Patents by Inventor Tin-Ho Chiu

Tin-Ho Chiu 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).

  • Polycarbonate-based block copolymers and devices
    Patent number: 5531998
    Abstract: This invention relates to a novel polycarbonate-based block polymer, and to fibers and bioresorbable implantable medical devices fabricated from said fibers.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: July 2, 1996
    Assignee: United States Surgical Corporation
    Inventors: Frank Mares, William J. Boyle, Jr., Reginald T.-H. Tang, Kundanbhai M. Patel, Abraham M. Kotliar, Tin-Ho Chiu
  • Medical devices fabricated from copolymers having recurring carbonate units
    Patent number: 5486593
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: January 23, 1996
    Assignee: United States Surgical Corporation
    Inventors: Regianld T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • Medical devices fabricated from homopolymers and copolymers having recurring carbonate units
    Patent number: 5412068
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: May 2, 1995
    Assignee: United States Surgical Corporation
    Inventors: Reginald T.-H. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • High molecular weight bioresorbable polymers and implantable devices thereof
    Patent number: 5358475
    Abstract: Nerve channels made from high molecular weight lactic acid polymers, preferably polymers having a molecular weight between about 234,000 and 320,000, provide an unexpectedly beneficial effect on cell growth and regeneration of function.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: October 25, 1994
    Assignee: United States Surgical Corporation
    Inventors: Frank Mares, Reginald T. Tang, Tin-Ho Chiu, Theodore Largman
  • Medical devices fabricated from homopolymers and copolymers having recurring carbonate units
    Patent number: 5274074
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: December 28, 1993
    Assignee: United States Surgical Corporation
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • Medical devices fabricated from homopolymers and copolymers having recurring carbonate units
    Patent number: 5256764
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: October 26, 1993
    Assignee: United States Surgical Corporation
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides
    Patent number: 5185408
    Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: February 9, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundan M. Patel
  • Medical devices fabricated from homopolymers and copolymers having recurring carbonate units
    Patent number: 5152781
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: October 6, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • Homopolymers and copolymers having recurring carbonate units
    Patent number: 5145945
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: September 8, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Reginald Ting-Hong Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbbai Patel
  • Polycarbonate-based block copolymers and devices
    Patent number: 5120802
    Abstract: This invention relates to a novel polycarbonate-based block polymer, and to fibers and bioresorbable implantable medical devices fabricated from said fibers.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: June 9, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Frank Mares, William J. Boyle, Jr., Reginald T. Tang, Kundanbhai M. Patel, Abraham M. Kotliar, Tin-Ho Chiu
  • Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides
    Patent number: 5066772
    Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: November 19, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundan M. Patel
  • Bioresorbable polymers and implantation devices thereof
    Patent number: 5061281
    Abstract: This invention relates to an implantable medical device capable of encouraging cellular growth and regeneration of function fabricated totally or in part from one or more bioresorbable polymers, as for example bioresorbable homopolymers derived from the polymerization of alpha-hydroxy carboxylic acids, where at least one of the polymers has an average molecular weight of from about 234,000 to about 320,000 as measured by gel permeation chromatography.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: October 29, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Frank Mares, Reginald T. Tang, Tin-Ho Chiu, Theodore Largman, Emery Nyilas, deceased
  • Medical devices fabricated from homopolymers and copolymers having recurring carbonate units
    Patent number: 4920203
    Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: April 24, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundabhai M. Patel
  • Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides
    Patent number: 4916193
    Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: April 10, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
  • Polycarbonate random copolymer-based fiber compositions and method of melt-spinning same and device
    Patent number: 4891263
    Abstract: This invention is directed to novel random copolymers and implantable devices fabricated therefrom.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: January 2, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Abraham M. Kotliar, William J. Boyle, Jr., Reginald T. Tang, Frank Mares, Kundanbhai M. Patel, Tin-Ho Chiu
  • Method of forming prosthetic devices
    Patent number: 4670286
    Abstract: A sterile shaped prosthetic device, suitable for insertion into a mammalian body, is at least partly composed of a bioresorbable material that is digestible by macrophages, its surface properties favor the attachment and adhesion of fibroblast cells capable of producing collagen for organized connective tissues, and the material itself or its degradation products can induce in vivo the formation of new capillary vessels (termed a "vasotropic" effect herein). Preferred prosthetic devices have through passages, the interspatial dimensions which are sufficient to permit several layers of mammalian cells to form within each passage. The invading fibroblast cells commence formation of collagen leading to connective tissue while macrophages and extracellular enzymes degrade the material, and newly formed capillary vessels penetrate the prosthesis and provide blood containing oxygen and nutrients which further the formation of organized tissue around as well as within the prosthetic device.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: June 2, 1987
    Assignee: Allied Corporation
    Inventors: Emery Nyilas, Tin-Ho Chiu
  • Prosthetic devices derived from krebs-cycle dicarboxylic acids and diols
    Patent number: 4594407
    Abstract: A sterile shaped prosthetic device, suitable for insertion into a mammalian body, is at least partly composed of a bioresorbable material that is digestible by macrophages, its surface properties favor the attachment and adhesion of fibroblast cells capable of producing collagen for organized connective tissues, and the material itself or its degradation products can induce in vivo the formation of new capillary vessels (termed a "vasotropic" effect herein). Preferred prosthetic devices have through passages, the interspatial dimensions which are sufficient to permit several layers of mammalian cells to form within each passage. The invading fibroblast cells commence formation of collagen leading to connective tissue while macrophages and extracellular enzymes degrade the material, and newly formed capillary vessels penetrate the prosthesis and provide blood containing oxygen and nutrients which further the formation of organized tissue around as well as within the prosthetic device.
    Type: Grant
    Filed: September 20, 1983
    Date of Patent: June 10, 1986
    Assignee: Allied Corporation
    Inventors: Emery Nyilas, Tin-Ho Chiu
  • Bioresorbable polyesters and polyester composites
    Patent number: 4481353
    Abstract: Bioresorbable polyesters composed of, in one aspect, the Krebs Cycle dicarboxylic acid or isomer or anhydride thereof, chosen for the group consisting of succinic acid, fumaric acid, oxaloacetic acid, L-malic acid, and D-malic acid, a diol having 2, 4, 6, or 8 carbon atoms, and an alpha-hydroxy carboxylic acid chosen from the group consisting of glycolic acid L-lactic acid and D-lactic acid.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: November 6, 1984
    Assignee: The Children's Medical Center Corporation
    Inventors: Emery Nyilas, Tin-Ho Chiu