H01H
Electric switches
Official title: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)
H01H (Electric switches) appears on 49,044 US grants and 33,588 published applications in this corpus.
Search patents in H01H- Granted patents
- 49,044
- Published applications
- 33,588
- Assignees
- 9,719
- Inventors
- 63,364
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 756 | 0 |
| 1977 | 780 | 0 |
| 1978 | 802 | 0 |
| 1979 | 548 | 0 |
| 1980 | 647 | 0 |
| 1981 | 770 | 0 |
| 1982 | 742 | 0 |
| 1983 | 663 | 0 |
| 1984 | 738 | 0 |
| 1985 | 817 | 0 |
| 1986 | 688 | 0 |
| 1987 | 882 | 0 |
| 1988 | 745 | 0 |
| 1989 | 814 | 0 |
| 1990 | 778 | 0 |
| 1991 | 732 | 0 |
| 1992 | 715 | 0 |
| 1993 | 741 | 0 |
| 1994 | 713 | 0 |
| 1995 | 643 | 0 |
| 1996 | 762 | 0 |
| 1997 | 750 | 0 |
| 1998 | 1061 | 0 |
| 1999 | 1095 | 0 |
| 2000 | 979 | 0 |
| 2001 | 968 | 321 |
| 2002 | 1014 | 958 |
| 2003 | 1087 | 1075 |
| 2004 | 1114 | 1163 |
| 2005 | 887 | 1205 |
| 2006 | 967 | 1179 |
| 2007 | 851 | 1231 |
| 2008 | 803 | 1298 |
| 2009 | 866 | 1349 |
| 2010 | 928 | 1329 |
| 2011 | 961 | 1223 |
| 2012 | 1163 | 1335 |
| 2013 | 1110 | 1567 |
| 2014 | 1203 | 1586 |
| 2015 | 1340 | 1625 |
| 2016 | 1439 | 1555 |
| 2017 | 1561 | 1527 |
| 2018 | 1533 | 1588 |
| 2019 | 1691 | 1550 |
| 2020 | 1495 | 1588 |
| 2021 | 1369 | 1280 |
| 2022 | 1273 | 1384 |
| 2023 | 1183 | 1324 |
| 2024 | 1186 | 1261 |
| 2025 | 1020 | 1175 |
| 2026 | 671 | 912 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- H01H 9/00Details of switching devices, not covered by groups h01h1/00 - h01h7/0010,167
- H01H 13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling8,507
- H01H 1/00Contacts6,769
- H01H 3/00Mechanisms for operating contacts6,649
- H01H 71/00Details of the protective switches or relays covered by groups h01h73/00 -4,981
- H01H 33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means4,343
- H01H 50/00Details of electromagnetic relays3,350
- H01H 85/00Protective devices in which the current flows through a part of fusible3,308
All 68 main groupsShow fewer
- H01H 2221/00ActuatorsIndexing code2,781
- H01H 2219/00LegendsIndexing code2,391
- H01H 2300/00Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protectiveIndexing code2,295
- H01H 35/00Switches operated by change of a physical condition2,267
- H01H 47/00Circuit arrangements not adapted to a particular application of the relay and2,199
- H01H 11/00Apparatus or processes specially adapted for the manufacture of electric switches2,128
- H01H 37/00Thermally-actuated switches1,991
- H01H 19/00Switches operated by an operating part which is rotatable about a longitudinal1,965
- H01H 2239/00MiscellaneousIndexing code1,733
- H01H 2223/00CasingsIndexing code1,707
- H01H 25/00Switches with compound movement of handle or other operating part1,478
- H01H 2231/00ApplicationsIndexing code1,466
- H01H 2215/00Tactile feedbackIndexing code1,444
- H01H 23/00Tumbler or rocker switches, i.e. switches characterised by being operated by rocking1,366
- H01H 83/00Protective switches1,362
- H01H 51/00Electromagnetic relays1,360
- H01H 2229/00ManufacturingIndexing code1,239
- H01H 21/00Switches operated by an operating part in the form of a pivotable1,149
- H01H 59/00Electrostatic relays1,124
- H01H 36/00Switches actuated by change of magnetic field or of electric field1,110
- H01H 2217/00Facilitation of operationIndexing code1,000
- H01H 73/00Protective overload circuit-breaking switches in which excess current opens the contacts by878
- H01H 15/00Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite873
- H01H 2227/00DimensionsIndexing code768
- H01H 2209/00LayersIndexing code725
- H01H 31/00Air-break switches for high tension without arc-extinguishing or arc-preventing means725
- H01H 2205/00Movable contactsIndexing code633
- H01H 2201/00ContactsIndexing code625
- H01H 2203/00Form of contactsIndexing code610
- H01H 2225/00Switch site locationIndexing code602
- H01H 2235/00SpringsIndexing code569
- H01H 61/00Electrothermal relays542
- H01H 89/00Combinations of two or more different basic types of electric switches, relays497
- H01H 69/00Apparatus or processes for the manufacture of emergency protective devices486
- H01H 27/00Switches operated by a removable member471
- H01H 2207/00ConnectionsIndexing code468
- H01H 39/00Switching devices actuated by an explosion produced within the device and initiated453
- H01H 77/00Protective overload circuit-breaking switches operated by excess current and requiring separate action451
- H01H 43/00Time or time-programme switches providing a choice of time-intervals for executing one444
- H01H 2233/00Key modulesIndexing code437
- H01H 5/00Snap-action arrangements, i.e. in which during a single opening operation or a407
- H01H 57/00Electrostrictive relays387
- H01H 29/00Switches having at least one liquid contact350
- H01H 2211/00SpacersIndexing code284
- H01H 2213/00VentingIndexing code262
- H01H 49/00Apparatus or processes specially adapted to the manufacture of relays or parts219
- H01H 2237/00Mechanism between key and laykeyIndexing code157
- H01H 45/00Details of relays119
- H01H 67/00Electrically-operated selector switches107
- H01H 79/00Protective switches in which excess current causes the closing of contacts100
- H01H 17/00Switches having flexible operating part adapted only for pulling83
- H01H 7/00Devices for introducing a predetermined time delay between the initiation of the82
- H01H 75/00Protective overload circuit-breaking switches in which excess current opens the contacts by68
- H01H 81/00Protective switches in which contacts are normally closed but are repeatedly opened60
- H01H 53/00Relays using the dynamo-electric effect, i.e. relays in which contacts are opened40
- H01H 55/00Magnetostrictive relays36
- H01H 63/00Details of electrically-operated selector switches26
- H01H 87/00Protective devices in which a current flowing through a liquid or solid24
- H01H 65/00Apparatus or processes specially adapted to the manufacture of selector switches or9
- H01H 41/00Switches providing a selected number of consecutive operations of the contacts by5
Recent patents
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- Systems and methods for a remote control actuator6 Oct 2026US 12,753,743 B2Trustees of Tufts College
- Dual-stage flashlight switch and flashlight6 Oct 2026US 12,753,912 B1
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- Push button6 Oct 2026US 12,754,584 B2Crouzet
- Oil Level Sensing and Fault Detection8 Oct 2026US 2026/0309537 A1Textron Aviation Inc.
- Electric testing systems8 Oct 2026US 2026/0309779 A1
- Capacitive rf microswitch for high-power applications8 Oct 2026US 2026/0311937 A1
- Switch pole for electrical systems8 Oct 2026US 2026/0311938 A1
- Switch pole for electrical systems8 Oct 2026US 2026/0311939 A1
Most cited
By later US patents
- Self-contained powered surgical apparatus3,063US 5,779,130 AUnited States Surgical Corporation · 1998
- Surgical robotic tools, data architecture, and use2,959US 6,331,181 B1Intuitive Surgical, Inc. · 2001
- Mechanical actuator interface system for robotic surgical tools2,625US 6,491,701 B2Intuitive Surgical, Inc. · 2002
- Mechanical actuator interface system for robotic surgical tools2,486US 7,524,320 B2Intuitive Surgical, Inc. · 2009
- Motor-driven surgical cutting instrument with electric actuator directional control assembly2,367US 8,220,688 B2Ethicon Endo-Surgery, Inc. · 2012