Patents by Inventor Masao Isshiki

Masao Isshiki 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).

  • Current control apparatus for air-conditioning system
    Patent number: 5207071
    Abstract: There is disclosed a current control apparatus comprising first controllers adapted for detecting an overall or total load current to calculate distribution values for distributing a current margin with respect to an overall or total current limit value to respective air-conditioners; and second controllers adapted for respectively controlling air-conditioners so as not to exceed individual current limit values, and for carrying out an incremental correction of individual current limit values in accordance with distribution values calculated by the first controllers.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: May 4, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masao Ozu, Harunobu Nukushina, Michika Uesugi, Atsuyuki Hiruma, Kazuo Mochizuki, Toru Kubo, Masao Isshiki, Oserojouin Watabiki, Hiroyuki Ota, Kazuhito Ono
  • Air conditioning apparatus having audible sound level control function
    Patent number: 5010739
    Abstract: An audible sound radiated from an air conditioning apparatus is decreased when the actual audible sound detected by the sound sensor is greater than a predetermined audible sound value which is modified according to changes in the ambient light or the ambient temperature.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: April 30, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masao Isshiki, Takeshi Kumazawa