G02B 23/20
Collapsible housings
Official title: Collapsible housings (G02B23/18 takes precedence)
G02B23/20 (Collapsible housings) appears on 41 US grants and 31 published applications in this corpus.
Search patents in G02B- Granted patents
- 41
- Published applications
- 31
- Assignees
- 19
- Inventors
- 71
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 4 | 5 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 5 |
| 2019 | 4 | 3 |
| 2020 | 3 | 1 |
| 2021 | 3 | 3 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 3-dimensional viewing device with stereoscopic affect and interchangeable image discs and components17 Jun 2025US 12,332,462 B2
- Large reflector inflatable space-based telescope16 Aug 2022US 11,414,217 B2Southwest Research Institute
- Mobile observatory19 Apr 2022US 11,306,864 B1
- Self-contained binocular sighting system28 Dec 2021US 11,209,639 B2
- Collapsible imaging systems having lens arrays25 May 2021US 11,016,268 B2Almalence Inc.
- Night vision apparatus and bridge mount therefor15 Jan 2026US 2026/0016681 A1
- 3-dimensional viewing device with stereoscopic affect and interchangeable image discs and components11 Nov 2021US 2021/0349330 A1
- Self-Contained Binocular Sighting System19 Aug 2021US 2021/0255450 A1
- Large Reflector Inflatable Space-Based Telescope15 Jul 2021US 2021/0214106 A1Southwest Research Institute
- Emergency vision system with hand-held enclosure9 Apr 2020US 2020/0110272 A1
Most cited
By later US patents
- Collapsible binocular instrument26US 4,013,341 A1977
- Automatic exposure control for endoscopic imaging24US 10,609,291 B2King's College London · 2020
- Binoculars with double hinge bridge and resilient biasing20US 4,087,153 AErnst Leitz G.m.b.H. · 1978
- Foldable binocular assembly18US 4,478,498 A1984
- Collapsible binocular and blank therefor17US 4,239,328 A1980