U.S. patents available from 1976 to present.
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...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!

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Class 127/55 - Filtering or sorption


Subclass of Class 127 - Sugar, starch, and carbohydrates
Definition: Processes for separating impurities from solutions by filtration
No. of patents: 166
Last issue date: 01/01/2008


        5  
NumberTitleIssue Date
4057437Continuous belt filter and filtration method
An endless belt gravity filtration apparatus which includes a vacuum system for removing filter cake and for cleaning and keeping filter belt porous through reverse air flow on the endless belt filter. The belt filter has extensions along each of its cont...
11/08/1977
4046590Process for the production of a colorless sugar syrup from cane molasses
A process for producing a colorless low-ash, high-purity sugar syrup from cane molasses wherein centrifuged molasses is acidified and treated with an ion exclusion resin. The resin is then eluted with water, and fractions of similar compositions are combi...
09/06/1977
4045242Process for the purification of sugarbeet juice and the reduction of lime salts therein
A method for decalcifying raw sugar juice by the addition of active MgO to the final carbonation gassing vessel, carbonating to an alkalinity of about 0.01% CaO equivalent, and then re-alkalizing in a secondary reaction vessel with additional active MgO t...
08/30/1977
4040861Process of refining enzymatically produced levulose syrups
Refining process for removing impurities from enzymatically produced levulose syrups comprises treating the syrups with a strong acid cation exchange resin, a weak base anion exchange resin, and sulfonated coal which has decolorizing ability. The process ...
08/09/1977
4025357Ion exchange enrichment of impure dextrose solutions
Mother liquors obtained from a dextrose crystallization process may be upgraded for re-cycling to dextrose crystallizers by transferring the mother liquor through a bed of an adsorption agent which preferentially adsorbs either dextrose or oligosaccharide...
05/24/1977
3994743Clarification and treatment of sugar juice
Method and apparatus for treating fresh, unheated sugar cane juice which involves adding a sufficient amount of an aqueous alkaline slurry containing powdered active carbon to the juice to raise the pH of the juice to 6.8-8.5. The resulting mud is separat...
11/30/1976
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