Patents by Inventor Hayato Kaetsu

Hayato Kaetsu 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: 7081731
    Abstract: A translatory actuator unit including a translatory actuator module that moves an object straightly, a force sensor that detects a load applied to the translatory actuator module, and a servo control module that controls a speed, a position and/or output power of the translatory actuator module. The translatory actuator module, the force sensor and the servo control module are integrally configured. The servo control module has a two-way network means of receiving a control command concerning the speed, the position and/or the output power from a network, and transmitting information of the speed, the position and/or the output power to the network, a control means of controlling the speed, the position and/or the output power, and a self-diagnosis means of confirming safety and detecting an abnormal state based on detected information of the speed, the position, the load, and/or an electric current of the translatory actuator module.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: July 25, 2006
    Assignee: RIKEN
    Inventors: Hajime Asama, Kuniaki Kawabata, Hayato Kaetsu, Kazuhiro Kosuge, Yasuhiro Hirata
  • Publication number: 20040215370
    Abstract: A translatory actuator unit including a translatory actuator module that moves an object straightly, a force sensor that detects a load applied to the translatory actuator module, and a servo control module that controls a speed, a position and/or output power of the translatory actuator module. The translatory actuator module, the force sensor and the servo control module are integrally configured. The servo control module has a two-way network means of receiving a control command concerning the speed, the position and/or the output power from a network, and transmitting information of the speed, the position and/or the output power to the network, a control means of controlling the speed, the position and/or the output power, and a self-diagnosis means of confirming safety and detecting an abnormal state based on detected information of the speed, the position, the load, and/or an electric current of the translatory actuator module.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 28, 2004
    Applicant: RIKEN
    Inventors: Hajime Asama, Kuniaki Kawabata, Hayato Kaetsu, Kazuhiro Kosuge, Yasuhiro Hirata
  • Publication number: 20020054095
    Abstract: A user-adaptive variable-environment system comprises a computer provided with a user recognizing unit, and an information storage remedium which to be applied to the user recognizing unit. The information storage medium stores user-environment information about environments suitable for users, and the user recognizing unit reads the user-environment information stored in the information storage medium and changes operating environments of the computer automatically so as to fit with the user-environment information.
    Type: Application
    Filed: May 19, 1998
    Publication date: May 9, 2002
    Inventors: HAJIME ASAMA, HAYATO KAETSU, ISAO ENDO, YOSHINOBU SHIMOJYO, ISAO SAKAGUCHI
  • Patent number: 5929778
    Abstract: A data carrier system allows data to be transmitted and received. The data is transmitted using weak radio waves of suitable frequencies, such as frequencies in a high frequency band (HF) or a very high frequency band (VHF). The transmitters and receivers need not physically contact each other, be located in any particular position, or be oriented in any particular direction. The data carrier system does not suffer deficiencies in electric power supply, and therefore there exists no need to exchange batteries. Individual transmitters and receivers are positively discriminated one from another. The receivers are in the form of a plurality of tags. The transmitters are in the form of a plurality of reader-writers. Both are controlled by microcomputers, and each tag is equipped with a secondary battery as the power source.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: July 27, 1999
    Assignees: Rikagaku Kenkyusho, Sigma Systems Co., Ltd.
    Inventors: Hajime Asama, Hayato Kaetsu, Shin-ya Kotosaka, Isao Endo, Sakae Miyao, Atsusi Nakamura
  • Patent number: 5819008
    Abstract: An object of the present invention is to provide a sensor system which can effect local communications suitable for exchanging information to avoid collisions between mobile robots. The sensor system also prevents collisions between the mobile robots and obstacles. The system is well-suited for a multi-robot environment where multiple mobile robots operate. The system includes infrared signal transmitters installed in each of the multiple mobile robots for sending transmission data via infrared signals. The system further includes infrared signal receivers installed in each of the multiple mobile robots for receiving the transmission data sent by the infrared signal transmitters. Each mobile robot includes a control unit. The control unit prepares transmission information which includes mobile robot identification information unique to the mobile robot. The transmission information is included in the transmission data sent from the infrared signal transmitter.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: October 6, 1998
    Assignee: Rikagaku Kenkyusho
    Inventors: Hajime Asama, Hayato Kaetsu, Shoji Suzuki, Yoshikazu Arai, Shin-ya Kotosaka, Isao Endo
  • Patent number: 5085748
    Abstract: This invention relates to a process for enriching carbon 13 by mixing a halogenomethane containing one or more fluorine atoms and carbon 13 of natural isotopic abundance with one or two or more additive gases selected from a group of oxygen-containing oxidizing agents, halogens, and hydrogen halides, irradiating the resulting raw material gas mixture by a carbon dioxide laser to cause selective dissociation and reaction of the halogenomethane of carbon 13, separating the unchanged substances from the reaction mixture to obtain a product enriched with carbon 13, further converting the enriched product to carbon monoxide, and enriching carbon 13 by low-temperature distillation of the carbon monoxide. The process has advantages of low overall energy consumption, high yields of carbon 13, easy separability of the unchanged substances and high degrees of carbon 13 enrichment.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: February 4, 1992
    Assignees: Nippon Steel Chemical Co., Ltd., Nippon Steel Corporation, Rikagaku Kenkyusho
    Inventors: Makoto Yamasaki, Yoshiharu Horita, Takashi Otsubo, Takumi Kono, Tomozumi Murata, Yuji Fujioka, Koichi Chiba, Maki Sato, Naoya Hamada, Shigeyoshi Arai, Syohei Isomura, Hayato Kaetsu
  • Patent number: 4941956
    Abstract: An enrichment method of carbon 13 by use of the multistage laser irradiation. A mixture of CHClF.sub.2 and Br.sub.2 is used as a start substance. The mixture is irradiated with laser rays emitted from a carbon dioxide gas laser to obtain CBr.sub.2 F.sub.2 enriched with carbon 13. This CBr.sub.2 F.sub.2 enriched with carbon 13 is once more irradiated with laser rays emitted from a carbon dioxide gas laser to produce C.sub.2 Br.sub.2 F.sub.4 which is further enriched with carbon 13. Alternatively, the product CBr.sub.2 F.sub.2 of the first laser irradiation is once more irradiated together with O.sub.2 to produce COF.sub.2 which is further enriched with carbon 13.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: July 17, 1990
    Assignee: Rikagaku Kenkyusho
    Inventors: Shigeyoshi Arai, Kyoko Sugita, Shohei Isomura, Hayato Kaetsu