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. 22, 2017
Filed:
Apr. 12, 2013
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Tadanobu Ikeda, Otake, JP;
Tadao Samejima, Toyohashi, JP;
Youji Hatanaka, Otake, JP;
Tetsu Yasunami, Toyohashi, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A carbon-fiber-precursor acrylic fiber bundle which can smoothly pass through a flame-resistance impartation step and a carbonization step. The carbon-fiber-precursor acrylic fiber bundle has a high-density part as a portion thereof, wherein the high-density part satisfies the following requirements (A) and (B). Requirement A: The high-density part has a maximum fiber density ρof 1.33 g/cmor higher. Requirement B: The portion extending between an intermediate-density point and a maximum-density-region arrival point has an increase in fiber density of 1.3×10g/cmor less per 10 mm of the fiber bundle length.