Patents by Inventor John F. Robyt

John F. Robyt 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).

  • Publication number: 20040096560
    Abstract: Modified starch materials having a number average molecular weight of at least 10,000 for nutritional products provide a relatively slow release of metabolizable carbohydrates, giving a source of carbohydrate energy over a longer period of time than can be obtained from glucose and other carbohydrates such as lactose, fructose, or sucrose. Such modified starch materials possess altered processing and pasting profile characteristics.
    Type: Application
    Filed: November 7, 2003
    Publication date: May 20, 2004
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Rickey L. Sharp, John F. Robyt, Murray L. Kaplan
  • Patent number: 6676984
    Abstract: Modified starch materials having a number average molecular weight of at least 10,000 for nutritional products provide a relatively slow release of metabolizable carbohydrates, giving a source of carbohydrate energy over a longer period of time than can be obtained from glucose and other carbohydrates such as lactose, fructose, or sucrose. Such modified starch material possess altered processing and pasting profile characteristics.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: January 13, 2004
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Rickey L. Sharp, John F. Robyt, Murray L. Kaplan
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Patent number: 5695803
    Abstract: Modified starch materials having a number average molecular weight of at least 10,000 for nutritional products provide a relatively slow release of metabolizable carbohydrates, giving a source of carbohydrate energy over a longer period of time than can be obtained from glucose and other carbohydrates such as lactose, fructose, or sucrose.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 9, 1997
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Rickey L. Sharp, John F. Robyt, Murray L. Kaplan
  • Patent number: 4335100
    Abstract: Dextransucrase synthesis of dextran from sucrose is inhibited by substituted sucrose compounds which have an inhibiting group bonded to the 5-position ring carbon. Oral compositions containing such substituted sucrose compounds can be used to control dextran formation in the mouth, and dextran comprises the principal component of dental plaque.
    Type: Grant
    Filed: August 6, 1980
    Date of Patent: June 15, 1982
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, John N. Zikopoulos
  • Patent number: 4228150
    Abstract: Dextransucrase synthesis of dextran from sucrose is inhibited by novel fluorosucroses which are substituted with fluorine for at least the C.sub.6 hydroxyl, and which may also be substituted with fluorine for other hydroxyls. Oral compositions containing such fluorosucrose can be used to control dextran formation in the mouth. Dextran comprises the principal component of dental plaque.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: October 14, 1980
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John F. Robyt, John N. Zikopoulos