Patents by Inventor Shichiro Adachi

Shichiro Adachi 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).

  • Patent number: 4544829
    Abstract: A soldering iron is heated by electric resistance heating elements comprising barium titanate PTC thermistors. The soldering iron has an elongated copper bit with a cone shaped bit tip and an elongated back body having a generally rectangular cross section coupled to the bit tip. A pair of flat PTC thermistor heater assemblies sandwich the back body of the bit and are in thermal contact therewith. The heater assemblies are pressed against the back body of the bit with spring contact. A hand-grip is coupled with the bit. The total contact area S.sub.1 between the PTC thermistor heater assemblies and the back body is in the range from 1.0 cm.sup.2 to 25 cm.sup.2 and the transverse cross sectional area S.sub.2 of the back body is in the range from 0.1 cm.sup.2 to 3.0 cm.sup.2.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: October 1, 1985
    Assignee: TDK Corporation
    Inventors: Shichiro Adachi, Sho Kotani
  • Patent number: 4468555
    Abstract: A soldering iron is heated by an electric resistance heating element comprising a PTC thermistor having a positive temperature coefficient. The soldering iron has an elongated bit of copper with a cone shaped bit tip and a cylindrical back portion coupled with said bit tip. The back portion has a pair of arms and a slit between the arms for accepting the heating element with spring contact whereby the arms operate not only to transfer the heat to the tip, but also to fix the heating element in the slit tightly. The PTC thermistor is made mainly of Barium-titanate and has the additive of a small amount of calcium for improving the withstand voltage of the thermistor so that a commercial power supply can supply the power directly to the soldering iron. The total contact area S.sub.1 between the PTC thermistor and the back body being from 1.0 cm.sup.2 to 25 cm.sup.2 and the transverse cross sectional area S.sub.2 of the back body which contacts the thermistor being from 0.1 cm.sup.2 to 3.0 cm.sup.2.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: August 28, 1984
    Assignee: TDK Corporation
    Inventors: Shichiro Adachi, Sho Kotani
  • Patent number: 4183829
    Abstract: Catalysts for purification of exhaust gases from internal combustion engines which are a mixture of aluminum oxide, calcium oxide and one or more of the elements platinum, palladium and rhodium, and method for their use.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: January 15, 1980
    Assignee: TDK Electronics Co. Ltd.
    Inventors: Shichiro Adachi, Suguru Takayama, Takuo Sato
  • Patent number: 3957691
    Abstract: A catalyst for treating exhaust gas from engine vehicles which comprises a intered substance composed of ferric oxide and at least one metallic oxide and forming at least in part a spinel crystal structure. This catalyst can be strengthened by adding aluminum oxide as an additional ingredient. Also, by adding metallic ruthenium to the catalyst, its rate of converting nitrogen compounds can be increased and by adding metallic platinum to the catalyst, its rate of converting carbon monoxide and hydrocarbons can be increased.
    Type: Grant
    Filed: July 5, 1973
    Date of Patent: May 18, 1976
    Assignee: Tokyo Denki Kagaku Kogyo Kabushiki Kaisha (Tokyo Electronics Co., Ltd.)
    Inventors: Shichiro Adachi, Toshinobu Miyakoshi