111, H10W 70/421, H10W 70/442, H10W 40/255, H10W 76/17, H10W 70/611Filed as Littelfuse, Inc.2024-11-13Tiburcio A. Maldo | pending |
| FUSE WITH CAST ARC SUPPRESSING MATERIALS FOR IMPROVED BREAKING CAPACITYH01H 85/38, H01H 85/10, H01H 85/18, H01H 85/42, H01H2085/383, H01H2085/388, H01H 85/055Filed as Littelfuse, Inc.2024-11-07Oluwaseun Oyewole | pending |
| ARC QUENCHING AND FLAME RETARDING COATING FOR ELECTRONIC DEVICESH01C 7/12, H01C 7/126, C08K 3/016, C08K 3/38, C08K 5/21, C08K 5/31, C08K 5/3445, C08K 5/3465, C08K 5/34922, C08L 83/04, C09D 183/04, H01C 1/14, H01C 7/02, H01C 7/102, H01C 17/06, H01H 9/302, H01H 37/761, H01H 85/0065, H01H 85/055, H01H 85/38, H01H2037/762, H01H2085/388, C08K 5/3492Filed as Littelfuse, Inc.2024-10-30Jianhua Chen | pending |
| SYSTEMS AND METHODS FOR IDENTIFYING A LOCATION OF A THERMAL EVENT DETECTED BY A TEMPERATURE SENSING TAPEFiled as Littelfuse, Inc.2024-10-30Claran Martis | pending |
| CHIP FUSE WITH FLOATING LEADSH01H 85/055, H01H 85/0241, H01H 85/143Filed as Littelfuse, Inc.2024-10-29Maria Lily Espenilla Rosios | pending |
| HIGH-VOLTAGE POWER DISTRIBUTION UNITH02B 1/46, B60R 16/0238, H05K 5/0208, H05K 5/0247, H05K 7/026Filed as Suzhou Littelfuse OVS Co., Ltd.2024-10-29Vector Li | pending |
Filings are matched to the company by applicant name, so a subsidiary filing under its own name is only here if that name resolves to this company. The applicant is printed as filed, which makes a wrong match visible. A patent is not a product: most applications are never granted, and most grants are never built.
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