C14C 3/12
Using purified or modified vegetable tanning agents
Official title: using purified or modified vegetable tanning agents
C14C3/12 (Using purified or modified vegetable tanning agents) appears on 6 US grants and 10 published applications in this corpus.
Search patents in C14C- Granted patents
- 6
- Published applications
- 10
- Assignees
- 9
- Inventors
- 26
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 0 |
By publication year. 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
- Preparation method of plant biomass-based active tanning agent21 Apr 2026US 12,606,876 B2Sichuan University
- 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.
- Process for obtaining a tannin extract isolated from grapes, tannin extract obtained and uses thereof23 Apr 2024US 11,963,993 B2Universitat De Lleida
- Agent and method for tanning skins and pelts3 May 2016US 9,328,394 B2Mb-Holding GmbH & Co. KG
- Use Of Epoxidized Vegetable Oils As Tanning Agents2 Jan 2025US 2025/0003019 A1Workem S.R.L. Unipersonale
- Preparation method of plant biomass-based active tanning agent25 Jul 2024US 2024/0247326 A1Sichuan University
- Retanning and fatliquoring compositions comprising a hemp oil derivative14 Sep 2023US 2023/0287527 A1Unique-Co, Inc.
- 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.
- Process for obtaining a tannin extract isolated from grapes, tannin extract obtained and uses thereof23 Apr 2020US 2020/0121752 A1Universitat De Lleida
Most cited
By later US patents