Patents Assigned to Toshio Mukai
  • Charge transfer complex formed between benzoquinone derivative and electron donor and process for producing the same
    Patent number: 5151528
    Abstract: A charge transfer complex formed between a benzoquinone derivative represented by formula ##STR1## wherein at least one of the rings A and B represents a heterocyclic ring as defined in the specification, and an electron donor, and a salt of an anion or anion radical of the benzoquinone derivative of the above formula are disclosed. The charge transfer complex and the salt are useful as electronic materials.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: September 29, 1992
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki
  • Bis[1,2,5]thiadiazolo[3,4-b:3', 4'-e]pyrazine, a process for the preparation thereof and a method of using same
    Patent number: 5068328
    Abstract: A thiadiazolo pyrazine compound and a method of using such a compound as an organoelectric material in a semiconductor.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: November 26, 1991
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita
  • Novel tetracyanoanthraquinodimethane derivatives and process for producing same
    Patent number: 5023356
    Abstract: A novel tetracyanoanthraquinodimethane derivative and a process for producing it are disclosed, the tetracyanoanthraquinodimethane derivative being represented by formula: ##STR1## wherein R, m, and n are as defined in the specification. A solid charge transfer complex of the tetracyanoanthraquinodimethane derivative with an electron donating compound and a process for producing it are also disclosed.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: June 11, 1991
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki, Yutaka Akasaki, Katsuhiro Sato, Naoya Yabuuchi, Hiroyuki Tanaka, Katsumi Nukada
  • Novel tetracyanoanthraquinodimethane derivatives and process for producing same
    Patent number: 4990634
    Abstract: A novel tetracyanoanthraquinodimethane derivative and a process for producing it are disclosed, the tetracyanoanthraquinodimethane derivative being represented by formula: ##STR1## wherein R, m, and n are as defined in the specification. A solid charge transfer complex of the tetracyanoanthraquinodimethane derivative with an electron donating compound and a process for producing it are also disclosed.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: February 5, 1991
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki, Yutaka Akasaki, Katsuhiro Sato, Naoya Yabuuchi, Hiroyuki Tanaka, Katsumi Nukada
  • Charge transfer complex formed between benzoquinone derivative and electron donor and process for producing the same
    Patent number: 4960886
    Abstract: A charge transfer complex formed between a benzoquinone derivative represented by formula ##STR1## wherein at least one of the rings A and B represents a heterocyclic ring as defined in the specification, and an electron donor, and a salt of an anion or anion radical of the benzoquinone derivative of the above formula are disclosed. The charge transfer complex and the salt are useful as electronic materials.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: October 2, 1990
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita, Takanori Suzuki
  • Bis(1,2,5)thiadiazolo(3,4-b:3',4'-E) pyrazine, a process for the preparation thereof and a method of using same
    Patent number: 4929730
    Abstract: The compound bis[1,2,5]thiadiazolo[3,4-b:3',4'-e]pyrazine represented by the formula (I): ##STR1## a process for preparing this compound, a method of using this compound and novel intermediate products.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: May 29, 1990
    Assignees: Fuji Xerox Co., Ltd., Toshio Mukai
    Inventors: Toshio Mukai, Yoshiro Yamashita