Patents by Inventor Rupendra Mukerjea

Rupendra Mukerjea has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Linear and cyclic sucrose reaction products, their preparation and their use
    Patent number: 6281351
    Abstract: Sucrose ester and ether products, useful as food or beverage bulking agents, reduced calorie sweeteners, fat replacement agents, stabilizing agents, thickening agents and emulsifying agents; adhesives; biodegradable plastics and films; sizing agents for paper and textiles; ethical pharmaceuticals and new fibers are prepared by using a two-phase reaction system in which sucrose is dissolved in an alkaline, aqueous solution and an acidic reagent such as a bifunctional acid dichloride or epoxide is added to the sucrose in a water-immiscible organic solvent. Several types of products are produced: water-insoluble sucrose ester (ether) copolymers; water-soluble sucrose ester (ether) copolymers; sucrose ester (ether) dimers; and intramolecular, cyclic sucrose esters (ethers). These products can be further varied by using different kinds of acid dichlorides or epoxides that contain different kinds of functional groups.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: August 28, 2001
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Activated mono-, di-, oligo- and polysaccharides, reaction products thereof, their preparation and uses
    Patent number: 6096882
    Abstract: Reaction at the interface of an organic solution containing an acidic reactant and an aqueous alkaline solution containing nonreducing carbohydrates such as sucrose, sugar alcohols, cyclodextrins, and polysaccharides imparts a specificity to the reaction for one or more of the primary alcohol groups of the carbohydrate reactant. The resulting activated, nonreducing carbohydrate intermediate can then be converted to a series of substantially pure, low molecular weight reaction products, including a sucrose trimer and dianhydrosucrose, and to a series of substantially pure, higher molecular weight reaction products, including 6-O-sucro cyclodextrins and poly-6-O-sucro amylose.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: August 1, 2000
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Linear and cyclic sucrose reaction products, their preparation and their use
    Patent number: 6075139
    Abstract: Sucrose ester and ether products, useful as food or beverage bulking agents, reduced calorie sweeteners, fat replacement agents, stabilizing agents, thickening agents and emulsifying agents; adhesives; biodegradable plastics and films; sizing agents for paper and textiles; ethical pharmaceuticals and new fibers are prepared by using a two-phase reaction system in which sucrose is dissolved in an alkaline, aqueous solution and an acidic reagent such as a bifunctional acid dichloride or epoxide is added to the sucrose in a water-immiscible organic solvent. Several types of products are produced: water-insoluble sucrose ester (ether) copolymers; water-soluble sucrose ester (ether) copolymers; sucrose ester (ether) dimers; and intramolecular, cyclic sucrose esters (ethers). These products can be further varied by using different kinds of acid dichlorides or epoxides that contain different kinds of functional groups.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: June 13, 2000
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Activated mono,di,oligo- and polysaccharides, reaction products thereof, their preparation and uses
    Patent number: 6031085
    Abstract: Reaction at the interface of an organic solution containing an acidic reactant and an aqueous alkaline solution containing nonreducing carbohydrates such as sucrose, sugar alcohols, cyclodextrins, and polysaccharides imparts a specificity to the reaction for one or more of the primary alcohol groups of the carbohydrate reactant. The resulting activated, nonreducing carbohydrate intermediate can then be converted to a series of substantially pure, low molecular weight reaction products, including a sucrose trimer and dianhydrosucrose, and to a series of substantially pure, higher molecular weight reaction products, including 6-O-sucro cyclodextrins and poly-6-O-sucro amylose.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: February 29, 2000
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Food and beverage compositions containing linear and cyclic sucrose reaction products
    Patent number: 6007862
    Abstract: Sucrose ester and ether products, useful as food or beverage bulking agents, reduced calorie sweeteners, fat replacement agents, stabilizing agents, thickening agents and emulsifying agents; adhesives; biodegradable plastics and films; sizing agents for paper and textiles; ethical pharmaceuticals and new fibers are prepared by using a two-phase reaction system in which sucrose is dissolved in an alkaline, aqueous solution and an acidic reagent such as a bifunctional acid dichloride or epoxide is added to the sucrose in a water-immiscible organic solvent. Several types of products are produced: water-insoluble sucrose ester (ether) copolymers; water-soluble sucrose ester (ether) copolymers; sucrose ester (ether) dimers; and intramolecular, cyclic sucrose esters (ethers). These products can be further varied by using different kinds of acid dichlorides or epoxides that contain different kinds of functional groups.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: December 28, 1999
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Activated mono-, di-, and polysaccharides reaction products thereof, their preparation and uses
    Patent number: 5900478
    Abstract: Reaction at the interface of an organic solution containing an acidic reactant and an aqueous alkaline solution containing nonreducing carbohydrates such as sucrose, sugar alcohols, cyclodextrins, and polysaccharides imparts a specificity to the reaction for one or more of the primary alcohol groups of the carbohydrate reactant. The resulting activated, nonreducing carbohydrate intermediate can then be converted to a series of substantially pure, low molecular weight reaction products, including a sucrose trimer and dianhydrosucrose, and to a series of substantially pure, higher molecular weight reaction products, including 6-O-sucro cyclodextrins and poly-6-O-sucro amylose.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: May 4, 1999
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea
  • Linear and cyclic sucrose reaction products, their preparation and their use
    Patent number: 5882420
    Abstract: Sucrose ester and ether products, useful as food or beverage bulking agents, reduced calorie sweeteners, fat replacement agents, stabilizing agents, thickening agents and emulsifying agents; adhesives; biodegradable plastics and films; sizing agents for paper and textiles; ethical pharmaceuticals and new fibers are prepared by using a two-phase reaction system in which sucrose is dissolved in an alkaline, aqueous solution and an acidic reagent such as a bifunctional acid dichloride or epoxide is added to the sucrose in a water-immiscible organic solvent. Several types of products are produced: water-insoluble sucrose ester (ether) copolymers; water-soluble sucrose ester (ether) copolymers; sucrose ester (ether) dimers; and intramolecular, cyclic sucrose esters (ethers). These products can be further varied by using different kinds of acid dichlorides or epoxides that contain different kinds of functional groups.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: March 16, 1999
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, Rupendra Mukerjea