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:
Nov. 05, 1991
Filed:
Feb. 16, 1990
Haruo Katsumata, Kitakyushu, JP;
Hiromichi Sakai, Kitakyushu, JP;
Keisuke Takahashi, Kitakyushu, JP;
Hirofumi Ootaguro, Kitakyushu, JP;
Masashi Matsumoto, Kitakyushu, JP;
Moriyasu Nakamura, Kitakyushu, JP;
Tatsuo Ando, Yokohama, JP;
Mitsubishi Kasei Corporation, Tokyo, JP;
Abstract
A carbon fiber-reinforced hydraulic composite material having excellent mechanical strength, workability, and freezing-and-thawing resistance, wherein chopped carbon fibers having a monofilament tensile strength of from 140 kg/mm.sup.2 to 270 kg/mm.sup.2, and a monofilament diameter of from 15 .mu.m to 30 .mu.m are blended as the carbon fibers at a ratio of from 1% to 4% by volume with respect to the entire composite material to bring a flow index of the composite material before its hardening to 120 mm or above.