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:
Apr. 02, 1985
Filed:
Jun. 23, 1983
Masaharu Sakuta, Tokyo, JP;
Soichi Kiya, Hachioji, JP;
Iwao Uchizaki, Tokyo, JP;
Yasuhiko Yoshioka, Mitaka, JP;
Koichi Ito, Tokyo, JP;
Tadahiro Kaya, Kanagawa, JP;
Tsunetoshi Shioya, Fujisawa, JP;
Yoshifumi Shimoyama, Fujisawa, JP;
Hiroyuki Yamakawa, Yamato, JP;
Takenaka Komuten Co., Ltd., Osaka, JP;
Takenaka Doboku Co., Ltd., Tokyo, JP;
Sankyo Chemical Industries Ltd., Tokyo, JP;
Abstract
A cement composition is provided which has the property of being inseparable in water, having improved strength and no effect in delaying setting time or reducing strength. It is produced at a cheaper cost by reducing the amount of a polyacrylamide compound to a considerable great extent. The polyacrylamide compound is present in an amount of 0.1 to 3% by weight based on the weight of cement, when a dialdehyde is added thereto.