C14C 3/02
Chemical tanning
C14C3/02 (Chemical tanning) appears on 273 US grants and 213 published applications in this corpus.
Search patents in C14C- Granted patents
- 273
- Published applications
- 213
- Assignees
- 144
- Inventors
- 710
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 12 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 1 |
| 2004 | 3 | 12 |
| 2005 | 4 | 7 |
| 2006 | 6 | 15 |
| 2007 | 7 | 8 |
| 2008 | 2 | 7 |
| 2009 | 0 | 8 |
| 2010 | 3 | 9 |
| 2011 | 2 | 2 |
| 2012 | 2 | 8 |
| 2013 | 2 | 10 |
| 2014 | 12 | 7 |
| 2015 | 4 | 8 |
| 2016 | 5 | 9 |
| 2017 | 5 | 13 |
| 2018 | 6 | 6 |
| 2019 | 9 | 15 |
| 2020 | 12 | 11 |
| 2021 | 7 | 7 |
| 2022 | 8 | 14 |
| 2023 | 7 | 11 |
| 2024 | 9 | 13 |
| 2025 | 8 | 6 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Preparation method of plant biomass-based active tanning agent21 Apr 2026US 12,606,876 B2Sichuan University
- Methods for tanning animal skins with dialdehydes17 Mar 2026US 12,577,628 B2Db Patents Ltd.
- Process for tanning animal hide10 Feb 2026US 12,545,969 B2University of Lancaster
- Method for processing hides and fabrics30 Jul 2026US 2026/0218320 A1Renbertech S.R.L.
- Hide tanning process, method for preparing leather, and detanning process9 Apr 2026US 2026/0098311 A1AB Ctc
- 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.
- Hide sorting systems and methods14 Aug 2025US 2025/0257414 A1National Beef Packing Company, LLC
- 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.
Most cited
By later US patents
- Anticalcification treatment for aldehyde-tanned biological tissue77US 5,476,516 AAlbert Einstein College of Medicine of Yeshiva University · 1995
- Leather impregnated with temperature stabilizing material and method for producing such leather61US 6,179,879 B2Acushnet Company · 2001
- Graft copolymers of unsaturated monomers and polyhydroxy compounds, a process for their production and their use38US 5,760,154 AStockhausen GmbH & Co. KG · 1998
- Interpolymers of unsaturated carboxylic acids and unsaturated sulfur acids37US 6,207,780 B1Rohm and Haas Company · 2001
- Polyacrylic acid compositions for textile processing34US 5,212,272 APeach State Labs, Inc. · 1993