Patents by Inventor John P. Berry

John P. Berry 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).

  • Method and apparatus for manufacturing electrostatically spun structure
    Patent number: 5024789
    Abstract: Electrostatic spinning method for producing tubular fibrous structures from fiberizable material wherein the fiberizable material is collected on an electrostatically charged mandrel wherein the fiberizable material takes different paths from the source to the mandrel to produce a structure of smaller diameter fibers randomly oriented, larger diameter fibers and/or bundles of fibers circumferentially oriented and elongated voids circumferentially oriented.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: June 18, 1991
    Assignees: Ethicon, Inc., The University of Liverpool
    Inventor: John P. Berry
  • Electrostatically produced structures and methods of manufacturing
    Patent number: 4965110
    Abstract: A tubular fibrous structure having smaller diameter fibers randomly oriented and larger diameter fibers and/or bundles of fibers circumferentially oriented. The structure includes elongated voids also generally circumferentially oriented.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: October 23, 1990
    Assignees: Ethicon, Inc., The University of Liverpool
    Inventor: John P. Berry
  • Method of manufacturing synthetic vascular grafts
    Patent number: 4883453
    Abstract: An aorto-coronary bypass graft comprising a plate portion and at least one tube portion extending from the plate portion, the opening in the tube portion communicating with a corresponding opening in the plate portion.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: November 28, 1989
    Assignees: Ethicoh Inc., The University of Liverpool
    Inventors: John P. Berry, David Annis
  • Apparatus for producing fibrous structures electrostatically
    Patent number: 4842505
    Abstract: Apparatus for producing a fibrous structure including electrostatically charged mandrels arranged around a delivery assembly for fiberizable material. The delivery assembly includes capillary needles to which fiberizable material is supplied from a reservoir, the needles being arranged on manifolds moved continuously around a loop path on a rail.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: June 27, 1989
    Assignees: Ethicon, University of Liverpool
    Inventors: David Annis, John P. Berry