| Patents for C14C 1 - Treating skins or hides with chemicals, enzymes or micro-organisms prior to tanning (1,091) |
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| 07/08/1987 | EP0228117A1 Procedure for removing the layer of hairy elements from a complete animal skin |
| 06/02/1987 | US4670016 Method and unit for treatment of skins with a view to separating the wool from them, and constituent means |
| 04/01/1987 | EP0216271A2 Phosphonic-acid derivatives for use as adjuvants in leather manufacture |
| 02/04/1987 | EP0210481A2 Method of deliming hides and use of sulphurous acid cyclic esters as deliming agents |
| 01/28/1987 | EP0209780A2 Leather-treating agent and its use |
| 01/13/1987 | US4636222 Alkalinity, proteolytic |
| 12/23/1986 | US4631064 Depilatory compositions |
| 11/12/1986 | EP0201054A1 Tanning process saving chrome |
| 10/21/1986 | US4618344 Depilatory compositions |
| 10/15/1986 | EP0197918A1 Method of liming hides and skins |
| 10/08/1986 | EP0196896A2 Method and composition for removal of hair from skin |
| 09/30/1986 | US4614520 Leather processing |
| 09/23/1986 | CA1211715A1 Depilatory compositions |
| 09/17/1986 | CN85101599A Leather softener and depilatory |
| 09/10/1986 | CN85102770A Technology of de-hairing with triethanolamine |
| 08/27/1986 | CN85100819A New pollution-free tanning technology |
| 07/29/1986 | CA1208563A1 Depilatory compositions |
| 05/07/1986 | EP0180135A2 Microbial process for obtaining dehaired hides from animal skin |
| 04/08/1986 | US4581148 Alkali buffer, anionic surfactant, thioglycolates |
| 02/25/1986 | US4572721 Method for degreasing natural skins, hides and pelts |
| 01/15/1986 | EP0167809A1 Process for the quick tanning of leather, and pretanning agent used therein |
| 10/22/1985 | US4548608 Depilating composition and method |
| 04/24/1985 | EP0138263A2 Hides treating process and unit for removing wool therefrom and constituent means |
| 11/27/1984 | US4484924 Process for producing unhaired, storable hides and skins |
| 11/06/1984 | CA1177271A1 Skin washer |
| 10/23/1984 | US4478728 Process and compositions for preserving fresh hides and skins |
| 07/03/1984 | US4457759 Dehairing with proteolytic enzyme, oxidation of sulfides with hydrogen peroxide |
| 04/17/1984 | US4443221 Tanning method |
| 01/03/1984 | US4424059 Process and compositions for preserving fresh hides and skins |
| 08/16/1983 | US4398911 Cellulose ethers as thickeners |
| 06/28/1983 | US4390339 Method for removal of fungi formed on hides |
| 06/14/1983 | CA1147908A1 Soaking and liming of hides and skins |
| 06/07/1983 | CA1147726A1 Process for preparing macromolecular biologically active collagen |
| 05/17/1983 | CA1146303A1 Chrome utilization in chrome tanning |
| 04/12/1983 | US4379709 Process for disinfecting and preserving hides and skins |
| 03/22/1983 | US4377387 Deliming hides |
| 02/15/1983 | CA1141109A1 Soaking method |
| 11/17/1982 | EP0064761A1 Pickling and tanning process and pickling composition |
| 09/30/1982 | WO1982003228A1 An environment-protecting method for the liming of raw hides |
| 09/28/1982 | US4351639 Tanning, sodium or calcium sulfide |
| 09/15/1982 | EP0059909A1 Method of deliming hides |
| 09/07/1982 | US4348201 Chromium or aluminum salts; upgrading; pollution control; high speed |
| 08/17/1982 | US4344762 Soaking method |
| 08/10/1982 | CA1129241A1 Method of processing mechanically removed porcine skins for ultimate gelatin or leather production |
| 08/03/1982 | CA1128880A1 Process for the enzymatic softening of furs |
| 05/04/1982 | US4327997 Chrome utilization in chrome tanning |
| 04/06/1982 | CA1121109A1 Use of water-insoluble alkali metal aluminosilicates and polycarboxylic acids in the tanning process for the production of leather |
| 03/30/1982 | US4322210 Auxiliary, and process, for the soaking of hides |
| 03/03/1982 | EP0046644A2 Improved chrome utilization in chrome tanning |
| 02/09/1982 | US4314803 Chrome, pickling, hexamethylenetetramine |
| 02/09/1982 | US4314801 Soaking method |
| 01/12/1982 | US4310328 Process for liming pelts of animal hides and skins |
| 10/13/1981 | US4294087 Enzymatic method for hair recovery with concurrent opening of hide structure |
| 10/06/1981 | CA1110014A1 Use of fine-particulate alkali metal aluminosilicates in the process of washing and cleaning rawhides and fur skins |
| 09/08/1981 | US4288556 Depilatory enzyme produced by streptomyces |
| 07/28/1981 | US4280345 Apparatus for cleansing cattle hides |
| 07/21/1981 | US4279812 Process for preparing macromolecular biologically active collagen |
| 07/14/1981 | US4278432 Soaking method |
| 06/30/1981 | CA1104127A1 Method for preparing pyrogen free collagen |
| 06/16/1981 | US4273876 Enzymatic bating method |
| 06/10/1981 | EP0029906A1 Method of reducing the friction in the wet steps of leather manufacture |
| 06/09/1981 | US4272242 Use of water-insoluble aluminosilicates in tanning process for the production of leather |
| 05/06/1981 | EP0027964A1 Process for soaking and liming hides and pelts |
| 05/05/1981 | CA1100258A1 Lime-free and sulfide-free liming process |
| 04/28/1981 | CA1099857A1 Treatment of pelts |
| 04/07/1981 | US4260686 Contacting with an acid protease liquor |
| 04/01/1981 | EP0025933A1 Aid mixture and process for soaking hides and pelts |
| 11/26/1980 | EP0019435A2 A tanning process and tanning compositions |
| 10/21/1980 | US4229175 Lime-free and sulfide-free liming process |
| 09/23/1980 | US4224028 Retardation of the putrefaction of hides and skins |
| 09/16/1980 | US4222741 Dehairing, chemically burning, acidification, neutralization, washing |
| 09/09/1980 | US4221564 Water-insoluble alkali metal aluminosilicates and polycarboxylic acids in the tanning process for the production of leather |
| 09/03/1980 | EP0014721A1 Method of tanning rawhide |
| 08/12/1980 | US4217104 Process for the production of fur skins |
| 07/22/1980 | US4213760 Deliming of hides |
| 07/01/1980 | US4210416 Partial or total replacement of electrolyte; maintenance of ph within specified range |
| 05/13/1980 | US4202664 Method for cleansing cattle hides and apparatus for realizing same |
| 11/28/1979 | EP0005546A2 Use of water-insoluble aluminium silicates in the tanning of leather by chromium compounds |
| 11/27/1979 | US4175922 Dehairing skin and hide |
| 10/04/1979 | WO1979000712A1 Method of tanning rawhide |
| 08/14/1979 | US4164393 Propionic acid and sorbic acid |
| 09/12/1978 | CA1038315A1 Enzymatic treatment of hides |
| 08/08/1978 | US4105402 Treatment of sulfide-limed pelts in acid baths |
| 08/02/1977 | US4039281 Method for the preparation of leather and fur skins |
| 07/12/1977 | US4035146 Binding of antimicrobial compounds to a hydroxyl containing substrate with cyanuric chloride |
| 05/31/1977 | US4026712 Microorganism inhibitors |
| 04/26/1977 | US4019956 Plumping and predigesting in sodium perborate and urea, dissolving with bacterial protease |
| 12/14/1976 | US3997290 Process to separate and recover the solid and liquid phases from treatment baths of hides and skins |
| 10/19/1976 | US3986926 Method for preparing tannable pelts from animal skins and hides |
| 06/29/1976 | US3966551 Method for preparing tannable pelts from animal skins and hides |
| 02/17/1976 | US3939040 Bacterial and fungus protease |