Patents by Inventor Chris F. Edwardson

Chris F. Edwardson 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).

  • Birch bark processing and the isolation of natural products from birch bark
    Patent number: 7264184
    Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: September 4, 2007
    Assignee: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor V. Kolomitsyn, Chris F. Edwardson
  • Birch bark processing and the isolation of natural products from birch bark
    Patent number: 6815553
    Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: November 9, 2004
    Assignee: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor V. Kolomitsyn, Chris F. Edwardson
  • Birch bark processing and the isolation of natural products from birch bark
    Patent number: 6634575
    Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: October 21, 2003
    Assignee: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor M. Kolomitsyn, Chris F. Edwardson
  • Birch bark processing and the isolation of natural products from birch bark
    Publication number: 20020070167
    Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.
    Type: Application
    Filed: February 6, 2002
    Publication date: June 13, 2002
    Applicant: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor V. Kolomitsyn, Chris F. Edwardson
  • Birch bark processing and the isolation of natural products from birch bark
    Publication number: 20020043577
    Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.
    Type: Application
    Filed: August 23, 2001
    Publication date: April 18, 2002
    Applicant: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor M. Kolomitsyn, Chris F. Edwardson
  • Agriculture residue based absorbent material and method for manufacture
    Patent number: 5891937
    Abstract: An absorbent agriculture residue product and method of making the product. Preferably the agriculture residue material is reduced in size, adhesive added, consolidated to form panels or other shapes and heated to cure the adhesive. Preferably, the agriculture material is reduced in size from less than about 2 inches and the adhesive is present in an amount ranging from between about 2% to about 20% by dry weight. The products possess good absorption characteristics, durability and the ability to retain absorbed liquids upon application of pressure to saturated panels.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: April 6, 1999
    Assignee: Regents of the University of Minnesota
    Inventors: Larry E. Berg, Brian K. Brashaw, Chris F. Edwardson, Roy D. Adams, Robert J. Vatalaro