Patents by Inventor Jacob Tolsma

Jacob Tolsma 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).

  • Polymer fabric compacting process
    Patent number: 3986828
    Abstract: Polyester fabric which may be in the form of a warp-knitted lock-stitched or tricot-stitched tubular construction is compacted by treatment with NO.sub.2 either in the gaseous phase or in solution. The product, after neutralization, washing and crimping is suitable for vascular prostheses. In one form, the compacted product is crimped and bifurcated. Shrinkage in both the longitudinal and transverse directions is at least 30%. The porosity of the fabric is reduced by the compacting treatment.
    Type: Grant
    Filed: March 5, 1974
    Date of Patent: October 19, 1976
    Assignee: Meadox Medicals, Inc.
    Inventors: Harmon L. Hoffman, Jr., Jacob Tolsma