Patents by Inventor Seigo Watanabe

Seigo Watanabe 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 producing catalysts for synthesis of unsaturated aldehydes and unsaturated carboxylic acids
    Patent number: 5349092
    Abstract: Disclosed is a process for producing a multicomponent catalyst containing molybdenum and bismuth and used for synthesis of unsaturated aldehydes and unsaturated carboxylic acids, characterized in that dried starting materials for the catalyst are calcinated in an atmosphere containing 1 vol % or more of a nitrogen oxide and 0.5 vol % or more of oxygen.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: September 20, 1994
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Seigo Watanabe, Motomu Oh-Kita
  • Machining method for the use of a complex machining machine tool
    Patent number: 5191817
    Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: March 9, 1993
    Assignee: Yamazaki Mazak Corporation
    Inventors: Hiroshi Kojima, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi, Shuichi Hashimoto, Choji Kato, Mikiro Teshigawara, Ryoichi Furuhashi, Shoji Momoi, Toshihiko Inoue, Kazuki Uemura, Katsushi Oshima
  • Workpiece support for a turret on a opposed spindle lathe
    Patent number: 5168609
    Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: December 8, 1992
    Assignee: Yamazaki Mazik Corp.
    Inventors: Hiroshi Kojima, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi
  • Opposed spindles lathe having tool rests movable in two different directions
    Patent number: 5157824
    Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: October 27, 1992
    Assignee: Yamazaki Mazak Corporation
    Inventors: Kojima Hiroshi, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi, Shuichi Hashimoto, Choji Kato, Mikiro Teshigawara, Ryoichi Furuhashi, Shoji Momoi, Toshihiko Inoue, Kazuki Uemura, Katsushi Oshima
  • Complex machining machine tool
    Patent number: 5095598
    Abstract: A complex machine tool has a single frame having a chip, collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: March 17, 1992
    Assignee: Yamazaki Mazak Corporation
    Inventors: Kojima Hiroshi, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi, Shuichi Hashimoto, Choji Kato, Mikiro Teshigawara, Ryoichi Furuhashi, Shoji Momoi, Toshihiko Inoue, Kazuki Uemura, Katsushi Oshima
  • Machining control apparatus in a machine tool
    Patent number: 5088361
    Abstract: A machine tool has first and second spindles provided so as to face each other. The first and the second spindles are synchronously rotated without stopping their rotation. A machined workpiece, after a first machining routine, in a state of rotation is directly delivered from the first spindle to the second spindle, and a second routine of machining is immediately performed.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: February 18, 1992
    Assignee: Yamazaki Mazak Kabushiki Kaisha
    Inventors: Hiroshi Kojima, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi
  • Machine tool machining method
    Patent number: 4949444
    Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: August 21, 1990
    Assignee: Yamazaki Mazak Corporation
    Inventors: Hiroshi Kojima, Keikichi Sakata, Seigo Watanabe, Yukio Mitsukuchi, Shuichi Hashimoto, Choji Kato, Mikiro Teshigawara, Ryoichi Furuhashi, Shoji Momoi, Toshihiko Inoue, Kazuki Uemura, Katsushi Oshima