C09B 1/205
Dyes with an unsaturated c on the n atom attached to the
Official title: {Dyes with an unsaturated C on the N atom attached to the nucleus (C=O and C=S, C09B1/36)}
C09B1/205 (Dyes with an unsaturated c on the n atom attached to the) appears on 11 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 11
- Published applications
- 1
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 10 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Contact lens10 Dec 2024US 12,164,182 B2CooperVision International Limited
- Pleochroic dyes and electro-optical displays therewith27 Oct 1987US 4,702,561 AMinnesota Mining and Manufacturing Company
- Liquid crystals having pleochroic dyes6 Sep 1983US 4,402,854 ASiemens Aktiengesellschaft
- Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances21 Jun 1983US 4,389,215 ABayer Aktiengesellschaft
- Liquid crystals having pleochroic dyes14 Dec 1982US 4,363,743 ASiemens Aktiengesellschaft
Most cited
By later US patents
- Liquid crystals having pleochroic dyes41US 4,363,743 ASiemens Aktiengesellschaft · 1982
- Anthraquinone amino pleochroic dyes12US 4,154,746 AMinnesota Mining and Manufacturing Company · 1979
- Liquid crystals having pleochroic dyes10US 4,402,854 ASiemens Aktiengesellschaft · 1983
- Anthraquinone derivatives for pigmenting organic macromolecular substances9US 4,284,411 ABayer Aktiengesellschaft · 1981
- Pleochroic dyes and electro-optical displays therewith8US 4,702,561 AMinnesota Mining and Manufacturing Company · 1987