Patents by Inventor Peter Burg

Peter Burg 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).

  • Process for preparing aromatic aldehydes
    Patent number: 5347054
    Abstract: A process for preparing aromatic aldehydes of the formula (1) ##STR1## in which R.sup.1, R.sup.2, R.sup.3 independently of one another are H, F, Cl or Br, by hydrolyzing a dichloromethyl-substituted benzene of the formula (2) ##STR2## in which R.sup.1, R.sup.2, R.sup.3 have the abovementioned meanings with a from about 1 to about 50% strength aqueous solution of one or more zinc salts of the formula (3)ZnX.sub.n (3)in which X is F, Cl, Br, I, OH or SO.sub.4, and n is, depending on the anion X, the number 1 or 2, at temperatures of from about 70.degree. to about 160.degree. C.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: September 13, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gilbert Billeb, Peter Burg