1
Nancy W Y Ho, George T Tsao: Recombinant yeasts for effective fermentation of glucose and xylose. Purdue Research Foundation, Woodard Emhardt Naughton Moriarty & McNett, August 4, 1998: US05789210 (44 worldwide citation)

Described are recombinant yeasts containing genes encoding xylose reductase, xylitol dehydrogenase and xylulokinase, and DNA molecules, vectors and methods useful for producing such yeasts. The recombinant yeasts effectively ferment xylose to ethanol, and preferred yeasts are capable of simultaneous ...


2
Martin M Chang, George T Tsao, Allen W Anderson: Hydrocarbon production. Purdue Research Foundation, Barnes & Thornburg, November 4, 1986: US04621164 (40 worldwide citation)

A process for converting ethanol to gasoline-boiling-range hydrocarbons by contact in the vapor phase at dehydrating temperature with a bifunctional zeolite catalyst in the presence of an equimolar proportion of water. The catalyst induces simultaneous dehydration of the ethanol to reactive intermed ...


3
Ramani Narayan, George T Tsao, Christopher J Biermann: Biodegradable graft copolymers. Purdue Research Foundation, Barnes & Thornburg, January 2, 1990: US04891404 (31 worldwide citation)

A nucleophilic displacement reaction is used to prepare biodegradable thermoplastic copolymers exhibiting a high capacity for stabilizing biodegradable blends of polysaccharides and synthetic thermoplastic polymers. The graft copolymers are characterized by consistent product uniformity and a high d ...


4
George T Tsao, Michael R Ladisch, Christine M Ladisch, Teh An Hsu: Process for treating cellulosic materials and obtaining glucose therefrom. Purdue Research Foundation, John R Nesbitt, Robert E Harris, July 28, 1981: US04281063 (31 worldwide citation)

A process for treating cellulosic materials to obtain glucose therefrom, which process includes an initial acid or base treatment of the cellulosic materials to remove hemicellulose, followed by a solvent treatment of the solid residue to dissolve the native cellulose contained therein. The dissolve ...


5
George T Tsao, Li Fu Chen: Porous cellulose beads. Purdue Research Foundation, Cushman Darby & Cushman, May 16, 1978: US04090022 (29 worldwide citation)

Porous cellulose beads are prepared by distributing droplets of a solvent mixture containing a cellulose derivative into a precipitating solution to form porous beads which are then washed and hydrolyzed to form porous cellulose beads. The porous cellulose beads, which may be cross-linked, if desire ...


6
George T Tsao, Terry Y Chou: Process for recovering and utilizing cellulose using sulfuric acid. Purdue Research Corporation, John R Nesbitt, Robert E Harris, May 12, 1981: US04266981 (29 worldwide citation)

A process for recovering cellulose using sulfuric acid and utilizing the recovered cellulose by hydrolysis to yield glucose. Cellulosic raw materials are hydrolyzed by dilute sulfuric acid to remove hemicellulose, after which the solid residue is separated and is treated with concentrated sulfuric a ...


7
George T Tsao, Michael R Ladisch, Arindam Bose: Acid hydrolysis of cellulose to yield glucose. Purdue Research Foundation, John R Nesbitt, November 20, 1979: US04174976 (24 worldwide citation)

A process to yield glucose from cellulose through acid hydrolysis. Cellulose is recovered from cellulosic materials, preferably by pretreating the cellulosic materials by dissolving the cellulosic materials in Cadoxen or a chelating metal caustic swelling solvent and then precipitating the cellulose ...


8
George T Tsao, Li Fu Chen: Porous cellulose beads and the immobilization of enzymes therewith. Purdue Research Foundation, Cushman Darby & Cushman, December 13, 1977: US04063017 (22 worldwide citation)

Porous cellulose beads are prepared by distributing droplets of a solvent mixture containing a cellulose derivative into an aqueous solution to form porous beads which are then washed and hydrolyzed to form porous cellulose beads. The porous cellulose beads, which may be cross-linked, if desired, by ...


9
Li F Chen, Cheng S Gong, George T Tsao: Mycelial pellets having a support core. Purdue Research Foundation, Cushman Darby & Cushman, January 24, 1984: US04427775 (19 worldwide citation)

Spherical shaped mycelial pellets suitable for use in the biocatalytic conversion of organic compounds are prepared having a rigid spherical core surrounded by a porous webbed layer of structural integrity of a mycelial microorganism. The webbed layer is preferably separated from the core by a subst ...


10
Michael R Ladisch, George T Tsao: Vapor phase dehydration of aqueous alcohol mixtures. Purdue Research Foundation, Cushman Darby & Cushman, August 24, 1982: US04345973 (18 worldwide citation)

A method for dehydration and/or enrichment of aqueous alcohol mixtures wherein the mixtures in the vapor state are contacted with a dehydration agent which is composed of cellulose, caboxymethylcellulose, cornmeal, cracked corn, corn cobs, wheat straw, bagasse, starch, hemicellulose, wood chips, oth ...



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