Patents by Inventor Shlomo Yitzchaik

Shlomo Yitzchaik 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).

  • Photochromic spirooxazine monomers and polysiloxanes
    Patent number: 5322945
    Abstract: A method of making a photochromic polysiloxane includes the steps of forming a photochromic spironaphthooxazine monomer including an alkene terminated side and, by addition reaction, covalently bonding the alkene carbon to [SiH] moieties of a siloxane polymer. Novel spironaphthooxazine monomers and photochromic polysiloxanes are disclosed.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: June 21, 1994
    Assignee: Yeda Research and Development Co. Ltd.
    Inventors: Valeri Krongauz, Frida Buchhultz, Alexander Zelichenok, Shlomo Yitzchaik