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:
Dec. 04, 1990
Filed:
Mar. 06, 1989
Yoshinori Suto, Ibaraki, JP;
Hideyuki Nakajima, Ibaraki, JP;
Toshiyuki Ito, Ibaraki, JP;
Sanji Arisawa, Tokyo, JP;
Petoca, Ltd., Tokyoto, JP;
Arisawa Mfg. Co., Ltd., Joetsushi, JP;
Abstract
Three dimensional woven fabrics containing bent parts of a small radius of curvature which bent parts comprise easily graphitized pitch-derived carbon fibers obtained by thermosetting treatment and light carbonization treatment carried out after melt-spinning of high softening point pitch and having a tensile strength of 15 250 Kgf/mm.sup.2, an elongation of 0.5-8.0% and modulus of elasticity of 400-40,000 Kgf/mm.sup.2 and a capability of increasing both of their tensile strength and modulus of elasticity to 1.1 times or greater than the above-mentioned values by additional heat treatment carried out under a relaxed state to have a tensile strength of 150 Kgf/mm.sup.2 or greater and a modulus of elasticity of 40,000 Kgf/mm.sup.2 or greater. They are superior in abrasion resistance, flexion-resisting property and scratch-resisting property and useful as one component of fiber composite materials in reinforcing plastics, metals, cements, ceramics, carbon materials, etc.