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:
Jul. 02, 2002
Filed:
Feb. 11, 2000
Applicant:
Inventor:
Takaharu Akedo, Otsu, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 5/968 ; C08G 6/510 ; C07C 4/313 ;
U.S. Cl.
CPC ...
C08G 5/968 ; C08G 6/510 ; C07C 4/313 ;
Abstract
Provided is a process for producing a tetrahydrofuran polymer using a heteropoly-acid catalyst wherein the content of Al in the heteropoly-acid is 4 ppm or less.
Akedo, Takaharu. (2002). Process for producing tetrahydrofuran polymer (U.S. Patent No. 6414109). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6414109
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile