Patents by Inventor Heinz Staab

Heinz Staab 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).

  • Cyclically substituted fulvalenophanes
    Patent number: 4298751
    Abstract: Cyclically substituted fulvalenophanes of the formula ##STR1## where X is S, Se or Te, R is H or lower alkyl, A is --(CH.sub.2).sub.n --and Z is a radical of the formula ##STR2## a p-phenylene radical or a quinodimethane radical of the formula ##STR3## where the radicals R.sup.2 and R.sup.3 are halogen, carboxylic acid ester groups or cyano and R.sup.3 may also be hydrogen, and the quinodimethane ring may be substituted by halogen, nitro or cyano.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: November 3, 1981
    Assignee: Basf Aktiengesellschaft
    Inventors: Heinz Staab, Joachim Ippen