Patents by Inventor Tamaki Nakano

Tamaki Nakano 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).

  • Publication number: 20230064406
    Abstract: To provide a proton conductive material which has high proton conductivity even under no humidification and does not elute into water. A proton conductive material comprising a proton-source-polymer and a proton-channel-polymer, wherein at least one selected from the group consisting of the proton-source-polymer and the proton-channel-polymer is a polymer containing an aromatic ring, and wherein at least a part of the polymer containing the aromatic ring has a stacked structure formed by n-n interactions, and a proton conductive material comprising a proton-source-crosslinked-polymer, wherein the proton-source-crosslinked-polymer is a polymer having a main skeleton which contains a proton source group and an aromatic ring, and a crosslinked structure which contains a proton channel, and wherein at least a part of the proton-source-crosslinked-polymer has a stacked structure formed by n-n interactions.
    Type: Application
    Filed: August 2, 2022
    Publication date: March 2, 2023
    Inventors: Naoki NAKAMURA, Tamaki NAKANO
  • Patent number: 7585931
    Abstract: Disclosed are optically active high-molecular-weight compounds of the following formula and stationary-phase materials containing the same. The high-molecular-weight compounds exhibit optical activity by virtue of their stacking helical structure wherein the aromatic groups are aligned in a twisted arrangement, thus being useful as optically active stationary phases for HPLC or polarized- light absorbers.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: September 8, 2009
    Assignee: Japan Science And Technology Corporation
    Inventor: Tamaki Nakano
  • Patent number: 7323538
    Abstract: A polymer compound having a functional group containing a cyclic part with aromatic properties comprising C, H and/or C, H, X (X is a hetero atom) in the side-chain, and a number average molecular weight of 250-1,000,000. The molar optical absorption due to the cyclic part with aromatic properties of the polymer compound is lower 30% or more than the molar optical absorption due to the cyclic part with aromatic properties in a polymerizing monomer used to introduce the cyclic part with aromatic properties. As this cyclic part has an overlapping stack structure, the compound has a hypochromic effect, and if an electron donor compound or electron-accepting compound is added, a charge transfer complex is formed.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: January 29, 2008
    Assignee: Japan Science and Technology Agency
    Inventor: Tamaki Nakano
  • Patent number: 7235620
    Abstract: A polyester expressed by the following structural formula 1, and a charge transport material obtained by adding an electron acceptor compound or an electron donor compound to this polyester. In the aforesaid structural formula, Ar is an aromatic group and this aromatic group may contain a heterocyclic ring. R1 is a carbon atom or absent (direct bond), R2–R9 are hydrogen atoms, electron donor groups or electron attracting groups, R20, R21 are hydrogen atoms or organic groups, X is a hetero atom, hetero atom-containing group, organic group or absent (direct bond), and m is an integer equal to 2 or more.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: June 26, 2007
    Assignee: Japan Science and Technology Corporation
    Inventor: Tamaki Nakano
  • Patent number: 7012123
    Abstract: An acrylic polymer suitable for use as a charge transport material, the acrylic polymer containing pendant ?-conjugated groups represented by the following general formula (1) and having a triad syndiotacticity or triad isotacticity of at least 60%: wherein in the formula (1), Ar represents an aromatic group, R1 represents hydrogen or a methyl group, R2 represents an organic group or none, R3 and R4 both represent hydrogen or at least one of them represents an electron-donating or electron-withdrawing group, and n denotes an integer of 2 or larger.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: March 14, 2006
    Assignee: Sekisvi Chemical Co., Ltd.
    Inventors: Hideaki Ishizawa, Tamaki Nakano
  • Publication number: 20050234267
    Abstract: This invention relates to optically active high-molecular-weight compounds represented by the structural formula and stationary-phase materials containing the same. The high-molecular-weight compounds exhibit optical activity by virtue of their stacking helical structure wherein the aromatic groups are aligned in a twisted arrangement, thus being useful as optically active stationary phases for HPLC or polarized-light absorbers. In the formula 1 Ar in the formula is an aromatic ring, R1, and R2 are hydrogen atoms or organic groups, R3 and R4 are substituents, n is an integer of 2 or more, X is a group selected from among —(CH2)m—, an aromatic group, a vinyl group, a hetero atom and a group containing a hetero atom, and m is an integer of 0 or more. R3 and R4 may be introduced 2-4 times respectively, wherein these may be identical or different, and R is a hydrogen atom, a hetero atom or an organic group.
    Type: Application
    Filed: May 7, 2003
    Publication date: October 20, 2005
    Inventor: Tamaki Nakano
  • Publication number: 20050228163
    Abstract: A polyester expressed by the following structural formula 1, and a charge transport material obtained by adding an electron acceptor compound or an electron donor compound to this polyester. In the aforesaid structural formula, Ar is an aromatic group and this aromatic group may contain a heterocyclic ring. R1 is a carbon atom or absent (direct bond), R2-R9 are hydrogen atoms, electron donor groups or electron attracting groups, R20, R21 are hydrogen atoms or organic groups, X is a hetero atom, hetero atom-containing group, organic group or absent (direct bond), and m is an integer equal to 2 or more.
    Type: Application
    Filed: May 7, 2003
    Publication date: October 13, 2005
    Inventor: Tamaki Nakano
  • Publication number: 20040132963
    Abstract: A polymer compound having a functional group containing a cyclic part with aromatic properties comprising C, H and/or C, H, X (X is a hetero atom) in the side-chain, and a number average molecular weight of 250-1,000,000. The molar optical absorption due to the cyclic part with aromatic properties of the polymer compound is lower 30% or more than the molar optical absorption due to the cyclic part with aromatic properties in a polymerizing monomer used to introduce the cyclic part with aromatic properties. As this cyclic part has an overlapping stack structure, the compound has a hypochromic effect, and if an electron donor compound or electron-accepting compound is added, a charge transfer complex is formed.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 8, 2004
    Inventor: Tamaki Nakano
  • Publication number: 20030204036
    Abstract: An acrylic polymer suitable for use as a charge transport material, the acrylic polymer containing pendant &pgr;-conjugated groups represented by the following general formula (1) and having a triad syndiotacticity or triad isotacticity of at least 60%: 1
    Type: Application
    Filed: April 24, 2003
    Publication date: October 30, 2003
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hideaki Ishizawa, Tamaki Nakano