Patents by Inventor Takefumi Ito

Takefumi Ito 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).

  • Publication number: 20030022059
    Abstract: A simplified, pressure-variation preventing tank structure capable of preventing pressure variations in a gas phase portion resulting from temperature variations, without bringing stored liquid into contact with air.
    Type: Application
    Filed: August 26, 2002
    Publication date: January 30, 2003
    Inventors: Takefumi Ito, Nobuyuki Tokuda
  • Patent number: 5437921
    Abstract: A base material for mounting electronic components is provided which has a low density and a coefficient of thermal expansion close to that of aluminum and can be processed with ease. The base material essentially consists of aluminum or an aluminum alloy reinforced with carbon fibers with a volume fraction ranging from 0.15 to 0.55, the carbon fibers in the base material being arranged at random on a surface for mounting an electronic component and being arranged in layer in a direction vertical to the above-described surface.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: August 1, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuo Kogo, Takefumi Ito, Mitsuhiro Okumura, Kiyoshi Yoshizaki, Takeji Fujihara, Hirofumi Yamashita
  • Patent number: 5019185
    Abstract: A high strength Cu-Ni-Sn alloy, comprising 3-25% Ni, 3-9% Sn, 0.05-1.5% Mn, balance Cu, is heated to a temperature of C. or above in a single-phase region. This heat treatment is followed by quenching and subsequent heating at a temperature range of C. in a two-phase region, followed by quenching and a finishing process with a ratio of 0-60%. Thereafter, the processed alloy is subjected to a final heat-treatment at a temperature of C.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: May 28, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Nakajima, Kenji Kubozono, Toshihiko Mori, Takefumi Ito, Kimio Hashitsume, Shinichi Iwase
  • Patent number: 4505397
    Abstract: An apparatus for hoisting materials and placing concrete, having a non-rotating mast and a boom which is swingable horizontally and vertically, and consists of boom segments pin-jointed together in line so as to be foldable only downwardly. A line of concrete transport piping extends from the base end of the boom to the free end thereof, and a line of hoisting sling extends from the base end of the boom to the free end, hangs down to hold a load handling block, rises up and extends back to the base end, each such line being supported alongside of the boom. In service for hoisting materials, the boom is stretched and fixed at each pin-jointed connection for reinforcement by releasable pin-fastening members, whereas in service for concrete placing, the hoisting sling is raised up and seized in place to avoid interference. The apparatus is remotely controllable.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: March 19, 1985
    Assignee: Takenaka Komuten Co., Ltd.
    Inventors: Sakichi Isogai, Teruo Mizuhata, Masaaki Takahashi, Takayoshi Imai, Kazuyoshi Nakanishi, Takefumi Ito, Atsuo Koshihara
  • Patent number: 4190372
    Abstract: Sludge deposit is stored in a sludge deposit receiving hopper, and the stored sludge deposit is fed onto a belt conveyor and transferred to a mixer. A hardener is fed to this mixer from a hardener hopper. A conveyor belt is disposed on the belt conveyor to measure the quantity of the sludge deposit transferred by the belt conveyor. According to this measured value of the transferred sludge deposit, the quantity of the sludge deposit fed from the sludge deposit receiving hopper and the quantity of the hardener fed from the hardener hopper are controlled. The sludge deposit is mixed and kneaded with the hardener, and the sludge deposit is solidified.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: February 26, 1980
    Assignee: Takenaka Komuten Co., Inc.
    Inventors: Atsushi Takagi, Hiroyuki Kuroiwa, Mitsuo Miura, Teruo Mizuhata, Takefumi Ito, Masao Miyaguchi, Tateo Kawamura