H01R 33/22
For screw type base
Official title: for screw type base, e.g. for lamp
H01R33/22 (For screw type base) appears on 332 US grants and 180 published applications in this corpus.
Search patents in H01R- Granted patents
- 332
- Published applications
- 180
- Assignees
- 125
- Inventors
- 399
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 11 | 0 |
| 1996 | 14 | 0 |
| 1997 | 16 | 0 |
| 1998 | 14 | 0 |
| 1999 | 14 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 2 |
| 2002 | 6 | 2 |
| 2003 | 4 | 7 |
| 2004 | 7 | 5 |
| 2005 | 5 | 9 |
| 2006 | 9 | 8 |
| 2007 | 9 | 9 |
| 2008 | 12 | 5 |
| 2009 | 3 | 8 |
| 2010 | 11 | 10 |
| 2011 | 6 | 6 |
| 2012 | 4 | 8 |
| 2013 | 3 | 5 |
| 2014 | 9 | 9 |
| 2015 | 5 | 10 |
| 2016 | 7 | 9 |
| 2017 | 15 | 10 |
| 2018 | 17 | 12 |
| 2019 | 16 | 11 |
| 2020 | 18 | 10 |
| 2021 | 6 | 5 |
| 2022 | 8 | 3 |
| 2023 | 7 | 11 |
| 2024 | 6 | 3 |
| 2025 | 7 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Extension lamp socket23 Jun 2026US 12,665,365 B2Rich Brand Industries Limited
- Power module with press-fit contacts9 Dec 2025US 12,494,418 B2Infineon Technologies AG
- Screw lamp cap and screw lamp socket19 Aug 2025US 12,394,952 B2Ningbo Well Electric Appliance Co., Ltd.
- Light bulb and power adapter combination having an Edison screw10 Jun 2025US 12,327,971 B2
- Light bulb27 May 2025US 12,315,715 B1
- Extension lamp socket10 Jul 2025US 2025/0226632 A1Rich Brand Industries Limited
- Method of forming connector with flange and shaft27 Mar 2025US 2025/0102002 A1Altria Client Services LLC
- Socket for a Light Bulb Inserted with Axial and/or Rotational Forces20 Mar 2025US 2025/0096513 A1Wintergreen Corporation
- Screw lamp cap and screw lamp socket2 May 2024US 2024/0146009 A1Ningbo Well Electric Appliance Co., Ltd.
- Non-welded and anti-deformation lamp base and non-welded and anti-deformation light bulb29 Feb 2024US 2024/0068645 A1Dongguan Huihuan Lighting Co., Ltd.
Most cited
By later US patents
- LED illumination apparatus and card-type LED illumination source287US 6,949,772 B2Matsushita Electric Industrial Co., Ltd. · 2005
- Card-type LED illumination source120US 7,259,403 B2Matsushita Electric Industrial Co., Ltd. · 2007
- LED illumination apparatus and card-type LED illumination source99US 7,375,381 B2Matsushita Electric Industrial Co., Ltd. · 2008
- T type quick-lock lampholder90US 6,758,578 B12004
- Interposer89US 7,121,891 B22006