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:
Jun. 08, 1976
Filed:
Jul. 18, 1975
Applicant:
Inventors:
Rudolph Rosenthal, Broomall, PA (US);
John G Zajacek, Devon, PA (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
Method for the production of isocyanates from esters of carbamic acids, (urethanes) by thermally decomposing the ester of the carbamic acid while said ester is dissolved in a suitable inert solvent to produce the isocyanate and alcohol and separately recovering the isocyanate and alcohol.