C09B 29/0805
Free of acid groups
Official title: {free of acid groups}
C09B29/0805 (Free of acid groups) appears on 351 US grants and 137 published applications in this corpus.
Search patents in C09B- Granted patents
- 351
- Published applications
- 137
- Assignees
- 114
- Inventors
- 562
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 21 | 0 |
| 1978 | 15 | 0 |
| 1979 | 3 | 0 |
| 1980 | 11 | 0 |
| 1981 | 16 | 0 |
| 1982 | 12 | 0 |
| 1983 | 16 | 0 |
| 1984 | 13 | 0 |
| 1985 | 10 | 0 |
| 1986 | 6 | 0 |
| 1987 | 0 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 3 |
| 2003 | 7 | 4 |
| 2004 | 4 | 9 |
| 2005 | 2 | 3 |
| 2006 | 5 | 6 |
| 2007 | 3 | 5 |
| 2008 | 1 | 6 |
| 2009 | 3 | 4 |
| 2010 | 6 | 10 |
| 2011 | 8 | 11 |
| 2012 | 6 | 3 |
| 2013 | 8 | 6 |
| 2014 | 3 | 6 |
| 2015 | 8 | 18 |
| 2016 | 8 | 17 |
| 2017 | 9 | 6 |
| 2018 | 10 | 6 |
| 2019 | 5 | 2 |
| 2020 | 2 | 3 |
| 2021 | 1 | 1 |
| 2022 | 3 | 4 |
| 2023 | 1 | 3 |
| 2024 | 2 | 1 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Optical sheet and optical component14 Oct 2025US 12,442,954 B2Sumitomo Bakelite Co., Ltd.
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same26 Aug 2025US 12,398,326 B2LG Chem.Ltd.
- Heterocyclic red azo colorants for seed treatment applications29 Apr 2025US 12,286,412 B2Milliken & Company
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same10 Dec 2024US 12,163,084 B2LG Chem.Ltd.
- Composition, film, laminate, and display device7 May 2024US 11,976,233 B2Sumitomo Chemical Company, Limited
- Heterocyclic red azo colorants for seed treatment applications31 Oct 2024US 2024/0360090 A1Milliken & Company
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same9 Nov 2023US 2023/0357638 A1LG Chem.Ltd.
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same26 Oct 2023US 2023/0340331 A1LG Chem.Ltd.
- Optical sheet and optical component12 Jan 2023US 2023/0011467 A1Sumitomo Bakelite Co., Ltd.
- Heterocyclic red azo colorants for seed treatment applications29 Dec 2022US 2022/0411387 A1Milliken & Company
Most cited
By later US patents
- Fluorescent quenching detection reagents and methods83US 6,727,356 B1Epoch Pharmaceuticals, Inc. · 2004
- Method for producing lightfast disperse dyestuffs containing a build-in photostabilizer [molecule] compound55US 4,902,787 ANorth Carolina State University · 1990
- Dyeing composition for human hair containing an azo dye54US 4,886,517 AL'oreal · 1989
- Real-time linear detection probes: sensitive 5′-minor groove binder-containing probes for PCR analysis54US 7,205,105 B2Epoch Biosciences, Inc. · 2007
- Fluorescent quenching detection reagents and methods50US 6,790,945 B2Epoch Biosciences, Inc. · 2004