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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Total: 621
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Patent Number Title Of Patent Date Issued
5158577 Process for precipitating alumina from Bayer process liquor October 27, 1992
5149442 Reduction of halogenated organic compounds in spent bleach liquor September 22, 1992
5145527 Apparatus for applying foamed treating liquor September 8, 1992
5143579 Treatment of black liquor with a screw extruder evaporator September 1, 1992
5143580 Process for reducing the amount of halogenated organic compounds in spent liquor from a peroxide... September 1, 1992
5143702 Two stage white liquor oxidation apparatus September 1, 1992
5144077 Process for working up the crystallization mother liquor from the resolution of the racemate of ... September 1, 1992
5133831 Method of concentrating black liquor by evaporation July 28, 1992
5127950 Short-prismatic aluminum hydroxide, process for preparing same from supersaturated sodium alumin... July 7, 1992
5127993 Method of enhancing green liquor semi-chemical pulp production July 7, 1992
5116507 Treatment for reducing impurities in aqueous liquor May 26, 1992
5112441 Process for the recovery of heat and chemicals from spent liquor May 12, 1992
5112500 Purification of aqueous liquor May 12, 1992
5110566 Chromatographic separation of zirconium isotopes with reduced waste liquor May 5, 1992
5108722 Sulfate removal from chlorate liquor April 28, 1992
5103522 Sequential oxidative and reductive bleaching in a multicomponent single liquor system April 14, 1992
5102426 Process for precipitating alumina from bayer process liquor April 7, 1992
5102544 Apparatus for continuously removing crystals from a mother liquor and for washing the crystals April 7, 1992
5095141 Process for pseudocumene oxidation to trimellitic acid with mother liquor recycle March 10, 1992
5093092 Purification of bayer process liquor with alumina coated with a layer or carbon March 3, 1992
5091562 Process for eliminating 1-carboxy-1-phosphonocyclopentan-3-one from, or reducing its content in,... February 25, 1992
5089087 Make-up liquor and black liquor evaporating process during pulp production February 18, 1992
5082526 Process of producing kraft pulping liquor by the oxidation of white liquor in the presence of li... January 21, 1992
5080756 Kraft pulping process with spent sulphuric acid addition to strong black liquor January 14, 1992
5068095 Method for reducing the amount of colorants in a caustic liquor November 26, 1991
5062960 Method and apparatus for recovering an acid from an acid-containing waste liquor November 5, 1991
5057191 Processing method or photographic processing waste liquor October 15, 1991
5053108 High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips October 1, 1991
5047119 Method of stabilizing white liquor flow in the causticizing of green liquor from a kraft paper p... September 10, 1991
5035911 Process of producing liquor-included ice July 30, 1991
5034094 Method of converting inorganic materials from kraft pulping liquor into pulping chemicals withou... July 23, 1991
5032686 Method for the recovery of citric acid from a liquor containing the same July 16, 1991
5030474 Method for forming hydroxyapatite coating film using coating liquor containing hydroxyapatite July 9, 1991
5027891 Method for transferring heat between process liquor streams July 2, 1991
5013440 Flushing liquor decanter drag modification May 7, 1991
5013562 Liquor included ice May 7, 1991
5011571 Method for treating photographic process waste liquor through concentration by evaporation and a... April 30, 1991
5009906 Method and composition for filtering beer, ale or malt liquor to reduce multivalent metal cation... April 23, 1991
5004522 Method of treating photographic process waste liquor through concentration by evaporation April 2, 1991
4994613 Process for preparing 4-hydroxyacetophenone oxime with mother liquor recycle February 19, 1991
4988407 Process and apparatus for producing dry black liquor solids January 29, 1991
4985118 Method for treating photographic process waste liquor through concentration by evaporation January 15, 1991
4981556 Process for the preparation of sulfide-free alkali liquor using copperoxide January 1, 1991
4980282 Treatment of corn steep liquor December 25, 1990
4977761 Liquor applying nozzle for a textile dyeing machine December 18, 1990
4968353 Method for refining sugar liquor November 6, 1990
4961752 Sequential oxidative and reductive bleaching in a multicomponent single liquor system October 9, 1990
4959122 Apparatus for treating photographic process waste liquor September 25, 1990
4954262 Method and apparatus for recovering sulfuric acid from a titanium sulfate waste liquor September 4, 1990
4952276 Method for measuring the bleaching content of pulp bleaching liquor using a chemiluminescent rea... August 28, 1990
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