Patents by Inventor Leonard T. Lehmann

Leonard T. Lehmann 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).

  • Bioabsorbable coating for a surgical device
    Patent number: 5032638
    Abstract: A suture coating comprising a copolymer having about 60 to 80 weight percent of .beta.-hydroxybutyrate linkages is disclosed. The remaining linkages can be at least .beta.-hydroxyvalerate. In one embodiment, the coating is the copolymer combined with a stearoyl lactylate having the formula: ##STR1## wherein X is at least two, and R is an alkaine-earth metal.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: July 16, 1991
    Assignee: American Cyanamid Company
    Inventors: David W. Wang, Leonard T. Lehmann
  • Bioabsorbable surgical suture coating
    Patent number: 4857602
    Abstract: A bioabsorbable coating for a surgical suture or ligature is disclosed. The coating is manufactured from a diblock or a triblock copolymer.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: August 15, 1989
    Assignee: American Cyanamid Company
    Inventors: Donald J. Casey, Louis Rosati, Peter K. Jarrett, Leonard T. Lehmann
  • Bioabsorbable coating for a surgical article
    Patent number: 4791929
    Abstract: A bioabsorbable coating for a surgical article comprises a copolymer manufactured from the monomer caprolactone and at least one other copolymerizable monomer. The surgical article can be a bioabsorbable suture or ligature.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 20, 1988
    Assignee: American Cyanamid Company
    Inventors: Peter K. Jarrett, Donald J. Casey, Leonard T. Lehmann
  • Bioabsorbable coating for a surgical article
    Patent number: 4788979
    Abstract: A bioabsorbable coating for a surgical article comprises a copolymer manufactured from the monomer caprolactone and at least one other copolymerizable monomer. The surgical article can be a bioabsorbable suture or ligature.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 6, 1988
    Assignee: American Cyanamid Company
    Inventors: Peter K. Jarrett, Donald J. Casey, Leonard T. Lehmann
  • Surgical filament coating
    Patent number: 4711241
    Abstract: The invention discloses a surgical filament having a coating comprising a compound of the formula: ##STR1## wherein x is at least 2, R' is selected from the group consisting of an alkaline-earth metal ion or radical, and R" is an alkyl group having at least 12 carbon atoms in the backbone. In a specific embodiment, the surgical filament is a bioabsorbable suture or ligature manufactured from a polymer containing at least one glycolic acid ester linkage.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: December 8, 1987
    Assignee: American Cyanamid Company
    Inventor: Leonard T. Lehmann
  • Surgical suture coating
    Patent number: 4705820
    Abstract: A surgical suture coating comprising a random copolymer is disclosed. The copolymer has about 25 to 75 weight percent of glycolic acid ester linkages. The remaining linkages comprise at least trimethylene carbonate. The copolymer has a glass transition temperature at or below ambient temperature.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: November 10, 1987
    Assignee: American Cyanamid Company
    Inventors: David W. Wang, Donald J. Casey, Leonard T. Lehmann