Patents by Inventor Hirofumi Takeda

Hirofumi Takeda 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).

  • Patent number: 4477740
    Abstract: An emitter-coupled logic circuit device comprises first and second voltage supply lines connected, respectively, to ground and an external voltage source, a third voltage supply line, having a potential between that of the first and second voltage supply lines, an output buffer circuit connected between the first and third voltage supply lines, and an inner gate circuit connected between the third and second voltage supply lines. The current flowing through the output buffer circuit also flows through said inner gate circuit.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: October 16, 1984
    Assignee: Fujitsu Limited
    Inventor: Hirofumi Takeda
  • Patent number: 4400418
    Abstract: A cylindrical covering fabric for a damping form roller of an offset printing machine is manufactured by weaving, as ground yarn, yarns composed of polyurethane fibers drafted to at least twice of free length, water-soluble fibers and water-insoluble fibers coiling around the above-mentioned polyurethane fiber and water-soluble fiber and, as pile yarn, hydrophilic fibers. The covering fabric is firmly mounted on a damping form roller by immersing the roller covered by the fabric in water to remove the water-soluble fibers from the ground yarns, followed by shrinking of the polyurethane fibers.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: August 23, 1983
    Assignee: M.M.T. Inc.
    Inventors: Hirofumi Takeda, Hirobumi Suzuki
  • Patent number: 4321335
    Abstract: A powder coating resin composition comprising (A) a phosphorus-containing vinyl polymer containing a curable functional group and having a softening point, determined by the ring and ball method, of 70.degree. to 150.degree. C. and a number average molecular weight of 1500 to 30000, and (B) a curing agent.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: March 23, 1982
    Assignee: Dainippon Ink & Chemicals, Inc.
    Inventors: Shunji Arimoto, Akio Shoji, Shoichiro Takezawa, Noboru Ishikawa, Hirofumi Takeda