H01J 2229/8907
Image projection devices
H01J2229/8907 (Image projection devices) appears on 20 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 20
- Published applications
- 6
- Assignees
- 15
- Inventors
- 30
- Latest grant
- 21 Mar 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 0 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Projection type cathode ray tube device21 Mar 2006US 7,015,634 B2Hitachi Displays, Ltd.
- Projection type cathode ray tube having improved focus characteristics28 Feb 2006US 7,005,801 B2Hitachi Display, Ltd.
- CRT assembly of projection television6 Dec 2005US 6,972,808 B2Samsung Electronics Co., Ltd.
- Funnel-and-neck sealing body for projection tube6 Apr 2004US 6,717,347 B2Nippon Electric Glass Co., Ltd.
- Cathode ray tube coupler with grounding ribbs24 Feb 2004US 6,696,776 B2Sony Corporation
- Optical coupler for projection display23 Jun 2005US 2005/0134164 A13M Innovative Properties Company
- Projection type cathode ray tube having improved focus characteristics14 Apr 2005US 2005/0077832 A1Hitachi Display, Ltd.
- Funnel-and-neck sealing body for projection tube4 Mar 2004US 2004/0041512 A1Nippon Electric Glass Co., Ltd.
- Projection type cathode ray tube device8 Jan 2004US 2004/0004428 A1Hitachi Displays, Ltd.
- Cathode ray tube coupler with grounding ribbs3 Oct 2002US 2002/0140332 A1Sony Corporation
Most cited
By later US patents
- Projection cathode ray tube39US 5,126,626 AMitsubishi Denki Kabushiki Kaisha · 1992
- Image display system27US 4,391,495 AThe Austin Company · 1983
- Halo-reducing faceplate arrangement22US 4,633,131 ANorth American Philips Corporation · 1986
- Apparatus for displaying images wtih reduced coarseness13US 4,587,553 ASony Corporation · 1986
- Cathode ray tube device with improved color filtering system9US 4,617,490 ANorth American Philips Corporation · 1986