A61K 2800/5428
Amphoteric or zwitterionic
Official title: amphoteric or zwitterionic
A61K2800/5428 (Amphoteric or zwitterionic) appears on 136 US grants and 170 published applications in this corpus.
Search patents in A61K- Granted patents
- 136
- Published applications
- 170
- Assignees
- 59
- Inventors
- 450
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 3 |
| 2003 | 4 | 9 |
| 2004 | 3 | 11 |
| 2005 | 1 | 8 |
| 2006 | 2 | 10 |
| 2007 | 3 | 6 |
| 2008 | 2 | 6 |
| 2009 | 1 | 7 |
| 2010 | 4 | 6 |
| 2011 | 3 | 6 |
| 2012 | 5 | 2 |
| 2013 | 1 | 0 |
| 2014 | 4 | 1 |
| 2015 | 3 | 7 |
| 2016 | 2 | 9 |
| 2017 | 4 | 8 |
| 2018 | 7 | 9 |
| 2019 | 7 | 6 |
| 2020 | 4 | 9 |
| 2021 | 5 | 7 |
| 2022 | 5 | 8 |
| 2023 | 6 | 6 |
| 2024 | 2 | 10 |
| 2025 | 3 | 6 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hyaluronate skin-penetrating cosmetic7 Jul 2026US 12,673,018 B2Shiseido Company, Ltd.
- Enhanced deposition compositions for personal care actives30 Jun 2026US 12,667,532 B2Lubrizol Advanced Materials, Inc.
- Composition comprising hyaluronic acid-based polyion complex particle28 Oct 2025US 12,453,691 B2L'oreal
- Cleansing composition2 Sep 2025US 12,403,084 B2Conopco, Inc.
- Cosmetic composition5 Aug 2025US 12,377,038 B2Kao Corporation
- Mild lamellar wash composition having reduced isethionate and palm kernel oil derived structurant17 Sep 2026US 2026/0272804 A1Conopco, Inc., d/b/a UNILEVER
- Composition comprising hyaluronic acid-based polyion complex and hydrophilic or lipophilic antioxidant23 Jul 2026US 2026/0207441 A1L'oreal
- Hair treatment compositions and methods11 Jun 2026US 2026/0157953 A1Conopco, Inc., d/b/a UNILEVER
- Personal Care Compositions23 Apr 2026US 2026/0108440 A1Colgate-Palmolive Company
- Personal Care Compositions23 Apr 2026US 2026/0108443 A1Colgate-Palmolive Company
Most cited
By later US patents
- Cosmetic composition for treating keratin fibres, and process for treating the latter231US 5,089,252 AL'oreal · 1992
- Thickened or gelled composition for conditioning hair164US 4,591,610 AL'oreal · 1986
- Composition for the treatment of keratin fibers, based on amphoteric polymer and cationic polymer155US 4,996,059 AL'oreal · 1991
- Synergistic combination of cationic and ampholytic polymers for cleansing and/or conditioning keratin based substrates98US 6,110,451 ACalgon Corporation · 2000
- Hydrophilic ampholytic polymer98US 6,361,768 B1PMD Holdings Corp. · 2002