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:
Sep. 11, 1990
Filed:
Nov. 02, 1987
Applicant:
Inventors:
Toshio Yonezawa, Tokyo, JP;
Takashi Iwashimizu, Osaka, JP;
Yasuhiko Yoshioka, Tokyo, JP;
Koichi Ito, Tokyo, JP;
Kunio Sakaue, Kyoto, JP;
Tetsuo Nakase, Kyoto, JP;
Assignees:
Takenaka Komuten Co., Ltd., Osaka, JP;
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524-5 ; 524560 ; 524599 ;
Abstract
A pressure water absorption inhibitor for lightweight aggregates which comprises an aqueous dispersion of a polymeric substance having a viscosity which permits the aqueous dispersion to enter the fine pores in the surface layer of a lightweight aggregate and which dispersion is capable of being thickened to a viscosity of not less than 50 times the viscosity before thickening by elevation of the pH.