Patents by Inventor Charles R. Wheeler

Charles R. Wheeler 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).

  • Patent number: 7067499
    Abstract: A composition of a cationic polygalactomannan or a derivative of cationic polygalactomannans is provided that has a mean average molecular weight (Mw) having a lower limit of 5,000 and an upper limit of 200,000 and has a light transmittance in a 10% aqueous solution of greater than 80% at a light wavelength of 600 nm and a protein content of less than 1.0% by weight of polysaccharide, and aldehyde functionality content of at least of 0.01 meq/gram. This composition is prepared in continuous or batch processes using either oxidizing reagents or combination of hydrolytic reagents and oxidizing reagents. This composition is used in personal care and household care products.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: June 27, 2006
    Assignee: Hercules Incorporated
    Inventors: Paquita Erazo-Majewicz, Jashawant J. Modi, Charles R. Wheeler, Jr., Zu-Feng Xu
  • Publication number: 20030211952
    Abstract: A composition of a cationic polygalactomannan or a derivative of cationic polygalactomannans is provided that has a mean average molecular weight (Mw) having a lower limit of 5,000 and an upper limit of 200,000 and has a light transmittance in a 10% aqueous solution of greater than 80% at a light wavelength of 600 nm and a protein content of less than 1.0% by weight of polysaccharide, and aldehyde functionality content of at least of 0.01 meq/gram. This composition is prepared in continuous or batch processes using either oxidizing reagents or combination of hydrolytic reagents and oxidizing reagents. This composition is used in personal care and household care products.
    Type: Application
    Filed: April 4, 2003
    Publication date: November 13, 2003
    Inventors: Paquita Erazo-Majewicz, Jashawant J. Modi, Charles R. Wheeler, Zu-Feng Xu
  • Publication number: 20020076769
    Abstract: Presented are compositions of reduced molecular weight galactomannans, particularly guar gum, which have been oxidized by the enzyme galactose oxidase. Further, the invention relates to a process for enzymatically reducing the molecular weight of a galactomannan wherein the galactomannan is simultaneously or subsequently oxidized using galactose oxidase, optionally in combination with other enzymes including peroxidases and or catalases. This process enables production of high concentrations of oxidized galactomannans, which have particular use in the paper making industry.
    Type: Application
    Filed: August 2, 2001
    Publication date: June 20, 2002
    Inventors: Richard Brady, H. N. Cheng, Alfred Jacques Haandrikman, Allison B. Moore, Pong-Kuen Kuo, William T. McNabola, Charles R. Wheeler, Zu-Feng Xu, Richard James Riehle, Tuyen Thanh Nguyen, Hielke T. Jeerd de Vries, John Arthur Lapre