Patents by Inventor Maria E. Schindler, heir-at-law

Maria E. Schindler, heir-at-law 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).

  • Manufacture of arylacetic acids and their esters
    Patent number: 4424394
    Abstract: Arylacetic acids and their esters, of the formula Ar(CH.sub.2 -COOR).sub.n (where Ar=aryl, R is H or a hydrocarbon radical, and n is 1 or 2) are manufactured by carbonylation of halomethylaryl compounds Ar(CH.sub.2 C).sub.n (where X is Cl, Br or I) with carbon monoxide and a catalyst m.sup.+ ?Fe(O).sub.3 NO!.sup.- (where M is an alkali metal, ammonium or one equivalent of an alkaline earth metal) in the presence of stoichiometric amounts of an inorganic base or of an alcoholate of an alcohol ROH.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: January 3, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Schneider, Rudolf Kummer, Kurt Schwirten, Hans-Dieter Schindler, deceased, Maria E. Schindler, heir-at-law, Ute Lang, heir-at-law, Rainer Schindler, heir-at-law