Patents by Inventor Toshiya Sagisaka

Toshiya Sagisaka 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: 7893192
    Abstract: Provided are pi-conjugated polymer materials that are useful for photoelectric transducer elements having high hole transportability and excellent durability, that are useful for light-emitting elements having superior emitting properties and excellent durability, and that are useful for active layers of thin film transistors. The pi-conjugated polymers comprise a constitutional unit expressed by the General Formula (I) or (II): in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent; Ar1 represents a divalent group of an aromatic hydrocarbon or a heterocycle that may have a substituent; in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: February 22, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaomi Sasaki, Masafumi Torii, Takashi Okada, Toshiya Sagisaka
  • Publication number: 20110040107
    Abstract: A [1]benzothieno[3,2-b][1]benzothiophene compound expressed by General Formula (I): General Formula (I) where X and Y are each independently a hydrogen atom; a halogen atom; or a functional group having a straight or branched aliphatic alkyl group optionally having a halogen atom, a functional group having an alicyclic alkyl group optionally having a halogen atom, a functional group having a straight or branched aliphatic alkenyl group optionally having a halogen atom, a functional group having an alicyclic alkenyl group optionally having a halogen atom, a functional group having a carboxyl group, or a functional group having a thiol group, as a partial structure; and X and Y are the same or each independently different, provided that at least one of X and Y has a straight or branched aliphatic alkenyl group, an alicyclic alkenyl group, a carboxyl group or a thiol group, as a partial structure.
    Type: Application
    Filed: April 15, 2009
    Publication date: February 17, 2011
    Inventors: Daisuke Goto, Masafumi Torii, Tamotsu Horiuchi, Tamotsu Aruga, Hiroshi Ikuno, Toshiya Sagisaka, Satoshi Yamamoto, Takeshi Orito, Masataka Mohri, Takashi Okada, Takuji Kato, Shinji Mutsumoto
  • Publication number: 20100279460
    Abstract: To provide an organic thin film transistor including a pair of electrodes for allowing a current to flow through an organic semiconductor layer made of an organic semiconductor material, and a third electrode, wherein the organic semiconductor material is composed mainly of an arylamine polymer having a weight-average molecular weight (Mw) of 20,000 or more.
    Type: Application
    Filed: July 15, 2010
    Publication date: November 4, 2010
    Inventors: Takumi Yamaga, Toshiya Sagisaka
  • Publication number: 20100219405
    Abstract: A polymer containing a repeating unit expressed by General Formula (I): General Formula (I) where Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group; Ar2 and Ar3 each independently represent a divalent group of a substituted or unsubstituted aromatic hydrocarbon group; and R1 and R2 each independently represent a hydrogen atom, substituted or unsubstituted alkyl group, or substituted or unsubstituted aromatic hydrocarbon group.
    Type: Application
    Filed: September 11, 2008
    Publication date: September 2, 2010
    Inventors: Toshiya Sagisaka, Takashi Okada, Masaomi Sasaki, Masafumi Torii, Takuji Kato, Tamotsu Aruga, Satoshi Yamamoto, Daisuke Goto, Shinji Matsumoto
  • Patent number: 7745988
    Abstract: A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; and at least one layer including a luminescent layer, optionally a hole transporting layer and an electron transporting layer, which is located between the anode and the cathode, wherein the at least one layer includes the 3,6-diphenylcarbazole compound.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: June 29, 2010
    Assignee: Ricoh Company, Limited
    Inventors: Masaomi Sasaki, Masafumi Torii, Toshiya Sagisaka, Takashi Okada, Shinichi Kawamura, Chihaya Adachi, Yuuichiroh Kawamura, Kenji Muneuchi
  • Patent number: 7718760
    Abstract: The present invention provides a ?-conjugated polymer containing a repeating unit expressed by the following General Formula (I): where, in the General Formula (I), Y and Ar represent one of a substituted or unsubstituted aromatic hydrocarbon and a substituted or unsubstituted divalent group of aromatic heterocyclic ring, Y1 represents one of a substituted or unsubstituted unsaturated aliphatic hydrocarbon, a substituted or unsubstituted aromatic hydrocarbon and a substituted or unsubstituted divalent group of aromatic heterocyclic ring and R represents one of a hydrogen atom, a substituted or unsubstituted alkyl group and a substituted or unsubstituted aromatic hydrocarbon group.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: May 18, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaomi Sasaki, Toshiya Sagisaka, Masafumi Torii, Takashi Okada, Shinichi Kawamura
  • Publication number: 20090230386
    Abstract: A benzobisthiazole compound having a specific formula, and a benzobisthiazole polymer having a specific benzothiazole structure. An organic film including the benzobisthiazole polymer, the benzobisthiazole compound and/or a polymer obtained from the benzobisthiazole compound. An organic thin-film transistor including an organic semiconductor layer including the organic film; a pair of electrodes configured to flow an electric current through the organic semiconductor layer; and a third electrode configured to apply a voltage to the organic semiconductor layer.
    Type: Application
    Filed: January 21, 2009
    Publication date: September 17, 2009
    Inventors: Satoshi Yamamoto, Masafumi Torii, Tamotsu Aruga, Tamotsu Horiuchi, Takujl Kato, Toshiya Sagisaka, Takashi Okada, Daisuke Goto, Shinji Matsumoto, Hiroshi Ikuno, Takeshi Orito, Masataka Mohri
  • Publication number: 20090206329
    Abstract: To provide an organic thin film transistor including a pair of electrodes for allowing a current to flow through an organic semiconductor layer made of an organic semiconductor material, and a third electrode, wherein the organic semiconductor material is composed mainly of an arylamine polymer having a weight-average molecular weight (Mw) of 20,000 or more.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 20, 2009
    Inventors: Takumi Yamaga, Toshiya Sagisaka
  • Patent number: 7550554
    Abstract: An aryl amine polymer is provided which contains a specific repeat unit, its use in preparing an organic semiconductor material which contains the aryl amine polymer and an additional specific compound and in the preparation of organic light emitting devices (OLED), organic thin film transistors (TFT) and so on, along with an organic TFT including a substrate, an organic semiconductor layer which contains the organic semiconductor material and is located overlying the substrate, an electrode pair of a source electrode and a drain electrode; and a third electrode.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: June 23, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiya Sagisaka, Masaomi Sasaki, Masafumi Torii, Shinichi Kawamura, Takashi Okada, Yoshinobu Nakayama, Yoshikazu Akiyama, Hitoshi Kondoh, Hidenori Tomono, Takumi Yamaga
  • Publication number: 20070213503
    Abstract: Provided are pi-conjugated polymer materials that are useful for photoelectric transducer elements having high hole transportability and excellent durability, that are useful for light-emitting elements having superior emitting properties and excellent durability, and that are useful for active layers of thin film transistors. The pi-conjugated polymers comprise a constitutional unit expressed by the General Formula (I) or (II): in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent; Ar1 represents a divalent group of an aromatic hydrocarbon or a heterocycle that may have a substituent; in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 13, 2007
    Inventors: Masaomi Sasaki, Masafumi Torii, Takashi Okada, Toshiya Sagisaka
  • Publication number: 20070092760
    Abstract: An aryl amine polymer is provided which contains a specific repeat unit, its use in preparing an organic semiconductor material which contains the aryl amine polymer and an additional specific compound and in the preparation of organic light emitting devices (OLED), organic thin film transistors (TFT) and so on, along with an organic TFT including a substrate, an organic semiconductor layer which contains the organic semiconductor material and is located overlying the substrate, an electrode pair of a source electrode and a drain electrode; and a third electrode.
    Type: Application
    Filed: December 5, 2006
    Publication date: April 26, 2007
    Inventors: Toshiya Sagisaka, Masaomi Sasaki, Masafumi Torii, Shinichi Kawamura, Takashi Okada, Yoshinobu Nakayama, Yoshikazu Akiyama, Hitoshi Kondoh, Hidenori Tomono, Takumi Yamaga
  • Publication number: 20070048637
    Abstract: An arylamine polymer containing a repeating unit represented by the following chemical structure (I): In the chemical structure, Ar1, Ar3, and Ar4 independently represent a substituted or non-substituted divalent aromatic hydrocarbon group, Ar2 represents a substituted or non-substituted univalent aromatic hydrocarbon group, R1 and R2 independently represent a hydrogen atom, a substituted or non-substituted alkyl group, a substituted or non-substituted alkoxy group or a substituted or non-substituted alkylthio group, x and y independently represent an integer of from 0 to 2, and n represents 0 or 1.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 1, 2007
    Inventors: Takashi Okada, Masaomi Sasaki, Masafumi Torii, Shinichi Kawamura, Toshiya Sagisaka, Yoshikazu Akiyama, Takumi Yamaga
  • Patent number: 7166689
    Abstract: An aryl amine polymer is provided which contains a specific repeat unit, its use in preparing an organic semiconductor material which contains the aryl amine polymer and an additional specific compound and in the preparation of organic light emitting devices (OLED), organic thin film transistors (TFT) and so on, along with an organic TFT including a substrate, an organic semiconductor layer which contains the organic semiconductor material and is located overlying the substrate, an electrode pair of a source electrode and a drain electrode; and a third electrode.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: January 23, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiya Sagisaka, Masaomi Sasaki, Masafumi Torii, Shinichi Kawamura, Takashi Okada, Yoshinobu Nakayama, Yoshikazu Akiyama, Hitoshi Kondoh, Hidenori Tomono, Takumi Yamaga
  • Publication number: 20060247413
    Abstract: The present invention provides a ?-conjugated polymer containing a repeating unit expressed by the following General Formula (I): where, in the General Formula (I), Y and Ar represent one of a substituted or unsubstituted aromatic hydrocarbon and a substituted or unsubstituted divalent group of aromatic heterocyclic ring, Y1 represents one of a substituted or unsubstituted unsaturated aliphatic hydrocarbon, a substituted or unsubstituted aromatic hydrocarbon and a substituted or unsubstituted divalent group of aromatic heterocyclic ring and R represents one of a hydrogen atom, a substituted or unsubstituted alkyl group and a substituted or unsubstituted aromatic hydrocarbon group.
    Type: Application
    Filed: March 10, 2006
    Publication date: November 2, 2006
    Inventors: Masaomi Sasaki, Toshiya Sagisaka, Masafumi Torii, Takashi Okada, Shinichi Kawamura
  • Publication number: 20050084711
    Abstract: A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; and at least one layer including a luminescent layer, optionally a hole transporting layer and an electron transporting layer, which is located between the anode and the cathode, wherein the at least one layer includes the 3,6-diphenylcarbazole compound.
    Type: Application
    Filed: September 3, 2004
    Publication date: April 21, 2005
    Inventors: Masaomi Sasaki, Masafumi Torii, Toshiya Sagisaka, Takashi Okada, Shinichi Kawamura, Chihaya Adachi, Yuuichiroh Kawamura, Kenji Muneuchi
  • Publication number: 20040212042
    Abstract: An aryl amine polymer is provided which contains a specific repeat unit, its use in preparing an organic semiconductor material which contains the aryl amine polymer and an additional specific compound and in the preparation of organic light emitting devices (OLED), organic thin film transistors (TFT) and so on, along with an organic TFT including a substrate, an organic semiconductor layer which contains the organic semiconductor material and is located overlying the substrate, an electrode pair of a source electrode and a drain electrode; and a third electrode.
    Type: Application
    Filed: February 13, 2004
    Publication date: October 28, 2004
    Inventors: Toshiya Sagisaka, Masaomi Sasaki, Masafumi Torii, Shinichi Kawamura, Takashi Okada, Yoshinobu Nakayama, Yoshikazu Akiyama, Hitoshi Kondoh, Hidenori Tomono, Takumi Yamaga