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:
Aug. 16, 1994
Filed:
Nov. 02, 1990
Yoshikazu Kubota, Fujinomiya, JP;
Masayasu Kamijo, Fuji, JP;
Hiroshi Otsu, Aichi, JP;
Takashi Kamiya, Aichi, JP;
Kohjin Co., Ltd., Tokyo, JP;
Aica Kogyo Co., Ltd., Aichi, JP;
Abstract
A granitic stone ( so-called Mikage-ishi)-like artificial solid material produced by impregnating a paper sheet having a granitic pattern with a thermosetting resin to give a paper containing from 25 to 60% by weight of the resin at the dry basis; drying the resin-impregnated paper sheet; and hot-pressing a laminate comprising a plurality of the dried sheets; is claimed, said paper mainly comprising (A) from 20 to 80% by weight of cellulose pulp, (B) from 2 to 40% by weight of an artificial fiber, (C) from 10 to 70% by weight of an inorganic filler less than 10 .mu.m in average diameter, and (D) from 1 to 30% by weight of a fine-grained additive consisting of grains from 10 to 500 .mu.m in average diameter, having a color hue different from that of the inorganic filler (C). The artificial granite solid material has an excellent machinability, workability, and physical properties (strength), as well as good-looking textures (inorganic material like appearance, expressing by itself heaviness, hardness, and thickness; exhibits a very granitic look as a whole) with an ornamental and luxurious appearance.