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:
Aug. 22, 1995
Filed:
Sep. 14, 1993
Isamu Ichizuka, Tokyo, JP;
Shuitsu Takahashi, Tokyo, JP;
Kouzi Hara, Tokyo, JP;
Hiroshi Waki, Tokyo, JP;
Shinji Kobe, Tokyo, JP;
Tadayuki Sakurada, Tokyo, JP;
Yoshitaka Okouchi, Tokyo, JP;
Ken Ohkubo, Tokyo, JP;
Hiroshi Shimizu, Tokyo, JP;
Asahi Denka Kogyo Kabushiki Kaisha, Tokyo, JP;
Riken Vinyl Industry Co., Ltd., Tokyo, JP;
Abstract
A water-sealing sheet comprising a water-swelling resin obtained by kneading together 10 to 97% by weight of a non-water-swelling thermoplastic resin, preferably vinyl chloride resin, containing 80 to 200 parts by weight of a plasticizer based on 100 parts by weight of the non-waterswelling thermoplastic resin, and 3 to 90% by weight of a water-swelling urethane resin. The urethane resin is a prepolymer having isocyanate groups in which the content of terminal NCO groups amounts to 1 to 12%, preferably 2 to 7%, obtained by the reaction of polyisocyanate with at least one polyether polyol of the formula
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile