G03B 21/02
Multiple-film apparatus
G03B21/02 (Multiple-film apparatus) appears on 27 US grants and 7 published applications in this corpus.
Search patents in G03B- Granted patents
- 27
- Published applications
- 7
- Assignees
- 15
- Inventors
- 54
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 2 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Film disc for story projector16 Jun 2026US 12,656,667 B1Shenzhen Bolong Technology Co. Ltd.
- Multi-projection system, image projection method and projector4 Apr 2023US 11,620,732 B2Sharp NEC Display Solutions, Ltd.
- Interactive data visualization environment22 Feb 2022US 11,258,945 B2Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Image processing apparatus and method for suppressing overlap blur and individual blur from projection images using an inverted filter19 Oct 2021US 11,151,698 B2Sony Corporation
- Rotary image projector23 Feb 2021US 10,928,715 B1Gemmy Industries Corporation
- Multi-projection system, image projection method and projector18 Jun 2020US 2020/0193568 A1NEC Display Solutions, Ltd.
- Image processing apparatus and method27 Feb 2020US 2020/0065943 A1Sony Corporation
- Interactive Data Visualization Environment5 Sep 2019US 2019/0273863 A1Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Dynamic film projector2 May 2019US 2019/0129284 A1Guangdong Yuhao Electronics Co., Ltd.
- Digital photo frame with natural light4 Nov 2010US 2010/0277667 A1Hon Hai Precision Industry Co., Ltd.
Most cited
By later US patents
- System for displaying images from multiple projectors onto a common screen60US 5,902,030 A1999
- Cartridge auto changer37US 4,981,409 ACanon Kabushiki Kaisha · 1991
- Presentation scheduling in digital cinema system26US 6,829,033 B2QUALCOMM Incorporated · 2004
- Multi-screen projector25US 5,085,495 AHitachi, Ltd. · 1992
- Projection type televison screen mounting structure including an elastic material for holding a screen12US 5,548,350 AMatsushita Electric Industrial Co., Ltd. · 1996