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:
Feb. 09, 1982
Filed:
May. 14, 1980
Seiichi Ozawa, Tokyo, JP;
Ozawa Concrete Industry Co., Ltd., Tokyo, JP;
Abstract
A polymer-impregnated concrete product is obtained by placing a concrete mix in a frame capable of withstanding high temperature and high pressure in such a manner as to form therein a hollow portion, molding the concrete mix to obtain a concrete article containing a hollow portion therein, causing the concrete article as held in a tightly closed state in the frame to be cured by application of heat, subjecting the concrete article, as retained in the frame, to treatments for drying and deaeration, then supplying a monomer preparation to the hollow portion of the concrete article, applying pressure to bear upon the concrete article thereby causing the monomer preparation to be diffused into the fine voids in the concrete article, and heating the concrete article in situ thereby allowing the diffused monomer to be polymerized.