H01J 29/81
Using shadow masks
Official title: using shadow masks
H01J29/81 (Using shadow masks) appears on 58 US grants and 10 published applications in this corpus.
Search patents in H01J- Granted patents
- 58
- Published applications
- 10
- Assignees
- 18
- Inventors
- 77
- Latest grant
- 30 Dec 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 2 |
| 2002 | 0 | 4 |
| 2003 | 2 | 0 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Shadow mask for a cathode ray tube with defined beam passages holes30 Dec 2008US 7,471,036 B2Samsung SDI.Co., Ltd.
- Methods to improve insulator performance for cathode-ray tube (CRT) applications2 May 2006US 7,037,160 B2Thomson Licensing
- Cathode-ray tube having a focus mask with improved insulator performance31 Aug 2004US 6,784,606 B2Thomson Licensing S. A.
- Tension focus mask for a cathode-ray tube (CRT)6 Jan 2004US 6,674,224 B2Thomson Licensing
- Slightly conducting insulators for cathode-ray tube (CRT) applications30 Sep 2003US 6,628,057 B2Thomson Licensing S. A.
- Shadow mask for cathode ray tube12 Oct 2006US 2006/0226755 A1Samsung SDI.Co., Ltd.
- Dynamic focus voltage for a focus mask11 Aug 2005US 2005/0174072 A1
- Methods to improve insulator performance for cathode-ray tube (CRT) applications25 Nov 2004US 2004/0235386 A1Thomson Licensing
- Insulator system for a CRT focus mask1 Jan 2004US 2004/0000855 A1
- Tension focus mask for a cathode-ray tube (CRT)12 Sep 2002US 2002/0125810 A1Thomson Licensing
Most cited
By later US patents
- Method of manufacturing a cathode ray tube for displaying colored pictures31US 4,160,311 AU. S. Philips Corporation · 1979
- Shadow mask each aperture of which is defined by a quadrupolar lens18US 4,059,781 AU. S. Philips Corporation · 1977
- Color television display tube and method of manufacturing same16US 4,121,131 AU. S. Philips Corporation · 1978
- Color selection means comprising lens electrodes spaced by grains of insulating material15US 4,107,569 AU. S. Philips Corporation · 1978
- Uniaxial tension focus mask for a color CRT with electrical connection means15US 5,646,478 AThomson Multimedia, S. A. · 1997