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. 18, 1990
Filed:
Apr. 01, 1988
Applicant:
Inventors:
Robert A Koster, Midland, MI (US);
Philip J Brondsema, Midland, MI (US);
Willis J Pennington, Midland, MI (US);
William C Sumner, Midland, MI (US);
Susan E Vilmer, Grapevine, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568734 ; 568731 ; 568743 ; 568744 ;
Abstract
Ortho-aromatic diaryl ethers, such as o-biphenylyl phenyl ether, are hydrolyzed to corresponding phenolic compounds, such as o-phenylphenol and phenol, when contacted with water in the presence of ceria or thoria at a temperature of between about 250.degree. C. and 700.degree. C.
Quick Actions:
Koster, Robert. (1990). Process for hydrolysis of ortho-aromatic di-aryl ethers (U.S. Patent No. 4978811). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4978811
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile