A61K 8/91
Graft copolymers
Official title: Graft copolymers (A61K8/89 takes precedence)
A61K8/91 (Graft copolymers) appears on 219 US grants and 264 published applications in this corpus.
Search patents in A61K- Granted patents
- 219
- Published applications
- 264
- Assignees
- 112
- Inventors
- 677
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 7 | 0 |
| 2002 | 7 | 7 |
| 2003 | 7 | 14 |
| 2004 | 2 | 13 |
| 2005 | 4 | 12 |
| 2006 | 5 | 13 |
| 2007 | 3 | 7 |
| 2008 | 2 | 8 |
| 2009 | 2 | 7 |
| 2010 | 10 | 13 |
| 2011 | 5 | 12 |
| 2012 | 2 | 5 |
| 2013 | 5 | 14 |
| 2014 | 10 | 9 |
| 2015 | 6 | 13 |
| 2016 | 4 | 15 |
| 2017 | 15 | 15 |
| 2018 | 9 | 20 |
| 2019 | 11 | 14 |
| 2020 | 13 | 15 |
| 2021 | 13 | 9 |
| 2022 | 6 | 5 |
| 2023 | 8 | 8 |
| 2024 | 4 | 2 |
| 2025 | 5 | 8 |
| 2026 | 0 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water-in-oil-in-water type emulsion cosmetic composition and method for manufacturing thereof23 Dec 2025US 12,502,340 B2Kolmar Korea Co., Ltd.
- Hyaluronic acid-collagen copolymer compositions and medical applications thereof20 May 2025US 12,304,974 B2Shanghai Qisheng Biological Preparation Co., Ltd.
- Method for colouring hair including pretreatment18 Feb 2025US 12,226,515 B2Wella Operations US, LLC
- Suncare formulation11 Feb 2025US 12,220,479 B2Dow Global Technologies LLC
- Environmentally biodegradable microcapsules7 Jan 2025US 12,187,829 B2Trucapsol LLC
- Moisture curable silicone polyethyleneimine resin3 Sep 2026US 2026/0258201 A1
- Radically polymerizable polycaprolactone-modified silicone compound, novel silicone-polycaprolactone copolymer particles and cosmetic composition using same, and other uses23 Jul 2026US 2026/0207467 A1Dow Toray Co., Ltd.
- Cleaning agent composition2 Jul 2026US 2026/0183221 A1Kao Corporation
- Photocurable composition11 Jun 2026US 2026/0159623 A1Threebond Co., Ltd.
- Hair treatment agent, or fiber treatment agent for headwear products26 Mar 2026US 2026/0083660 A1Kao Corporation
Most cited
By later US patents
- Composition in the form of an aerosol foam, based on a cationic polymer and an anionic polymer164US 4,761,273 AL'oreal · 1988
- Personal care compositions containing thermoplastic elastomeric graft copolymers95US 6,165,455 AThe Procter & Gamble Company · 2000
- Heterocyclic quaternized nitrogen-containing cellulosic graft polymers81US 5,037,930 AGAF Chemicals Corporation · 1991
- Block and graft copolymers and methods relating thereto79US 6,486,213 B1University of Washington · 2002
- Composition including a dispersion of polymer particles in a non-aqueous medium78US 5,851,517 AL'oreal · 1998