Patents by Inventor Martin C. Grossel

Martin C. Grossel 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).

  • Protected developing agents
    Patent number: 4560646
    Abstract: Compounds of the formula ##STR1## wherein L is a direct bond or consists of a chain of carbon atoms or of a divalent ring system, R.sub.1 to R.sub.4 are hydrogen or alkyl, R.sub.5 or R.sub.6 are hydrogen, alkyl or aryl, or R.sub.5 together with R.sub.6 complete a ring system, and R.sub.7 is hydrogen or a group of the formula ##STR2## wherein L, R.sub.5 and R.sub.6 are as defined. These compounds are useful developing agents for activation processing.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: December 24, 1985
    Assignee: Ciba Geigy AG
    Inventors: William E. Long, Norman A. Smith, Terence C. Webb, Stephen R. Postle, Kenneth M. McCombe, Martin C. Grossel