Patents by Inventor Takayoshi Shimizu

Takayoshi Shimizu 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: 20020027305
    Abstract: A polarizable electrode (1) comprises an activated carbon/carbon composite cosisting essentially of an activated carbon component and a carbon component. The activated carbon component comprises activated carbon powder or fiber. The carbon component is produced by carbonizing a thermosetting resin. The composite has a density within a range between 0.70 and 0.85 g/cm3, both inclusive, and a thickness within another range between 0.7 and 3.0 cm, both inclusive.
    Type: Application
    Filed: August 13, 2001
    Publication date: March 7, 2002
    Applicant: NEC Corporation
    Inventors: Yukari Kibi, Takashi Saito, Shinobu Takagi, Takayoshi Shimizu
  • Publication number: 20010029587
    Abstract: An electronic system comprising a master device and a slave device which are interconnected via a suitable data bus, which have an independent power supply input each, and which exchange data therebetween. Upon judging the slave device to have been switched off, the master device turns off its own power supply in synchronism with the deactivated slave device.
    Type: Application
    Filed: February 21, 2001
    Publication date: October 11, 2001
    Applicant: SONY CORPORATION
    Inventors: Yoshiaki Takenaka, Takuro Noda, Yoshiyuki Takaku, Takayoshi Shimizu
  • Patent number: 6149706
    Abstract: A corrosion resistant sintered body having excellent ductility is provided by sintering, at temperatures of not less than 1050 to less than 1300.degree. C., powders which are composed by adding metal compound of B to and mixing with powders of ferrite stainless steel containing C.ltoreq.0.1 wt %, Si.ltoreq.3.0 wt %, Mn.ltoreq.0.30 wt %, Ni.ltoreq.2.0%, 11 wt %.ltoreq.Cr.ltoreq.22 wt %, Mo.ltoreq.3.0%, and the rest being substantially Fe, at an amount of B in the mixed powders being between more than 0.03 wt % and less than 0.2 wt % based on the weight of the powder.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: November 21, 2000
    Assignees: Daido Tokushuko Kabushiki Kaisha, Sumitomo Electric Industries, Ltd.
    Inventors: Takayoshi Shimizu, Tetsuya Kondoh
  • Patent number: 6110252
    Abstract: Powder is composed of ferrite stainless steel containing: C: .ltoreq.0.1 wt %, Si: .ltoreq.3.0 wt %, Mn: .ltoreq.0.30 wt %, Ni: .ltoreq.2.0 wt %, Cr: 11 to 22%, Mo: .ltoreq.3.0 wt %, and the rest being substantially Fe. The metal compound of B, preferably CrB, is added to the powder as the amount of B being between more than 0.03 wt % and less than 0.2 wt % based on the amount of the powder.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: August 29, 2000
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Takayoshi Shimizu, Tetsuya Kondoh
  • Patent number: 5281176
    Abstract: A contact member according to the invention effectively controls the production of sparks even at a high current, has a simple structure and is appropriate for use as a small contact brush as in a micromotor. A method of manufacturing a strip material for producing the contact member, the strip material being provided with a surface metal layer having a desired configuration which can be easily manufactured continuously, precisely and in large quantities with a high yield of contact members. Each of the contact members comprises a metal base plate and a sintered metal layer formed on a surface of the metal base plate. The contact member is cut from the strip material, which is manufactured by first printing a metal paste on desired positions on a metal base strip and then sintering the metal paste. The sintered metal layer is firmly joined to the metal base strip by diffusion bonding.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: January 25, 1994
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Shinichiro Yahagi, Keisuke Awazu, Osamu Kato, Takayoshi Shimizu, Tamotsu Nishinakagawa
  • Patent number: 4751682
    Abstract: A sense circuit for sensing a memory state of a memory transistor in a semiconductor memory device by determining whether the memory transistor is on or off is provided. The sense circuit includes a first load P-channel MOS transistor for supplying a first current to the memory transistor, a reference transistor capable of passing a second current same in magnitude as the on current of the memory transistor, and a second load P-channel MOS transistor for supplying the second current to the reference transistor, whereby the second load P-channel MOS transistor is operatively coupled to the first load P-channel MOS transistor.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: June 14, 1988
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeki Matsuoka, Takayoshi Shimizu, Takao Jinzai
  • Patent number: 4340424
    Abstract: Ferritic stainless steel having excellent machinability and local corrosion resistance comprises 21-30% chromium, less than 0.020% carbon, less than 0.050% nitrogen, 0.4-3.5% silicon, less than 3.0% manganese, 1.0-5.0% molybdenum, 0-3.0% vanadium, 0-5.0% nickel, and at least one element selected from the group consisting of 0.05-0.20% sulfur, 0.05-0.30% selenium, 0.05-0.30% tellurium, 0.01-0.20% lead, 0.01-0.20% bismuth and 0.005-0.065% calcium. When from 0.3-3.0% vandium is included the Si content should be 0.4-0.7%. When no vanadium is included the Si content should exceed 1% but not 3%.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: July 20, 1982
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Koshi Katoh, Takayoshi Shimizu
  • Patent number: 4227923
    Abstract: A steel which is suitable for the material of a mold used for plastic molding and which has an improved resistance to corrosion under exposure to a halogen gas generated in injection molding of a thermoplastic synthetic resin blended with a halogen-containing flame-retarding agent is obtained by shaping a steel which consists essentially of up to 0.05% carbon, up to 1.0% silicon, up to 2.0% manganese, 5.0-8.0% nickel, 11.0-15.0% chromium, 1.0-4.0% molybdenum, 0.5-4.0% copper, 0.5-2.0% cobalt and the balance iron into a mold, and then subjecting the mold to age-hardening treatment at a temperature in the range of 400.degree.-450.degree. C. to obtain a hardness of H.sub.R C 30 or higher. The steel may further contain a small, predetermined amount of at least one machinability-improving component such as lead, tellurium, calcium and bismuth and/or a small, predetermined amount of at least one toughness or hardness-improving component such as tungsten, boron, titanium, vanadium, niobium and tantalum.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: October 14, 1980
    Assignee: Daido Seiko Kabushiki Kaisha
    Inventors: Toshiyuki Watanabe, Hisao Kamiya, Noriyoshi Shibata, Takayoshi Shimizu
  • Patent number: 4165982
    Abstract: A molybdenum base alloy containing a given amount of at least one of zirconium and hafnium, a given amount of carbon and not more than given amounts of oxygen and nitrogen has an excellent high-temperature strength. This alloy is produced by an electron beam melting process under high vacuum.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: August 28, 1979
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Fujiwara Tatsuo, Koshi Katoh, Yuzo Ohtakara, Takayoshi Shimizu