Patents by Inventor Hisanobu Tanaka

Hisanobu Tanaka 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: 5331302
    Abstract: A miniature transfer relay has a base mounting a contact assembly and an electromagnet. The contact assembly includes a normally-open (NO) fixed contact, a normally-closed (NC) fixed contact, a common conductor, and a movable spring extending from the common conductor and carrying first and second movable contacts engageable respectively with the NO and NC contacts. The electromagnet block includes an armature which is movable between set and reset positions and is connected to the movable spring for making and breaking the NO and NC contacts simultaneously in response to the armature movement. The NO fixed contact and the common conductor are molded in an upper surface of the base, while the NC fixed contacts has a portion molded in the base.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: July 19, 1994
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Takashi Yoshimura, Takayasu Ishizuka, Masayui Shiomi, Tomoyoshi Hayashi, Hiroaki Aihoshi, Hisanobu Tanaka
  • Patent number: 5273579
    Abstract: The present invention concerns a quick setting composition capable of obtaining satisfactory strength developability irrespective of the fluctuation of the ingredients in a metallurgical slag, excellent in the strength developability at cold temperature, easy for coagulation control and inexpensive as well, which contains a cement ingredient comprising portland cement and/or mixed cement, 2 to 50% by weight at the integral ratio of a quick setting agent prepared by adding 3 to 20% by weight of an alkali carbonate at an internal ratio to a mixture comprising 40 to 95% by weight of a finely powdery metallurgical slag and 5 to 60% by weight of II-type anhydrous gypsum, based on the cement ingredient, and 0.1 to 5% by weight of a coagulation controlling agent comprising an organic acid type coagulation retarder and an alkali sulfate and/or calcium salt based on the total weight of the cement ingredient and the quick setting ingredient.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: December 28, 1993
    Assignee: Mitsubishi Mining and Cement Co., Ltd.
    Inventors: Yoshio Tanaka, Tetsuro Tsutsumi, Keiji Saito, Hisanobu Tanaka