Patents by Inventor Annamarie B. Prewett

Annamarie B. Prewett 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).

  • Processing of fibrous connective tissue
    Patent number: 5607476
    Abstract: Fibrous connective tissue for surgical implantation is made substantially antigen-free by contact with one or more extraction agents. Solutions or mixtures of molecules having bipolar regions act as antigen removing permeation enhancers. Cationic, anionic, non-ionic or amphoteric surfactants are suitable bipolar permeation enhancers. One or more extraction agents can be combined to form extraction mixtures.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: March 4, 1997
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Robert K. O'Leary
  • Process for producing flowable osteogenic composition containing demineralized bone particles
    Patent number: 5510396
    Abstract: Demineralized bone particles having a median length to median thickness ratio of at least about 10:1 are incorporated in an osteogenic composition useful for repairing bone defects.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: April 23, 1996
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather
  • Processing of fibrous connective tissue
    Patent number: 5507810
    Abstract: Fibrous connective tissue for surgical implantation is made substantially antigen-free by contact with one or more extraction agents. Solutions or mixtures of molecules having bipolar regions act as antigen removing permeation enhancers. Cationic, anionic, non-ionic or amphoteric surfactants are suitable bipolar permeation enhancers. One or more extraction agents can be combined to form extraction mixtures.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: April 16, 1996
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Robert K. O'Leary
  • Shaped, swollen demineralized bone and its use in bone repair
    Patent number: 5439684
    Abstract: A shaped piece of swollen demineralized bone which can also be plasticized is provided for use in surgical bone repair.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 8, 1995
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather, Simon Bogdansky, Robert K. O'Leary
  • Osteogenic composition and implant containing same
    Patent number: 5405390
    Abstract: An osteogenic composition is obtained from demineralized bone tissue.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: April 11, 1995
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett
  • Demineralized bone particles and flowable osteogenic composition containing same
    Patent number: 5314476
    Abstract: Demineralized bone particles having a median length to median thickness ratio of at least about 10:1 are incorporated in an osteogenic composition useful for repairing bone defects.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: May 24, 1994
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather
  • Shaped, swollen demineralized bone and its use in bone repair
    Patent number: 5298254
    Abstract: A shaped piece of swollen demineralized bone which can also be plasticized is provided for use in surgical bone repair.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: March 29, 1994
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather, Simon Bogdansky, Robert K. O'Leary
  • Osteogenic composition and implant containing same
    Patent number: 5236456
    Abstract: An osteogenic composition is obtained from demineralized bone tissue.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: August 17, 1993
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett
  • Process for debriding bone
    Patent number: 5120656
    Abstract: Bone is enzymatically debrided prior to undergoing further processing which renders the bone suitable for osteoprosthetic use.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: June 9, 1992
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett