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:
Nov. 04, 1980
Filed:
Jun. 08, 1979
Applicant:
Inventors:
Teruo Matsuda, Niihama, JP;
Tetsuo Murata, Niihama, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568433 ;
Abstract
Salicylaldehydes useful for perfumes, agricultural chemicals, chelating agents and the like are produced in high yield with high selectivity by reacting formaldehyde or its derivative with a corresponding phenol in a solvent using as a catalyst chromium or iron compounds.