G02B 6/3532
The optical element being a wavelength independent filter or having spatially dependent
Official title: {the optical element being a wavelength independent filter or having spatially dependent transmission properties, e.g. neutral filter or neutral density wedge substrate with plurality of density filters}
G02B6/3532 (The optical element being a wavelength independent filter or having spatially dependent) appears on 49 US grants and 21 published applications in this corpus.
Search patents in G02B- Granted patents
- 49
- Published applications
- 21
- Assignees
- 45
- Inventors
- 117
- Latest grant
- 11 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 5 |
| 2003 | 6 | 4 |
| 2004 | 1 | 1 |
| 2005 | 4 | 2 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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Most cited
By later US patents
- Voltage controlled attenuator88US 5,745,634 AJDS Fitel Inc. · 1998
- Method and apparatus for controlling light62US 6,296,383 B1Dicon A/S · 2001
- Optical communication, switching and control apparatus and systems and modular electro-optical logic circuits, and applications thereof53US 4,023,887 AGeneral Optimation, Inc. · 1977
- Optical fiber coupler with attenuator40US 5,226,104 AKaptron, Inc. · 1993
- Ellipsoidal optical coupling device36US 4,422,714 ACables Cortaillod S.A. · 1983