Patents by Inventor Ryou Kurosawa

Ryou Kurosawa 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).

  • Differential pressure/pressure transmitter
    Patent number: 6796185
    Abstract: The differential pressure/pressure transmitter of the present invention detects overpressures by using pre-loading diaphragms. The differential pressure/pressure transmitter of the present invention is provided with a high pressure-side diaphragm assembly 24 having a high pressure-side process diaphragm 34, which transfers high pressure from a process to the high pressure-side transfer oil, and a high pressure-side pre-loading diaphragm 32. The differential pressure/pressure transmitter is also provided with a low pressure-side diaphragm assembly 25 having a low pressure-side process diaphragm 38 and a low pressure-side pre-loading diaphragm 36. A differential pressure sensor assembly is provided to detect the pressure difference between the high pressure-side transfer oil from the high pressure-side diaphragm assembly and the above low pressure-side transfer oil from the low pressure-side diaphragm assembly.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: September 28, 2004
    Assignee: Yokogawa Electric Corporation
    Inventors: Ryou Kurosawa, Mamoru Aizawa
  • Differential pressure/pressure transmitter
    Publication number: 20040040384
    Abstract: In a differential pressure/pressure transmitter having a construction in which overpressures are detected utilizing pre-loading diaphragms, the pressure sensing assembly in which the displacement volume is made larger even under low pressure is provided by forming pre-loading diaphragms in corrugated shapes.
    Type: Application
    Filed: March 28, 2003
    Publication date: March 4, 2004
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Ryou Kurosawa, Mamoru Aizawa