Patents by Inventor Mika Muroi

Mika Muroi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pitch based carbon fibers
    Patent number: 6303096
    Abstract: Pitch based carbon fiber wherein the spread La of graphite crystallites constituting a fiber in the direction of layer plane is 1000 angstroms or less; the orientation angle &PSgr; in the direction of fiber axis is 10° or less, and the following relationship formulas (1) and (2) are satisfied: 0.70La−46&PSgr;>50  (1) 0.55La−76&PSgr;<500  (2).
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: October 16, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Iwao Yamamoto, Toshihiro Fukagawa, Akihiko Yoshiya, Mika Muroi