Patents by Inventor Hanspeter Stricker

Hanspeter Stricker 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).

  • Substituted naphthalocyanines and their use
    Patent number: 5229507
    Abstract: Compounds of the formula I ##STR1## in which R is the group --OC.sub.m H.sub.2mn R.sub.1 and M is two H or is Cu or Ni, R.sub.1 is --OH, --Cl, --Br, C.sub.1 -C.sub.30 alkoxy or --OC(O)R.sub.2, m is an integer from 2 to 6 and n is a number from 1 to 20, and R.sub.2 is C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, cyclopentyl, cyclohexyl or C.sub.6 -C.sub.10 aryl or C.sub.6 -C.sub.10 arylmethyl which is unsubstituted or substituted by C.sub.1 -C.sub.18 alkyl.The compounds are dyes and IR absorbers and can be used for optical information storage systems employing diode lasers.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: July 20, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Marcus Baumann, Hanspeter Stricker, Walter Fischer, Jurgen Vogt, Jin Mizuguchi