G03B 21/323
Cassettes
Official title: {Cassettes (G03B21/326, G03B21/328 take precedence; for containing light-sensitive material G03B17/265)}
G03B21/323 (Cassettes) appears on 33 US grants and 4 published applications in this corpus.
Search patents in G03B- Granted patents
- 33
- Published applications
- 4
- Assignees
- 21
- Inventors
- 44
- Latest grant
- 13 Nov 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Projection device for projecting images on a surface of the device13 Nov 2018US 10,126,637 B2Kan Wah Kan Sum
- Projection device for projecting images on a surface of the device17 Apr 2018US 9,946,141 B2Kan Wah Kan Sum
- Film cassette, rack and relief trolley for the film cassette, and method of handling the film cassette7 Oct 2008US 7,431,156 B2Carlsson Equipment AB
- Image projector forming scrolling image9 Mar 2004US 6,702,445 B1Mr. Christmas Incorporated
- Film transport apparatus3 Mar 1992US 5,092,535 ACanon Kabushiki Kaisha
- Projection device for projecting images on a surface of the device9 Aug 2018US 2018/0224729 A1Kan Wah Kan Sum
- Projection device for projecting images on a surface of the device26 Oct 2017US 2017/0307965 A1Kan Wah Kan Sum
- Integrated Interactive Drawing and Entertainment Projector15 Jan 2009US 2009/0015793 A1
- Film cassette, rack and relief trolley for the film cassette, and method of handling the film cassette2 Mar 2006US 2006/0043693 A1Carlsson Equipment AB
Most cited
By later US patents