Patents by Inventor Takao Katsuyama

Takao Katsuyama 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: 20230322501
    Abstract: A transport robot (2) includes a main body (20), and a plurality of rotating bodies (30) provided on the main body (20) and rotatable about a rotation axis along a direction in which a pair of rails (102L, 102R) extends. The plurality of rotating bodies (30) include a first rotating body (30) having at least one arm (L1, L2) that is configured to abut on one (102L) of the pair of rails (102L, 102R) on a first side which is one side in a traveling direction of the transport robot (2) with respect to the main body (20); and a second rotating body (30) having at least one arm (R1, R2) that is configured to abut on the other (102R) of the pair of rails (102L, 102R) on a second side which is the other side in the traveling direction of the transport robot (2) with respect to the main body (20).
    Type: Application
    Filed: July 9, 2021
    Publication date: October 12, 2023
    Inventor: Takao KATSUYAMA
  • Patent number: 6231425
    Abstract: A polishing apparatus and method capable of polishing stably regardless of variation between polishing objects, change of a polishing means with lapse of time etc. The apparatus includes polishing pad 1, polishing table 3 with the polishing pad 1 adhered thereto, table motor 8 for driving the polishing table 3, conditioning means 5 for conditioning the polishing pad 1 at the same time of polishing and conditioning control system 12 for setting a conditioning condition during polishing. According to a polishing method of the present invention, a conditioning condition of the polishing pad 1 can be set so as to make a torque current 10, which is proportional to a friction force exerted between the polishing pad 1 and the wafer 2, constant, and thereby polishing speed can be stabilized.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 15, 2001
    Assignee: NEC Corporation
    Inventors: Shoichi Inaba, Takao Katsuyama, Morimitsu Tanaka
  • Patent number: 6093080
    Abstract: A polishing apparatus and method capable of polishing stably irrelevant of disorder such as the change of a polishing object, change of a polishing device with lapse of time. A polishing apparatus includes polishing pad 1, polishing table 3 with the polishing pad adhered thereto, table motor 8 for driving the polishing table 3, conditioning device 5 of the polishing pad 1 and conditioning control system 12 for setting conditioning conditions. According to a polishing method of the present invention, conditioning conditions of the polishing pad 1 are set on based on a frictional force exerted between the polishing pad 1 and a substrate or on torque current 10.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: July 25, 2000
    Assignee: NEC Corporation
    Inventors: Shoichi Inaba, Takao Katsuyama, Morimitsu Tanaka