Patents by Inventor Kazunari Sugiura

Kazunari Sugiura 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).

  • Semiconductor device having trimmable fuses and position alignment marker formed of thin film
    Patent number: 6320242
    Abstract: In a semiconductor integrated circuit device having laser-trimmable fuses and a trimming position pattern, in order to increase trimming accuracy and reduce the size of the positioning pattern, the fuses and the positioning pattern are formed using the same thin film. The trimming positioning pattern has an abrupt boundary between a high light reflectivity region and a low reflectivity region so that light reflectivity varies abruptly. To further reduce size, the trimming positioning pattern can be formed in pad areas of a integrated circuit chip or placed at intersections between scribe lines in a wafer.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: November 20, 2001
    Assignee: Seiko Instruments Inc.
    Inventors: Hiroaki Takasu, Noritoshi Ando, Yoshikazu Kojima, Kazunari Sugiura, Michiaki Yazawaw
  • Charge and discharge control circuit
    Patent number: 6052016
    Abstract: A plurality of combinations of overcurrent detection voltages and delay times are set in a charge and discharge control circuit. Accordingly, a charge and discharge control circuit is formed in which an overcurrent condition having unexpectedly large consumption current, such as a short circuit, does not damage the circuit.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 18, 2000
    Assignee: Seiko Instruments Inc.
    Inventors: Kazunari Sugiura, Hiroshi Mukainakano, Masanao Hamaguchi, Takayuki Takahashi