Patents by Inventor Sadao Yoshinaga

Sadao Yoshinaga 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).

  • Catalyst combustion curling device
    Patent number: 4502465
    Abstract: A catalyst combustion curling device comprises a handle interiorly provided with a liquefied gas tank; a heating barrel mounted on the handle to serve as a curling iron member or a member for mounting the teeth of a comb; a combustion valve provided on the liquefied gas tank; a catalytic member for combusting a liquefied gas from the combustion valve within the heating barrel; and an ignition device for the liquefied gas and an operator on the side of the handle to open and close the combustion valve.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: March 5, 1985
    Assignees: Prince Industrial Development Co., Ltd., Koizumi Sangyo Co., Ltd.
    Inventors: Sadao Yoshinaga, Yoshinobu Tajiri, Hiroyoshi Mashine
  • Gas cigarette lighter with solar cell
    Patent number: 4288209
    Abstract: A gas cigarette lighter for igniting a liquified gas fed out of the combustion valve by applying electric sparks thereto which are generated by the discharge circuit connected to a secondary cell is provided with a solar cell as a supplementary electric source for the secondary cell. The solar cell can be inserted into the lighter casing without increasing the volume of the latter, and the secondary cell can be charged not only with light from the sun but also with light from a fluorescent lamp.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: September 8, 1981
    Assignee: Prince Industrial Development Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Lighter with a watch
    Patent number: 4209977
    Abstract: A lighter with a watch having a watch module interiorly disposed. A lighter case incorporates therein a fuel tank and a watch module and a display of the watch module is visible through a window formed in the side of the lighter case. The lighter is provided with a set button and a select button so as to easily correct reading, the date and hour, and seconds. Further, an ignition operator is utilized to make reading set, thus preventing erroneous operation of selection of the watch module and reading set.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: July 1, 1980
    Assignee: Prince Industrial Development Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D245269
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: August 2, 1977
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D245346
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: August 9, 1977
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D247122
    Type: Grant
    Filed: January 6, 1977
    Date of Patent: January 31, 1978
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D247376
    Type: Grant
    Filed: January 6, 1977
    Date of Patent: February 28, 1978
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D251922
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: May 22, 1979
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D254873
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: April 29, 1980
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga
  • Cigarette lighter
    Patent number: D264257
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: May 4, 1982
    Assignee: Yoshinaga Prince Co., Ltd.
    Inventor: Sadao Yoshinaga