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:
Oct. 10, 1995
Filed:
Aug. 11, 1994
Yoshio Hagiwara, Tokyo, JP;
Isao Satoh, Kanagawa, JP;
Hatsuyuki Tanaka, Kanagawa, JP;
Toshimasa Nakayama, Kanagawa, JP;
Tokyo Ohka Kogyo Co., Ltd., , JP;
Abstract
Proposed is an aqueous coating composition based on a polyvinyl alcohol suitable for use to provide a protective film on various electronic materials. The composition comprises, as dissolved in water, a partially saponified polyvinyl alcohol having a specified average degree of polymerization and a specified degree of saponification, a fluorine-containing surface active agent and, optionally, a quaternary ammonium hydroxide. The liquid coating composition is preferably freed from sodium ions as an impurity by an ion-exchange treatment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile