Patents by Inventor Hiromichi Ohtaki

Hiromichi Ohtaki 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).

  • Multilayer structural body and method for cleaning the same
    Publication number: 20090133713
    Abstract: It has been difficult to provide a large-sized ceramic member quickly and economically. A multilayer structure is produced by forming a ceramic film on a base which is made of a material that can be shaped comparatively easily. The ceramic film is formed by a plasma spraying method, CVD method, PVD method, sol-gel method or the like. Alternatively, the ceramic film may be formed by a method combined with a spray deposit film.
    Type: Application
    Filed: July 12, 2006
    Publication date: May 28, 2009
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Hitoshi Morinaga, Yukio Kishi, Hiromichi Ohtaki, Yoshihumi Tsutai
  • Cleaning method of ceramic member
    Patent number: 6863740
    Abstract: Disclosed is a cleaning method of a ceramic member, which permits removing with a high accuracy the contaminants from a ceramic member contaminated with the contaminant. The cleaning method comprises the steps of processing the contaminated ceramic member with an alkaline chemical liquid having a pH value not smaller than 10 in the presence of an ultrasonic wave, processing the ceramic member processed with the alkaline chemical liquid with a prescribed acidic chemical liquid in the presence of an ultrasonic wave, and heating the ceramic member processed with the acidic chemical liquid under temperatures not lower than 1,000° C.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: March 8, 2005
    Assignee: Nihon Ceratec Co., Ltd.
    Inventors: Shirou Moriyama, Hiroshi Hatakeyama, Hiromichi Ohtaki
  • Cleaning method of ceramic member
    Publication number: 20040231705
    Abstract: Disclosed is a cleaning method of a ceramic member, which permits removing with a high accuracy the contaminants from a ceramic member contaminated with the contaminant. The cleaning method comprises the steps of processing the contaminated ceramic member with an alkaline chemical liquid having a pH value not smaller than 10 in the presence of an ultrasonic wave, processing the ceramic member processed with the alkaline chemical liquid with a prescribed acidic chemical liquid in the presence of an ultrasonic wave, and heating the ceramic member processed with the acidic chemical liquid under temperatures not lower than 1,000° C.
    Type: Application
    Filed: May 20, 2004
    Publication date: November 25, 2004
    Applicant: NIHON CERATEC CO., LTD.
    Inventors: Shirou Moriyama, Hiroshi Hatakeyama, Hiromichi Ohtaki
  • Microwave sintering furnace and microwave sintering method
    Publication number: 20030071037
    Abstract: A microwave sintering furnace and a microwave sintering method are disclosed, in which the object to be sintered develops no cracking or deformation in the degreasing process. A microwave sintering furnace (1) comprises a furnace body (2) containing an object (S) to be sintered, a unit (3, 4) for generating and introducing microwaves into the furnace body, a unit (8) for supplying a degreasing gas into the furnace body (2), and a unit (11) for heating the degreasing gas before it reaches the object (S) to be sintered.
    Type: Application
    Filed: September 4, 2002
    Publication date: April 17, 2003
    Inventors: Motoyasu Sato, Sadatsugu Takayama, Masatoshi Mizuno, Kazunari Okumura, Akira Kagohashi, Akira Nishio, Toshio Sato, Hiroyuki Matsuo, Hiromichi Ohtaki, Yukio Kishi