C09K 23/28
Aminocarboxylic acids
Official title: Aminocarboxylic acids (proteins and protein hydrolysates C09K23/30)
C09K23/28 (Aminocarboxylic acids) appears on 36 US grants and 28 published applications in this corpus.
Search patents in C09K- Granted patents
- 36
- Published applications
- 28
- Assignees
- 31
- Inventors
- 112
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 3 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 2 |
| 2023 | 1 | 3 |
| 2024 | 0 | 4 |
| 2025 | 3 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Emulsifier for synthetic-based mud, process for preparation, and drilling method28 Oct 2025US 12,454,639 B2Schlumberger Technology Corporation
- Nanoparticle-surfactant stabilized foams23 Sep 2025US 12,421,442 B2Cnergreen Corp.
- Phytol-based surfactants and methods therefor14 Jan 2025US 12,195,662 B2Alliance for Sustainable Energy, LLC
- Amino acid surfactants24 Oct 2023US 11,795,143 B2AdvanSix Resins & Chemicals LLC
- Aqueous solution containing n-long-chain acyl acidic amino acid and/or salt thereof, and method for producing same22 Sep 2020US 10,780,167 B2Ajinomoto Co., Inc.
- Nanoparticle-surfactant stabilized foams25 Dec 2025US 2025/0388802 A1Cnergreen Corp.
- Amino acid surfactants14 Aug 2025US 2025/0257029 A1AdvanSix Resins & Chemicals LLC
- Uses, methods and compositions17 Jul 2025US 2025/0230361 A1Innospec Active Chemicals LLC
- Biobased surfactants utilizing co224 Oct 2024US 2024/0352318 A1
- Supramolecular amino acid or salt thereof, and preparation method therefor and application thereof3 Oct 2024US 2024/0325274 A1Suzhou Oulit Biopharm Co., Ltd
Most cited
By later US patents
- Polyaspartic acid and its salts for dispersing suspended solids42US 5,284,512 ADonlar Corporation · 1994
- Oil-water emulsifiers37US 6,264,961 B1Henkel Kommanditgesellschaft auf Aktien · 2001
- Aqueous micro-emulsions of organic substances15US 4,404,109 ASociete Nationale Elf Aquitaine (Production) · 1983
- Amphiphilic fluorine derivatives with telomeric structures14US 5,527,962 AAlliance Pharmaceutical Corp. · 1996
- Water-based pigmented inks14US 5,840,106 AMinnesota Mining and Manufacturing Company · 1998