Class C14C : CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
Subclass 3/20: Tanning; Compositions for tanning Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12163197 | Method of manufacturing leather | Dec 24, 20 | Dec 10, 24 | Midori Auto Leather Co., Ltd.; TOYOTA JIDOSBA KABUSHIKI KAISHA.; |
| 10870896 | Solid, particulate tanning agent preparations | Mar 29, 12 | Dec 22, 20 | LANXESS Deutschland GmbH |
| 10087497 | Process for retanning leather | Jul 25, 14 | Oct 02, 18 | TFL Ledertechnik GmbH |
| 9970069 | Sulfonatocalixarene tanning agent for leather tanning and preparation method therefor | Jun 18, 15 | May 15, 18 | SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY |
| 9376729 | Compositions comprising at least one compound containing a carbamoyl sulfonate group and use of the same as tanning agents | Jul 28, 11 | Jun 28, 16 | LANXESS DEUTSCHLAND GMBH |
| 9212403 | Topcoat | May 15, 09 | Dec 15, 15 | HONDA MOTOR CO., LTD., MIDORI HOKUYO CO., LTD., |
| 8945610 | Condensation products based on bicyclic or polycyclic aromatics or heteroaromatics | Nov 11, 08 | Feb 03, 15 | BASF SE |
| 5256317 | Compositions for the treatment of leather and furs | Jul 02, 92 | Oct 26, 93 | CIBA SPECIALTY CHEMICALS CORPORATION |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0115,970 | LEATHER OR RETANNING COMPOUND WITH CYCLODEXTRIN BASED INCLUSION COMPOUND | Mar 21, 23 | Apr 10, 25 | Not available |
| 2025/0003,019 | Use Of Epoxidized Vegetable Oils As Tanning Agents | Oct 06, 22 | Jan 02, 25 | Not available |
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