Class C14C : CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
Subclass 3/12: Tanning; Compositions for tanning Chemical tanning by organic agents Vegetable tanning using purified or modified vegetable tanning agents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11976339 | plant including among them both the american species and the hass variety as well | Jul 15, 20 | May 07, 24 | CURTIDOS TREVINO, S.A. DE C.V. |
| 11963993 | Process for obtaining a tannin extract isolated from grapes, tannin extract obtained and uses thereof | May 23, 17 | Apr 23, 24 | UNIVERSITAT DE LLEIDA |
| 9328394 | Agent and method for tanning skins and pelts | Nov 21, 08 | May 03, 16 | MB-HOLDING GMBH & CO. KG |
| 6133372 | Aqueous polymer dispersion, process for preparing the same and its use in leather production | Dec 23, 98 | Oct 17, 00 | STOCKHAUSEN GMBH |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0003,019 | Use Of Epoxidized Vegetable Oils As Tanning Agents | Oct 06, 22 | Jan 02, 25 | Not available |
| 2024/0247,326 | PREPARATION METHOD OF PLANT BIOMASS-BASED ACTIVE TANNING AGENT | Jun 01, 22 | Jul 25, 24 | Sichuan University |
| 2023/0287,527 | RETANNING AND FATLIQUORING COMPOSITIONS COMPRISING A HEMP OIL DERIVATIVE | Aug 04, 21 | Sep 14, 23 | UNIQUE S.R.L. |
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