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:
Mar. 25, 1986
Filed:
Aug. 05, 1985
Nobuo Ishikawa, Yokohama, JP;
Mitsuru Takahashi, Tokyo, JP;
Daikin Kogyo Co., Ltd., Yamaguchi, JP;
Toyo Soda Manufacturing Co., Ltd., Osaka, JP;
Abstract
A process for preparing a perfluorinated or polyfluorinated aliphatic carboxylic acids wherein a perfluorinated or polyfluorinated aliphatic halide of the formula: R.sub.f X where R.sub.f is a perfluorinated or polyfluorinated aliphatic group and X is a halogen atom is reacted with carbon dioxide in the presence of metal under the irradiation of ultrasound and the reaction product is hydrolyzed to form a perfluorinated or polyfluorinated aliphatic carboxylic acid of the formula: R.sub.f COOH where R.sub.f is the same as defined above.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile