Patents by Inventor Mitsuaki Murakami

Mitsuaki Murakami 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).

  • Process for production of aluminum hydroxide from ore containing alumina
    Patent number: 5545384
    Abstract: A process for the production of aluminum hydroxide from an alumina-containing ore comprising, in a process for the production of aluminum hydroxide involving extraction of alumina from an alumina-containing ore by an aqueous alkaline solution, supplying a slurry containing the alumina-containing ore at a high solid content which is prepared from a small amount of an alkaline solution together with an aqueous alkaline solution which is so preheated to a temperature that a preheated temperature is enough high to have a temperature after the mixing with the slurry which is higher than an extraction temperature of alumina, simultaneously or after the mixing them, to an extraction apparatus comprising of a tube reactor, extracting alumina from the alumina-containing ore under extraction conditions of a temperature of 120.degree.-160.degree. C.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 13, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takuo Harato, Takahiro Ishida, Yoshio Kumagae, Michikazu Inami, Kazuhisa Ishibashi, Mitsuaki Murakami
  • Magnetic recording editing apparatus with erase head
    Patent number: 4737865
    Abstract: A helical scan type video tape recorder (VTR) having an editing function mode in which a new video signal can be inserted between a cut-in point and cut-out point on a previously recorded on a video tape.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: April 12, 1988
    Assignee: Sony Corporation
    Inventors: Mitsuaki Murakami, Yoshiaki Ohgawara