Patents by Inventor Yitzchak Kenigsberg

Yitzchak Kenigsberg 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).

  • process for treating a porous substrate to achieve improved water and oil repellency
    Patent number: 5156780
    Abstract: Oil and water repellency is conferred upon porous substrates (10) by treatment with a solution of a monomer (16) of the formula: (C.sub.n E.sub.2n+1)(CH.sub.2).sub.x (CHR)OCOCH.dbd.CH.sub.2 where n is an integer; X is 0,1,2 or 3 and R is H or CH.sub.2 --OCOCH.dbd.CH.sub.2. The monomer is polymerized in situ upon the substrate to provide a conformal coating (16') which preserves the porous structure.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: October 20, 1992
    Assignee: Gelman Sciences Inc.
    Inventors: Yitzchak Kenigsberg, Ehud Shchori
  • Package for preservative agent
    Patent number: 5120585
    Abstract: A gas permeable package for a preservative agent is fabricated from a material which includes a support having pores therein sufficiently large to permit passage of gas therethrough but small enough to retain a preservative agent. There is a conformal, hydrophobic and oleophobic coating on the porous support member. The coating includes a fluoroacrylate based polymer.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: June 9, 1992
    Assignee: Gelman Sciences Technology, Inc.
    Inventors: Mark Sutter, Yitzchak Kenigsberg, Ehud Shchori