Class C14C : CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
Subclass 3/16: Tanning; Compositions for tanning Chemical tanning by organic agents using aliphatic aldehydes
| 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.; |
| 12129524 | Chrome-free tanning process of ecological leather | May 11, 22 | Oct 29, 24 | Sichuan University |
| 11473156 | Chrome-free leather retanning | Dec 18, 15 | Oct 18, 22 | Rohm and Haas Company |
| 11041219 | Methods for tanning animal skins | Jul 13, 16 | Jun 22, 21 | Not available |
| 10815542 | Tanning composition and method based on an acetal of an aldehydic tanning agent | May 13, 19 | Oct 27, 20 | TFL Ledertechnik GmbH |
| 10604813 | Tanning composition and method based on an acetal of an aldehydic tanning agent | Mar 29, 17 | Mar 31, 20 | TFL Ledertechnik GmbH |
| 10301691 | Method for treating an animal substrate | Oct 01, 15 | May 28, 19 | Xeros Limited |
| 10260115 | Leather production using waste liquids | Nov 09, 16 | Apr 16, 19 | Not available |
| 9970070 | Chrome-free leather retanning | Oct 15, 14 | May 15, 18 | Rohm and Haas Company |
| 5476516 | Anticalcification treatment for aldehyde-tanned biological tissue | Mar 13, 92 | Dec 19, 95 | ALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY |
| 5360453 | Process for pickling and pretanning raw hides | Jan 22, 93 | Nov 01, 94 | CIBA SPECIALTY CHEMICALS CORPORATION |
| RE31035 | Arrangement for preparing natural tissue for implantation | Jul 07, 78 | Sep 21, 82 | MEDTRONIC, INC. |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2021/0214,811 | METAL-FREE TANNING METHOD | Aug 28, 19 | Jul 15, 21 | Santori Pellami S.P.A |
| 2020/0291,493 | METHOD FOR TANNING AN ANIMAL SKIN WITH DIALDEHYDES | Aug 22, 18 | Sep 17, 20 | Not available |
| 2019/0309,379 | TANNING COMPOSITION AND METHOD BASED ON AN ACETAL OF AN ALDEHYDIC TANNING AGENT | May 13, 19 | Oct 10, 19 | TFL Ledertechnik GmbH |
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