C14C 9/04
Fixing tanning agents in the leather
C14C9/04 (Fixing tanning agents in the leather) appears on 10 US grants and 10 published applications in this corpus.
Search patents in C14C- Granted patents
- 10
- Published applications
- 10
- Assignees
- 14
- Inventors
- 33
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Use of epoxidized vegetable oils as tanning agents29 Sep 2026US 12,747,482 B2Workem S.R.L. Unipersonale
- Method for the antimicrobial protection of hides during the tanning process which includes a biocidal composition and a luminescent additive allowing the identification thereof11 Aug 2026US 12,703,887 B2Ancor TecnolóGica Canaria, S.L.
- Method for producing sustainable leather using by-products from parts of all varieties and species of the genus Persea plant including among them both the american species and the hass variety as well7 May 2024US 11,976,339 B2Curtidos Trevino, S.A. De C.V.
- Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor9 Jun 2020US 10,676,798 B2Shaanxi University of Science and Technology
- Leather or leather article and method for producing same, hexavalent chromium treatment agent, method for treating hexavalent chromium in crude leather or crude leather article23 Jul 2019US 10,358,686 B2Citizen Watch Co., Ltd.
- Method for the antimicrobial protection of hides during the tanning process which includes a biocidal composition and a luminescent additive allowing the identification thereof15 May 2025US 2025/0154613 A1Ancor TecnolóGica Canaria, S.L.
- Use Of Epoxidized Vegetable Oils As Tanning Agents2 Jan 2025US 2025/0003019 A1Workem S.R.L. Unipersonale
- Method of manufacturing leather7 Sep 2023US 2023/0279264 A1white
- Composition for manufacturing leather7 Sep 2023US 2023/0279515 A1white
- Method for producing sustainable leather using by-products from parts of all varieties and species of the genus persea plant including among them both the american species and the hass variety as well18 Aug 2022US 2022/0259683 A1Curtidos Trevino, S.A. De C.V.
Most cited
By later US patents
- Interpolymers of unsaturated carboxylic acids and unsaturated sulfur acids37US 6,207,780 B1Rohm and Haas Company · 2001
- Method for producing waterproof leather12US 4,755,187 AHenkel Kommanditgesellschaft auf Aktien · 1988
- Process for mineral tanning, re-tanning or leather after-treatment2US 5,725,599 AClariant Finance (BVI) Limited · 1998
- Leather or leather article and method for producing same, hexavalent chromium treatment agent, method for treating hexavalent chromium in crude leather or crude leather article1US 10,358,686 B2Citizen Watch Co., Ltd. · 2019
- Retanning and fatliquoring agent1US 4,074,968 ADiamond Shamrock Corporation · 1978