Patents by Inventor David A. Delson

David A. Delson 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).

  • Patent number: 5513654
    Abstract: The disclosed sheath-like contraceptive condom, even in a rolled-up condition suitable for packaging or use, has a high coefficient of friction on the surface that comes into contact with penile skin, particularly the portion of this surface contacting the glans and preferably also the shaft of the penis. The outer surface of the rolled condom, on the other hand, preferably has anti-blocking or release properties, so that it can be rolled up and unrolled without difficulty. The high coefficient of static friction (>0.70, preferably > about 1.0, according to ASTM Designation D 1894-90) on the interior surface provides reliable frictional engagement of at least the glans and preferably also the shaft of the penis, so that the condom clings to the contours of the penis and resists slippage during intercourse.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: May 7, 1996
    Assignee: New Designs Corporation
    Inventor: David A. Delson