C08F 222/02
Acids
Official title: Acids; Metal salts or ammonium salts thereof {, e.g. maleic acid or itaconic acid}
C08F222/02 (Acids) appears on 190 US grants and 198 published applications in this corpus.
Search patents in C08F- Granted patents
- 190
- Published applications
- 198
- Assignees
- 128
- Inventors
- 575
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 4 |
| 2003 | 1 | 6 |
| 2004 | 8 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 7 |
| 2007 | 1 | 4 |
| 2008 | 0 | 1 |
| 2009 | 0 | 11 |
| 2010 | 2 | 12 |
| 2011 | 6 | 4 |
| 2012 | 4 | 3 |
| 2013 | 8 | 8 |
| 2014 | 6 | 8 |
| 2015 | 6 | 15 |
| 2016 | 6 | 13 |
| 2017 | 12 | 16 |
| 2018 | 9 | 9 |
| 2019 | 7 | 8 |
| 2020 | 12 | 15 |
| 2021 | 7 | 13 |
| 2022 | 16 | 10 |
| 2023 | 7 | 8 |
| 2024 | 10 | 8 |
| 2025 | 3 | 6 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Copolymerized superabsorbent polymers28 Jul 2026US 12,692,334 B2Kimberly-Clark Worldwide, Inc.
- Coating for medical devices14 Apr 2026US 12,599,707 B2Smart Reactors Service Limited
- Latex for adhesive composition and adhesive composition15 Jul 2025US 12,359,051 B2Resonac Corporation
- Synthetic polymers and crosslinked hydrogel systems1 Jul 2025US 12,344,687 B2McMaster University
- Nitrapyrin compositions for enhancing nitrogen nutrient use efficiency and improving plant growth14 Jan 2025US 12,195,410 B2Verdesian Life Sciences U.S., LLC
- Novel copolymers; process for preparing same; cosmetic use thereof; cosmetic formulations comprising same9 Jul 2026US 2026/0193396 A1Societe D' Exploitation De Produits Pour Les Industries Chimiques Seppic
- Hydrophilic compounds and fabrics25 Jun 2026US 2026/0176399 A1Industrial Technology Research Institute
- Novel bio-based terpolymer and preparation method and use thereof30 Apr 2026US 2026/0117011 A1All-Plus Chemical Co., Ltd.
- Grafted polymer of mono-unsaturated polycarboxylic acid as dyeing auxiliary or as re-tanning agent for leather9 Apr 2026US 2026/0098312 A1Stahl International B.V.
- Method of Synthesizing Olefin Functional Polymer in Continuous Feeding Manner and Use of the Olefin Functional Polymer29 Jan 2026US 2026/0028435 A1Jiangsu Yangnong Chemical Group Co., Ltd
Most cited
By later US patents
- Water thickening agents consisting of copolymers of crosslinked acrylic acids and esters386US 4,509,949 AThe B. F. Goodrich Company · 1985
- Aqueous compositions145US 6,299,936 B1BASF SE · 2001
- Alkyl, poly(oxyethylene) poly(carbonyloxyethylene) acrylate emulsion copolymers for thickening purposes92US 4,421,902 ARohm and Haas Company · 1983
- Biodegradable copolymers, methods of producing them and their use63US 5,830,956 AChemische Fabrik Stockhausen GmbH · 1998
- Process for producing acid-type maleic acid polymer and water-treating agent and detergent additive containing said polymer60US 5,135,677 ANippon Shokubai Co., Ltd. · 1992