G03B 21/32
Details specially adapted for motion-picture projection
Official title: Details specially adapted for motion-picture projection (with film moving continuously through the gate G03B41/02)
G03B21/32 (Details specially adapted for motion-picture projection) appears on 378 US grants and 147 published applications in this corpus.
Search patents in G03B- Granted patents
- 378
- Published applications
- 147
- Assignees
- 159
- Inventors
- 562
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 40 | 0 |
| 1977 | 25 | 0 |
| 1978 | 29 | 0 |
| 1979 | 12 | 0 |
| 1980 | 17 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 2 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 6 |
| 2003 | 5 | 8 |
| 2004 | 13 | 4 |
| 2005 | 7 | 13 |
| 2006 | 5 | 14 |
| 2007 | 5 | 7 |
| 2008 | 7 | 4 |
| 2009 | 1 | 8 |
| 2010 | 1 | 1 |
| 2011 | 5 | 8 |
| 2012 | 1 | 5 |
| 2013 | 7 | 4 |
| 2014 | 5 | 5 |
| 2015 | 3 | 4 |
| 2016 | 5 | 6 |
| 2017 | 3 | 7 |
| 2018 | 11 | 8 |
| 2019 | 12 | 6 |
| 2020 | 7 | 9 |
| 2021 | 9 | 10 |
| 2022 | 9 | 6 |
| 2023 | 4 | 1 |
| 2024 | 2 | 2 |
| 2025 | 0 | 0 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03B 21/43Driving mechanisms113
- G03B 21/321Holders for films83
- G03B 21/50Control devices operated by the film strip during the run24
- G03B 21/40Eliminating or reducing effect of flicker16
- G03B 21/34Change-over arrangements13
- G03B 21/42Preventing damage to film due to abnormal operation of projector8
- G03B 21/38Prolonged exhibition of single frame3
Recent patents
- Projection device23 Jun 2026US 12,663,699 B1
- Projector assembly5 May 2026US 12,619,139 B1
- Image projection method for virtual tour5 May 2026US 12,619,141 B2Cupola360 INC.
- Techniques to automatically verify object detection, classification, and depth for automated driving systems30 Apr 2024US 11,972,612 B2Fca US LLC
- Manufacturing method of wavelength-converting component9 Jan 2024US 11,865,575 B2Coretronic Corporation
- Image projection method for virtual tour10 Oct 2024US 2024/0337915 A1ASPEED Technology Inc.
- Information processing method, information processing device, and program22 Aug 2024US 2024/0283891 A1Nippon Telegraph and Telephone Corporation
- Projection device28 Dec 2023US 2023/0418145 A1Panasonic Intellectual Property Management Co., Ltd.
- Projection lamp for projecting a nebula and a starry sky1 Dec 2022US 2022/0381412 A1Xiamen Longstar Lighting Co., Ltd.
- Lamp projecting starry sky and nebula generation method thereof22 Sep 2022US 2022/0299858 A1Lonvis Technology (Shenzhen) Co., Ltd.
Most cited
By later US patents
- Precision fragrance dispenser apparatus107US 5,610,674 A1997
- System and method for Pulfrich Filter Spectacles85US 7,405,801 B22008
- Motion picture copy prevention, monitoring, and interactivity system73US 5,959,717 A1999
- Method for recording and identifying integrated circuit chips and the like68US 5,801,067 A1998
- Precision fragrance dispenser apparatus68US 5,898,475 A1999