Patents by Inventor Heinz-Gunter Oeser

Heinz-Gunter Oeser 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).

  • Preparation of 2-(hydroxyphenoxy)-carboxylates
    Patent number: 4489207
    Abstract: 2-(Hydroxyphenoxy)-carboxylates are prepared by a process wherein a dihydroxybenzene (A) is reacted with a 2-halo-fatty acid ester (B) of an alcohol, phenol or oxime of no more than 10 carbon atoms, in a molar ratio of A:B.gtoreq.1.5, in the presence of calcium hydroxide in dimethylsulfoxide, at from 0.degree. to 100.degree. C.
    Type: Grant
    Filed: December 16, 1982
    Date of Patent: December 18, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Becker, Heinz-Gunter Oeser, Rolf-Dieter Acker