G03B 21/2086
Security or safety means in lamp houses
Official title: {Security or safety means in lamp houses}
G03B21/2086 (Security or safety means in lamp houses) appears on 131 US grants and 168 published applications in this corpus.
Search patents in G03B- Granted patents
- 131
- Published applications
- 168
- Assignees
- 68
- Inventors
- 315
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 3 | 3 |
| 2005 | 1 | 5 |
| 2006 | 3 | 12 |
| 2007 | 3 | 7 |
| 2008 | 5 | 15 |
| 2009 | 8 | 8 |
| 2010 | 8 | 5 |
| 2011 | 6 | 7 |
| 2012 | 5 | 10 |
| 2013 | 6 | 16 |
| 2014 | 6 | 13 |
| 2015 | 21 | 16 |
| 2016 | 8 | 7 |
| 2017 | 6 | 7 |
| 2018 | 9 | 3 |
| 2019 | 8 | 11 |
| 2020 | 6 | 6 |
| 2021 | 5 | 1 |
| 2022 | 1 | 4 |
| 2023 | 3 | 2 |
| 2024 | 1 | 3 |
| 2025 | 0 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Illumination device, method of controlling illumination device, and projection display apparatus25 Aug 2026US 12,717,223 B2Sony Group Corporation
- Light source device and image projection device having a light source device24 Mar 2026US 12,587,621 B2Barco N.V.
- Lighting device and projector device27 Jan 2026US 12,537,922 B2Sony Group Corporation
- Projection device31 Dec 2024US 12,181,714 B2Delta Electronics, Inc.
- Optical fiber mounting mechanism and projection device having the same5 Dec 2023US 11,835,771 B2Delta Electronics, Inc.
- Light source device and image projection device having a light source device9 Jul 2026US 2026/0197428 A1Barco N.V.
- Projection display device27 Nov 2025US 2025/0362578 A1Sharp NEC Display Solutions, Ltd.
- Cooling structure for light source device and projector5 Jun 2025US 2025/0180977 A1Sharp NEC Display Solutions, Ltd.
- Projection device20 Mar 2025US 2025/0093587 A1Delta Electronics, Inc.
- Projection device and safety protection method of projection device27 Jun 2024US 2024/0215133 A1Coretronic Corporation
Most cited
By later US patents
- Projector and the protector thereof32US 6,460,999 B1Sony Corporation · 2002
- Image projection method and image projector32US 6,575,581 B2Sony Corporation · 2003
- Protection lamp safety interconnect apparatus and method27US 5,855,488 AIn Focus Systems, Inc. · 1999
- Light source and projector25US 6,902,275 B2Seiko Epson Corporation · 2005
- Light source apparatus21US 6,227,686 B1Mitsubishi Denki Kabushiki Kaisha · 2001