G03B 21/001
Slide projectors
Official title: {Slide projectors}
G03B21/001 (Slide projectors) appears on 155 US grants and 125 published applications in this corpus.
Search patents in G03B- Granted patents
- 155
- Published applications
- 125
- Assignees
- 98
- Inventors
- 286
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 3 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 5 |
| 2013 | 3 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 3 |
| 2016 | 5 | 6 |
| 2017 | 6 | 9 |
| 2018 | 10 | 13 |
| 2019 | 14 | 15 |
| 2020 | 9 | 11 |
| 2021 | 14 | 17 |
| 2022 | 13 | 4 |
| 2023 | 13 | 7 |
| 2024 | 4 | 9 |
| 2025 | 10 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Film disc for story projector16 Jun 2026US 12,656,667 B1Shenzhen Bolong Technology Co. Ltd.
- Plug-in film structure and projection lamp thereof19 May 2026US 12,631,947 B2
- Story projector6 Jan 2026US 12,517,421 B2Shenzhen Bolong Technology Co. Ltd.
- Micro-lens array projection device, lighting device and vehicle16 Dec 2025US 12,498,623 B2Mercedes-Benz Group AG
- Laser projector lamp with multiple projection effects25 Nov 2025US 12,481,206 B2Zhongshan Bolang Electronic Technology Co., Ltd.
- Optical device for projecting a pattern onto a surface10 Sep 2026US 2026/0266589 A1Carl Zeiss AG
- Systems and methods for image projection6 Aug 2026US 2026/0227638 A1Tape Art LLC
- System and method for generating an image using a natural projection medium30 Jul 2026US 2026/0219564 A1Disney Enterprises, Inc.
- Doorbell communication systems and methods16 Apr 2026US 2026/0105817 A1SkyBell Technologies IP, LLC
- Novel Plug-in Film Structure and Projection Lamp Thereof12 Mar 2026US 2026/0072334 A1
Most cited
By later US patents
- Single crystal silicon arrayed devices for projection displays88US 5,581,385 AKopin Corporation · 1996
- Flashlight producing uniform high brightness77US 6,746,124 B22004
- A slide assembly for projector with active matrix moveably mounted to housing51US 5,317,436 AKopin Corporation · 1994
- Projector stacking stand39US 4,148,453 A1979
- Remote control circuit34US 4,375,106 A1983