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:
May. 27, 1980
Filed:
Oct. 22, 1975
Tsuyoshi Aoyama, Hoya, JP;
Yoshimasa Hayashi, Tokyo, JP;
Hirotaka Toba, Yokohama, JP;
Akira Yoshida, Himji, JP;
Kenji Goto, Kawanishi, JP;
Motoaki Kawakama, Chiba, JP;
Ohbayashi-Gumi, Ltd., Osaka, JP;
Daicel Ltd., Osaka, JP;
Fujisawa Pharmaceutical Co., Ltd., Osaka, JP;
Abstract
An exposed aggregate finishing method for concrete. The method comprises coating the inside faces of a form for concrete with a cement setting retarder, drying, coating the dried faces with a synthetic organic polymer coating material which is soluble in an aqueous alkaline solution of cement, but is insoluble in water; and drying the coated faces. Alternatively, the method may be carried out by coating the inside faces of the form for concrete with the mixture of the cement setting retarder and the organic polymer coating material and drying the coated faces. Concrete is thereafter placed in the concrete form, the form removed and the surface of the molded concrete washed to make the surface rough.