Patents by Inventor Kazuyuki Takai

Kazuyuki Takai 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: 20220259040
    Abstract: Provided are: a catalyst that is used in a reaction for producing hydrogen from an alkane without emitting CO2; a method of producing hydrogen without emitting CO2 by using the catalyst; and a method of producing ammonia using, as a reducing agent, hydrogen produced using the catalyst. The alkane dehydrogenation catalyst according to the present disclosure contains a graphene having at least one type of structure selected from an atomic vacancy structure, a singly hydrogenated vacancy structure, a doubly hydrogenated vacancy structure, a triply hydrogenated vacancy structure, and a nitrogen-substituted vacancy structure. The graphene preferably has from 2 to 200 of the structure approximately per 100 nm2 of the atomic film of the graphene. In addition, the hydrogen production method according to the present disclosure includes extracting hydrogen from an alkane by using the alkane dehydrogenation catalyst.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 18, 2022
    Applicants: OSAKA UNIVERSITY, HOSEI UNIVERSITY, DAICEL CORPORATION
    Inventors: Koichi KUSAKABE, Kazuyuki TAKAI, Masahiro NISHIKAWA, Ming LIU
  • Patent number: 11072524
    Abstract: The objective of the present invention is to provide a carbon-based hydrogen storage material having an autocatalytic capability and an atomic vacancy, wherein the hydrogen storage is a hydrocarbon compound which produces a non-endothermic release or an exothermic release of hydrogen adsorbed in the compound. In addition, the present invention provides a method of manufacturing the material comprising: preparing a hydrocarbon compound as the raw material of the carbon-based hydrogen storage material; setting the raw material in a container having a predetermined gas partial pressure; producing the hydrocarbon compound by ion beam irradiation of the raw material; performing annealing treatment under the predetermined conditions; and exposing the product to the hydrogen under the predetermined conditions, wherein the product is a hydrogen storage hydrocarbon compound producing a non-endothermic or an exothermic release of hydrogen adsorbed thereto with autocatalysis activity.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 27, 2021
    Assignees: Osaka University, Fukuoka Institute of Technology, Hosei University
    Inventors: Koichi Kusakabe, Gagus Ketut Sunnardianto, Toshiaki Enoki, Isao Maruyama, Kazuyuki Takai
  • Publication number: 20190233282
    Abstract: The objective of the present invention is to provide a carbon-based hydrogen storage material having an autocatalytic capability, and a production method therefor. The present invention provides a carbon-based hydrogen storage material having an atomic defect, which is a hydrogen adsorbing-storing hydrocarbon compound having an autocatalysis reaction, wherefrom hydrogen that has been adsorbed and stored within the compound is either released while no heat is absorbed, or released while heat is generated.
    Type: Application
    Filed: February 28, 2019
    Publication date: August 1, 2019
    Applicants: Osaka University, Fukuoka Institute of Technology, Hosei University
    Inventors: Koichi KUSAKABE, Gagus Ketut SUNNARDIANTO, Toshiaki ENOKI, Isao MARUYAMA, Kazuyuki TAKAI
  • Publication number: 20030087851
    Abstract: A pharmaceutical composition for treating or preventing influenza comprising an oligonucleotide containing a base sequence complementary to a base sequence of a target region containing a translational initiation codon AUG of a PB2 gene or a PA gene, a liposome stable in blood, and a pharmaceutically acceptable carrier or dilute is disclosed. The pharmaceutical composition for treating or preventing influenza can be used in an effective treatment of or prevention of an infection by influenza viruses.
    Type: Application
    Filed: July 19, 2001
    Publication date: May 8, 2003
    Applicant: BIOZAK, INC.
    Inventors: Hiroshi Takaku, Kazuyuki Takai, Toshifumi Hatta, Tadashi Mizuta, Shiro Shigeta, Tomoyuki Yokota
  • Patent number: 6495675
    Abstract: A pharmaceutical composition comprising a capped oligonucleotide capable of binding to a PB2 protein of an influenza virus RNA polymerase, and a pharmaceutically acceptable carrier or dilute, said capped oligonucleotide having a structure of the formula (I): m7GpppXpY  (I) wherein ppp is a triphosphate bridge, p is a monophosphate bridge, m7G is 7-methylguanosine group binding at 5′ end thereof to said ppp, X is a 2′-O-methyl guanosine group or guanosine group, said 2′-O-methyl guanosine group or guanosine group binds at a 5′ end thereof to said ppp, and at a 3′ end thereof to said p, and Y is an oligoribonucleotide moiety binding at 5′ end thereof to said p, and having 5 to 11 bases is disclosed. The pharmaceutical composition can inhibit a protein expression of an influenza virus.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: December 17, 2002
    Assignee: Chiba Institute of Technology
    Inventors: Hiroshi Takaku, Kin-ichiro Miura, Toshifumi Hatta, Kazuyuki Takai, Masahide Ishikawa