Patents by Inventor Issei Nakahara

Issei Nakahara 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).

  • Cellulose Ester Optical Film, Polarizing Plate and Liquid Crystal Display Using the Same, Method of Manufacturing Cellulose Ester Optical Film, and Copolymer.
    Publication number: 20100069535
    Abstract: Disclosed is a cellulose ester optical film containing cellulose ester, a polymer (a) below and a compound (b) below: (a) a polymer obtained by copolymerization of an ethylenically unsaturated monomer having in the molecule a partial structure represented by formula (1) below with at least one ethylenically unsaturated monomer, and (b) at least one compound selected from the group consisting of a compound represented by formula (2) below and a compound represented by formula (3) below,
    Type: Application
    Filed: March 24, 2008
    Publication date: March 18, 2010
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Takayuki Suzuki, Takatugu Suzuki, Issei Nakahara
  • CELLULOSE ESTER OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY USING THE CELLULOSE ESTER OPTICAL FILM, AND METHOD FOR PRODUCING CELLULOSE ESTER OPTICAL FILM
    Publication number: 20100040806
    Abstract: Disclosed is a cellulose ester optical film characterized by containing a cellulose ester, a polymer (a) defined below and a compound (b) defined below. (a) a polymer obtained by copolymerizing an ethylenically unsaturated monomer having a partial structure represented by the general formula (1) below in a molecule and at least one ethylenically unsaturated monomer (b) at least one compound selected from the group consisting of carbon radical scavengers, phenol compounds and phosphorus compounds. (In the formula, R1, R2 and R3 independently represent an optionally substituted aliphatic group, an optionally substituted aromatic group or an optionally substituted heterocyclic group; or alternatively any two of R1, R2 and R3 may combine and form a ring structure together with a nitrogen atom or with a nitrogen atom and a carbon atom to which they are bonded to.
    Type: Application
    Filed: March 24, 2008
    Publication date: February 18, 2010
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Takayuki Suzuki, Takatugu Suzuki, Issei Nakahara
  • COPPER COMPLEX COMPOUND AND ELECTROPHOTOGRAPHIC TONER CONTAINING THE SAME
    Publication number: 20090233208
    Abstract: A copper complex compound represented by Formula (1) is disclosed. in the formula, groups represented by R is a substituent, n is an integer of from 1 to 5 and the total carbon number contained in (R) n is 14 or more. A toner for electrophotography containing the compound is also disclosed.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Koji DAIFUKU, Ryohei IWAMOTO, Keiko ISHIDAI, Kimihiko OOKUBO, Kaori ONO, Issei NAKAHARA
  • ELECTROPHOTOGRAPHIC TONER
    Publication number: 20090233209
    Abstract: An electrophotographic toner is disclosed. The toner contains a compound of Formula X-1 and a copper complex compound represented by the following Formula (1), which are defined detain in the specification.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kimihiko Ookubo, Kaori Ono, Issei Nakahara
  • PYRAZOLOTRIAZOLE COMPOUND AND ELECTROPHOTOGRAPHIC TONER
    Publication number: 20090233207
    Abstract: A compound represented by Formula (X-1) is disclosed. in the formula, Rx1, and Rx2 each independently represents an alkyl group, Lx is a hydrogen atom or an alkyl group, Gx1 is an alkyl group having 2 or more carbon atoms, Gx2 is an alkyl group or an aromatic hydrocarbon group, Gx3 is a hydrogen atom, a halogen atom, a Gx4-CO—NH— group or a Gx5-N(Gx6)-CO— group, Gx5 and Gx6 each independently represents a hydrogen atom or a substituent, and Qx1, Qx2, Qx3, Qx4 and Qx5 each independently represents a hydrogen atom or a substituent. An electrophotographic toner containing the compound is also disclosed.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kimihiko OOKUBO, Ryohei IWAMOTO, Koji DAIFUKU, Keiko ISHIDAI, Kaori ONO, Issei NAKAHARA
  • FILM FOR DISPLAY, POLARIZING PLATE AND MANUFACTURING METHOD THEREOF, AND LIQUID CRYSTAL DISPLAY
    Publication number: 20070227652
    Abstract: A film for a display comprising a cellulose ester and a compound represented by Formula (I) or (Ia).
    Type: Application
    Filed: March 20, 2007
    Publication date: October 4, 2007
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Satomi KAWABE, Koichi SAITO, Takatugu SUZUKI, Kazuaki NAKAMURA, Kenzo KASAHARA, Rumiko YAMADA, Issei NAKAHARA