The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1993
Filed:
Sep. 23, 1992
Applicant:
Inventors:
Wolfgang Herrman, Freising, DE;
Christian Kohlpaintner, Stephanskirchen, DE;
Helmut Bahrmann, Hamminkelm, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
562 35 ;
Abstract
The preparation of water-soluble diphosphines derived from biaryl compounds by reaction with a solution of SO.sub.3 in sulfuric acid.