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. 03, 1990
Filed:
Jul. 24, 1987
Haruyuki Ito, Kitakyushu, JP;
Akio Matsumoto, Kitakyushu, JP;
Toto Ltd., Kitakyushu, JP;
Abstract
A method of making a porous mold for pressure slip casting. A surface porous layer is cast which has an average pore diameter of at most 20 microns and a thickness of 5 to 40 mm. An adhesive is applied in a pattern to the rear surface of the surface porous layer to leave an unapplied portion on the rear surface. A coarse porous layer is applied to the adhesive applied and unapplied portions of the rear surface of the surface porous layer which is made of a mixture of liquid resin and a filler of a particle diameter of 0.1 to 5.0 mm at a volume ratio of 15 to 50:100. The coarse porous layer has a thickness of 5 to 30 mm. A sealing adhesive is applied to the surface of the coarse porous layer and means is applied for passage of water from and air into the coarse porous layer.