H01J 61/66
Having one or more specially shaped cathodes
Official title: having one or more specially shaped cathodes, e.g. for advertising purposes {alphanumeric}
H01J61/66 (Having one or more specially shaped cathodes) appears on 10 US grants and 1 published applications in this corpus.
Search patents in H01J- Granted patents
- 10
- Published applications
- 1
- Assignees
- 5
- Inventors
- 18
- Latest grant
- 11 Feb 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Discharge device having cathode with micro hollow array11 Feb 2003US 6,518,692 B2Old Dominion University
- Discharge device having cathode with micro hollow array12 Feb 2002US 6,346,770 B1Old Dominion University
- Discharge device having cathode with micro hollow array6 Jun 2000US 6,072,273 AOld Dominion University
- Discharge device having cathode with micro hollow array17 Aug 1999US 5,939,829 AOsram Sylvania Inc.
- Discharge device having cathode with micro hollow array11 Nov 1997US 5,686,789 AOsram Sylvania Inc.
Most cited
By later US patents
- Discharge device having cathode with micro hollow array70US 5,686,789 AOsram Sylvania Inc. · 1997
- Discharge device having cathode with micro hollow array60US 5,939,829 AOsram Sylvania Inc. · 1999
- Discharge device having cathode with micro hollow array27US 6,346,770 B1Old Dominion University · 2002
- Discharge device having cathode with micro hollow array26US 6,072,273 AOld Dominion University · 2000
- Low voltage gas discharge device23US 4,990,826 A1991