Patents by Inventor Shinji Kuwahara

Shinji Kuwahara 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: 6897312
    Abstract: A method for producing ? crystals of ethyl (R)-2-[4-(6-chloro-2-quinoxalin-2-yloxy)phenoxy]propionate, which is characterized by heating ? crystals, or ? crystals and ? crystals, within a range of from 50° C. to lower than the melting point of the ? crystals.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: May 24, 2005
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Masami Yasukawa, Shinji Kuwahara
  • Publication number: 20020055634
    Abstract: A method for producing high melting point crystals, which is characterized by heating ethyl=(R)-2-[4-(6-chloro-2-quinoxalyloxy)phenoxy]propionate in the form of low melting point crystals, or low melting point crystals and high melting point crystals, within a range of from 50° C. to lower than the melting point of the low melting point crystals.
    Type: Application
    Filed: December 4, 2001
    Publication date: May 9, 2002
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Masami Yasukawa, Shinji Kuwahara
  • Patent number: 6353104
    Abstract: A method for producing &bgr; crystals of ethyl (R)-2-[4-(6-chloro-2-quinoxalin-2-yloxy)phenoxy]propionate, which is characterized by heating &agr; crystals, or &agr; a crystals and &bgr; crystals, within a range of from 50° C. to lower than the melting point of the &agr; crystals.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: March 5, 2002
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Masami Yasukawa, Shinji Kuwahara
  • Patent number: 6113461
    Abstract: In order to eliminate a delay in a driving system and a control system during sequential operation of various component parts, to thereby realize a high speed and easy multi-axis control, a work delivery and removing device (7), a grindstone retracting device (14) and a gauge retracting device (19) are driven by respective compact electric motors (15, 13, 18) through associated reduction gear units. A reference pulse generator (34) for sequencers for generating reference pulses is provided, which reference pulses are distributed by a pulse distributor (35) to various position change curve setting units (36A, 36B, 36C). The position change curve setting units (36A, 36B, 36C) are a so-called electronic cam and output in response to receipt of the corresponding reference pulses respective position commands representative of predetermined position change curves (a, b, c). Servo-controllers (37A, 37B, 37C) are used for controlling the electric motors (15, 13, 18) in response to these outputs.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: September 5, 2000
    Assignee: NTN Corporation
    Inventors: Makoto Onoda, Masatoshi Ichikawa, Takehiro Ohashi, Shinji Kuwahara, Takahiro Nakano, Yuzo Hotta