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Class 8/94.16 - Depilating


Subclass of Class 8 - Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
Definition: Processes for treating a hide or skin for the purpose of
No. of patents: 47
Last issue date: 10/18/2011


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NumberTitleIssue Date
8038723Epilatory compositions
An epilatory composition, substantially provided as flat strips, comprises a gel-like matrix material, for example a rosin-based or sugar-based material and, mixed with the matrix material, a particulate material, for example colloidal particles of fumed silica, and...
10/18/2011
7404826Method for removing horn substance from skins, pelts or furs
Horny substances are removed from hides, pelts or skins of dead animals by treating the hides, pelts or skins in aqueous liquor with one or more compounds of the formula I or their corresponding alkali metal or alkaline ear...
07/29/2008
7250062Method for removing horn substances from animal skin
The invention relates to a method for removing horn substances from animal skin. The method is characterized in that animal skins are treated in an aqueous bath containing between 0.05 and 5 wt. %, in relation to the weight of the salt, of at least one compound of g...
07/31/2007
7198647Process for lime and sulfide free unhairing of skins or hides using animal and/or plant enzymes
The present invention relates to a process for lime- and sulfide-free unhairing of skins/hides using animal and/or herbal (plant) enzymes. The process comprises presoaking the skins or hides in water for 2–6 hours, pasting an enzyme solution of animal or plant ori...
04/03/2007
7186546Process for the preparation of alkaline protease
The present invention relates to a process for the preparation of alkaline protease using a fungal culture of the order entomophthorales and to the use of the said protease in the pretanning processes of leather manufacture. ...
03/06/2007
7134957Method for reducing microbial levels on the hide of an animal
Disclosed is a novel method for reducing microbial levels on a hide of an animal. In one embodiment, the method comprises stunning the animal having a hide with a quantity of microorganisms on its hair, contacting the hide of the animal with an alkaline solution hav...
11/14/2006
7022005Method for reducing microbial levels on the hide of an animal
Disclosed is a novel method and system for dehairing an animal, providing a system for recycling and safely disposing of chemical and biological wastes produced during such dehairing method. Included in such method are processes for handling sodium production in was...
04/04/2006
7013838Bleached expanded pigskin and products
Pigskin is processed to provide a bleached, expanded skin used in dog treat or chew products. The raw pigskin is dehaired and then daubed with an alkali mixture of an alkali liquid, alkali enzymes and lime, the mixture having a pH of greater than or equal to 12. The...
03/21/2006
6916348Dyed leather and method for dyeing tanned leather
Tanned leather is (a) pretreated in an aqueous and alkaline medium either with ammonia, primary amines or a mixture of ammonia and primary amines and then with a polyfunctional organic compound containing at least one aldehyde group as a functional group, or (b) in ...
07/12/2005
6689172Auxiliary for liming and loosening hairs of animal skins
The invention concerns an auxiliary for liming and loosening hairs of animal skins, containing, in aqueous solution: 10 to 50 wt. % of a polysaccharide solution; 5 to 25 wt. % of a mercapto-carboxylic acid or one of its salts; and 1 to 10 wt. % of a merca...
02/10/2004
6589293Depilatory paint thickener comprising an anylopectin starch
The invention relates to the dehairing (depilating) of animal pelts, hides or skins, more specifically to depilatory paint and depilatory paint (depilation paint) thickener used in the depilation process in for example fellmongeries. The invention provide...
07/08/2003
6482240Method of making a collagen membrane from porcine skin
Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen...
11/19/2002
6387135Treatment of hides
A process and apparatus for the treatment of hides and skins (3). The hide or skin is placed on a support (1, 2) and sealed to the support around the edges of the skin or hide. A treatment liquor is then supplied under pressure between the skin or hide an...
05/14/2002
6130309Hydrophilic polyether polyurethanes containing carboxylic acid
An improved polyurethane is prepared by reacting a diol, an organic diisocyanate and a carboxylic acid with a critical selection of the amount of water in the reaction mixture. The polyurethane has improved adhesion, hydrophilicty and strength. The polyme...
10/10/2000
5939478Silicone polyether stabilized silicone latex solvent thickening
The viscosity of a solvent is modified by thickening the solvent with a silicone latex. A silicone latex having a plurality of crosslinked polysiloxane particles is first prepared by mixing the siloxane polymer, a surfactant, and water; emulsifying the mi...
08/17/1999
5897857Depilatory compositions comprising sulfhydryl compounds
The subject invention involves topical depilatory composition at a pH 7 or below, comprising sulfhydryl compounds. The subject invention further relates methods for removing vellus hair from mammalian comprising topical application of a composition, at a ...
04/27/1999
5868798Treatment of hides
A process and apparatus for treating animal skins or hides (10) comprises stretching the hide to extend it and to open the structures and mounting the hide in a frame (15) by ties (12) extending between the hide edge attachments (11) and the frame. The hi...
02/09/1999
5833718Sodium potassium sulfide composition and method for preparing same
Describes an aqueous composition of sodium potassium sulfide and methods for preparing this inter-alkali metal sulfide. One method described is the addition of sodium hydrosulfide to potassium hydroxide in an aqueous reaction medium. The aqueous sodium po...
11/10/1998
5817155Emulsion for hair treatment
An emulsion for hair treatment is provided which is characterized by the following: the formulation (I) is composed of a W/O type emulsion, which allows the main agent to be stable, and contains preferably an oil soluble polymer compound for the emulsifie...
10/06/1998
5770583Stable sulfide compositions uses and process for preparation thereof
A stable sulfide containing composition is disclosed, including a process for preparation thereof and a method for using the composition to soften nails or to treat ingrown toenail....
06/23/1998
5468476Reduction of hair growth
Mammalian hair growth is reduced by applying to the skin an inhibitor of nitric oxide synthetase....
11/21/1995
5417966Depilatory composition
Paste A comprising a polysulfide polymer having a specific average molecular weight and specific amounts of liquid and filler components is mixed with Paste B comprising specific amounts of an oxide or peroxide of metal, a vulcanization accelerator, a fil...
05/23/1995
5376042Process for the depilation of animal skins
Current enzymatic processes for the depilation of hair require long processing times and are relatively expensive and chemical processes often create odor and/or effluent disposal problems. In the present invention, skins to be depilated are contacted wit...
12/27/1994
5102422Methods for leather processing including liquid enzyme formulation
Liquid enzyme preparations comprising at least one anhydrous organic liquid as a vehicle for one or more enzymes and methods for using such preparations e.g. in beamhouse operations in the commercial production of leather....
04/07/1992
5026542Depilatory composition
A two part depilatory composition in which the first part comprises polyvinyl alcohol and the second part comprises a cross-linking agent which consists of borax and a polyhydroxy alcohol or of Congo red, the first or second or both parts additionally con...
06/25/1991
4935231Use of thioredoxin, thioredoxin-derived, or thioredoxin-like dithiol peptides in hair care preparations
The subject invention enables a more efficient management of hair by providing a novel preparation for waving, straightening, softening, or removing hair, employing as a key ingredient the compound thioredoxin or a thioredoxin-derived, or thioredoxin-like...
06/19/1990
4729768Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents
In a particularly time-saving and economical process for deliming hides, a cyclic ester of sulfurous acid with an aliphatic 1,2-diol is used as the deliming agent....
03/08/1988
4670016Method and unit for treatment of skins with a view to separating the wool from them, and constituent means
The invention is concerned with a method and a unit for treatment of skins with a view to separating the wool from them. This method consists in combining the following operations: (a) steeping the skins in a waterbath in vertical or sloping stacks (M); (...
06/02/1987
4636222Enzymatic unhairing method
An enzymatic method for the unhairing of hides and skins in the alkaline pH range by treating them in a liquor at a pH from 9 to 11 with a proteolytic enzyme having an optimum activity in the pH range from 2 to 7.5, and then unhairing....
01/13/1987
4631064Depilatory compositions
Aqueous depilatory compositions containing biguanide and active thiol agent(s) which provide for faster hair removal are disclosed....
12/23/1986
4618344Depilatory compositions
Aqueous depilatory compositions containing aminoguanidine and active thiol agent(s) which provide for faster hair removal are disclosed....
10/21/1986
4614520Leather processing
A process is disclosed for preparing a suede leather product from animal hides. The hide is scalded before tanning and the finished product can be washed and ironed in a manner similar to a woolen garment. The hide is pretanned in formaldehyde, neutralize...
09/30/1986
4581148Depilating composition and method
A hair removing composition for use on carcasses, skins, hides, and pelts, containing preselected proportions of alkali, buffering agents, surface active agents, foaming agents, and stabilizers in combination with preselected thioglycolates....
04/08/1986
4548608Depilating composition and method
A composition for removing hair from full hair whole carcasses, skins, hides and pelts comprising:...
10/22/1985
4457759Environment-protecting method for the liming of raw hides
The invention relates to an environment-protecting method for the liming of raw hides, wherein, after an optional mechanical degreasing step, the hides are subjected to presoaking, chemical degreasing, washing, alkaline swelling and collapsing, enzymatic ...
07/03/1984
4443221Tanning method
What are disclosed are improved methods for the preparation of leather wherein, in one or more steps for preparing leather from limed animal skins or hides, including beamhouse operations such as deliming, bating, pickling, and degreasing to prepare unhai...
04/17/1984
4398911Tanning method
What is disclosed are improved methods for the preparation of leather wherein, in one or more steps for preparing leather from animal skins or hides, including beamhouse operations such as soaking, dehairing, opening of the hide structure, deliming, batin...
08/16/1983
4351639Process for liming pelts of animal hides and skins
What is disclosed is a method for liming animal skins and hides which comprises treating said skins and hides with an aqueous alkaline liming liquor comprising a protective colloid, for example a protein such as gelatin, glue, or casein, or a water-solubl...
09/28/1982
4322210Auxiliary, and process, for the soaking of hides
An auxiliary for the soaking of hides and skins, which consists of a salt of the formula I where R is an organic radical of 1 to 8 carbon atoms, which may carry one or more functional groups, and M+ is one equivalent of a cation, mixtures there...
03/30/1982
4310328Process for liming pelts of animal hides and skins
What is disclosed is a method for liming animal skins and hides which comprises treating said skins and hides with an aqueous alkaline liming liquor comprising a protective colloid, for example a protein such as gelatin, glue, or casein, or a water-solubl...
01/12/1982
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