H01K
Electric incandescent lamps
Official title: ELECTRIC INCANDESCENT LAMPS (details, apparatus or processes for manufacture applicable to both discharge devices and incandescent lamps H01J; light sources using a combination of incandescent and other types of light generation H01J61/96, H05B35/00)
H01K (Electric incandescent lamps) appears on 1,740 US grants and 962 published applications in this corpus.
Search patents in H01K- Granted patents
- 1,740
- Published applications
- 962
- Assignees
- 468
- Inventors
- 2,704
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 42 | 0 |
| 1977 | 49 | 0 |
| 1978 | 38 | 0 |
| 1979 | 37 | 0 |
| 1980 | 32 | 0 |
| 1981 | 39 | 0 |
| 1982 | 31 | 0 |
| 1983 | 34 | 0 |
| 1984 | 40 | 0 |
| 1985 | 40 | 0 |
| 1986 | 53 | 0 |
| 1987 | 45 | 0 |
| 1988 | 45 | 0 |
| 1989 | 47 | 0 |
| 1990 | 45 | 0 |
| 1991 | 50 | 0 |
| 1992 | 44 | 0 |
| 1993 | 29 | 0 |
| 1994 | 19 | 0 |
| 1995 | 37 | 0 |
| 1996 | 33 | 0 |
| 1997 | 21 | 0 |
| 1998 | 32 | 0 |
| 1999 | 53 | 0 |
| 2000 | 41 | 0 |
| 2001 | 42 | 12 |
| 2002 | 41 | 41 |
| 2003 | 62 | 68 |
| 2004 | 55 | 64 |
| 2005 | 40 | 71 |
| 2006 | 37 | 87 |
| 2007 | 34 | 59 |
| 2008 | 37 | 73 |
| 2009 | 31 | 50 |
| 2010 | 48 | 70 |
| 2011 | 25 | 48 |
| 2012 | 36 | 35 |
| 2013 | 34 | 33 |
| 2014 | 35 | 37 |
| 2015 | 22 | 29 |
| 2016 | 25 | 29 |
| 2017 | 19 | 22 |
| 2018 | 24 | 19 |
| 2019 | 26 | 29 |
| 2020 | 24 | 18 |
| 2021 | 20 | 24 |
| 2022 | 15 | 11 |
| 2023 | 11 | 12 |
| 2024 | 12 | 10 |
| 2025 | 9 | 7 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- H01K 1/00Details1,420
- H01K 3/00Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of398
- H01K 7/00Lamps for purposes other than general lighting161
- H01K 9/00Lamps having two or more incandescent bodies separately heated130
- H01K 5/00Lamps for general lighting48
- H01K 13/00Lamps having an incandescent body which is substantially non-conductive until heated16
- H01K 11/00Lamps having an incandescent body which is not conductively heated7
Recent patents
- Active cooling of quartz enveloped heaters in vacuum4 Nov 2025US 12,464,605 B2APPLIED Materials.Inc.
- Optimized infrared light source for a gas sensor, and manufacturing method thereof29 Jul 2025US 12,372,457 B2Elichens
- Kinetic flame device15 Jul 2025US 12,359,784 B2L&L Candle Company, LLC
- Light bulb27 May 2025US 12,315,715 B1
- Control method for multi-zone active-matrix temperature control in plasma processing apparatus20 May 2025US 12,309,891 B2Advanced Micro-Fabrication Equipment Inc. China
- Adapter and kit for joining a tool to a threaded pole1 Oct 2026US 2026/0302155 A1EZ Smart Co.
- Powering and illuminating a tire of a vehicle2 Apr 2026US 2026/0091623 A1Ford Global Technologies, LLC
- Ultraviolet cathodluminescent systems and methods26 Feb 2026US 2026/0059622 A1NS Nanotech, Inc.
- Kinetic flame device12 Feb 2026US 2026/0043529 A1L&L Candle Company, LLC
- Halogen lamp18 Dec 2025US 2025/0383070 A1RarEarth Tech Co., Ltd.
Most cited
By later US patents
- Inductively powered lamp assembly370US 6,731,071 B2Access Business Group International LLC · 2004
- Inductively powered lamp assembly317US 6,917,163 B2Access Business Group International LLC · 2005
- Inductively powered lamp assembly315US 6,812,645 B2Access Business Group International LLC · 2004
- Method of manufacturing a lamp assembly279US 6,831,417 B2Access Business Group International LLC · 2004
- Inductively powered secondary assembly251US 7,474,058 B2Access Business Group International LLC · 2009