Patents by Inventor Kiyoshi Tamaki

Kiyoshi Tamaki 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: 20210032276
    Abstract: Provided is a near-infrared ray absorbing composition including a near-infrared absorber and a solvent, wherein the near-infrared absorber contains at least one of the following component (A) and component (B); and a compound represented by Formula (I) is contained in the component (A) or component (B) in the range of 0.
    Type: Application
    Filed: May 29, 2019
    Publication date: February 4, 2021
    Inventors: Natsumi ITAMOTO, Koji DAIFUKU, Yosuke MIZUTANI, Keigo TAMAKI, Yutaro HORIE, Kenji HAYASHI, Issei NAKAHARA, Takahiko NOJIMA, Kiyoshi FUKUSAKA
  • Publication number: 20210026053
    Abstract: Disclosed is a near-infrared absorbing composition, including: a near-infrared absorbing agent; and a solvent, wherein the near-infrared absorbing agent includes at least one of the following Component (A) and Component (B): Component (A): a component composed of a compound having a structure of the following general formula (I) and a metal ion; Component (B): a component composed of a metal complex that is obtainable by a reaction of the compound having the structure of the following general formula (I) and a metal compound.
    Type: Application
    Filed: March 11, 2019
    Publication date: January 28, 2021
    Inventors: Koji DAIFUKU, Yosuke MIZUTANI, Natsumi ITAMOTO, Keigo TAMAKI, Yutaro HORIE, Kenji HAYASHI, Issei NAKAHARA, Takahiko NOJIMA, Kiyoshi FUKUSAKA
  • Patent number: 9602220
    Abstract: The disclosure concerns quantum repeater network system that does not need any matter qubit. According to the quantum repeater network system for performing quantum communication between one transmitter/receiver and the other transmitter/receiver via transmission repeaters and reception repeaters, each of the transmission repeaters prepares quantum systems in an irreducibly entangled state, each of the quantum systems being associated with a reception repeater as a transmission destination, and transmits, to the associated reception repeater, each of the quantum systems in the irreducibly entangled state together with a quantum system entangled with the quantum system.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: March 21, 2017
    Assignees: Nippon Telegraph and Telephone Corporation, The Governing Council of the University of Toronto
    Inventors: Koji Azuma, Kiyoshi Tamaki, Hoi-Kwong Lo
  • Publication number: 20140363174
    Abstract: Provided is a quantum repeater network system that does not need any matter qubit. According to the quantum repeater network system for performing quantum communication between one transmitter/receiver and the other transmitter/receiver via transmission repeaters and reception repeaters, each of the transmission repeaters prepares quantum systems in an irreducibly entangled state, each of said quantum systems being associated with a reception repeater as a transmission destination, and transmits, to the associated reception repeater, each of the quantum systems in the irreducibly entangled state together with a quantum system entangled with the quantum system.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 11, 2014
    Inventors: Koji Azuma, Kiyoshi Tamaki, Hoi-Kwong Lo
  • Publication number: 20020146774
    Abstract: The invention describes amino acid residues of the Smad2 protein which are important for phosphorylation and activity, and Smad2 polypeptide fragments and biologically functional variants thereof. Included and dominant-negative variants of Smad2 and antibodies relating thereto. Also included are nucleic acids which encode such variants. Antibodies which selectively bind pathway-restricted Smad proteins phosphorylated at the C-terminal tail also are provided. Methods and products for using such nucleic acids and polypeptides also are provided.
    Type: Application
    Filed: April 9, 2002
    Publication date: October 10, 2002
    Inventors: Serhiy Souchelnytskyi, Kiyoshi Tamaki, Ulla Engstrom, Christer Wernstedt, Ester Piek, Peter Ten Dijke, Carl-Henrik Heldin
  • Patent number: 6368829
    Abstract: The invention describes amino acid residues of the Smad2 protein which are important for phosphorylation and activity, and Smad2 polypeptide fragments and biologically functional variants thereof. Included and dominant-negative variants of Smad2 and antibodies relating thereto. Also included are nucleic acids which encode such variants. Antibodies which selectively bind pathway-restricted Smad proteins phosphorylated at the C-terminal tail also are provided. Methods and products for using such nucleic acids and polypeptides also are provided.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: April 9, 2002
    Assignee: Ludwig Institute for Cancer Research
    Inventors: Serhly Souchelnytskyi, Kiyoshi Tamaki, Ulla Engotröm, Christer Wornstedt, Ester Piek, Peter Bon Dijke, Carl-Henrik Heldin
  • Patent number: 6103869
    Abstract: The invention describes amino acid residues of the Smad2 protein which are important for phosphorylation and activity, and Smad2 polypeptide fragments and biologically functional variants thereof. Included and dominant-negative variants of Smad2 and antibodies relating thereto. Also included are nucleic acids which encode such variants. Antibodies which selectively bind pathway-restricted Smad proteins phosphorylated at the C-terminal tail also are provided. Methods and products for using such nucleic acids and polypeptides also are provided.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: August 15, 2000
    Assignee: Ludwig Institute for Cancer Research
    Inventors: Serhiy Souchelnytokyi, Kiyoshi Tamaki, Ulla Engetrom, Christer Wernstedt, Ester Piek, Peter ton Dijke, Carl-Henrik Heldin
  • Patent number: 5443922
    Abstract: An organic thin film electroluminescence element is disclosed. It comprises an organic compound represented by formula I in a luminescent layer or electron injection layer. The element may further comprises a compound represented by formula II in a hole injection layer. ##STR1## The definition is detailed in the description. The element has a greater intensity of luminescence and a high durability.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: August 22, 1995
    Assignee: Konica Corporation
    Inventors: Kouji Nishizaki, Shigeki Takeuchi, Toyoko Shibata, Kiyoshi Tamaki
  • Patent number: 5350655
    Abstract: An electrophotographic photoreceptor is disclosed. The photoreceptor comprises a conductive substrate and a photosensitive layer provided on the substrate. The photosensitive layer comprises titanylphthalocyanine having a peak at a Bragg angle 2.theta. of 27.2.degree..+-.2.degree. in the Cu-K.alpha. X ray-diffraction spectrum thereof and an alkyldiol which has 3 to 12 carbon atoms and the two hydroxyl group is bonded to carbon atoms arranged at different position in the molecular thereof. The amount of the diol is 0.1 to 1000 parts by weight per 100 parts by weight of the titanyl-phthalocyanine.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: September 27, 1994
    Assignee: Konica Corporation
    Inventors: Tomomi Oshiba, Fumitaka Mochizuki, Hajime Tadokoro, Akira Kinoshita, Kazumasa Watanabe, Kiyoshi Tamaki, Yoshihide Fujimaki
  • Patent number: 5310614
    Abstract: An electrophotographic photoreceptor is disclosed. The photoreceptor comprises a conductive support and a photosensitive layer provided thereon. The photosensitive layer contains a carrier generation material and a compound represented by the following formula 1, 2 or 3; ##STR1## wherein R.sub.1, R.sub.11 and R.sub.21 are each a hydrogen atom, an alkyl group, an alkoxy group, a cycloalkyl group, an alkenyl group, an aryl group, and aryloxy group or a heterocylic group; R.sub.2 to R.sub.9, R.sub.12 to R.sub.19 and R.sub.22 to R.sub.29 are independently a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a cycloalkyl group, an aryl group or a heterocyclic group, said groups represented by R.sub.1 to R.sub.9, R.sub.11 to R.sub.19 and R.sub.21 to R.sub.29 each may have a substituent selected form a halogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a thioether group, an acyl group and sulfonamido group.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: May 10, 1994
    Assignee: Konica Corporation
    Inventors: Hideo Yoshizawa, Kiyoshi Tamaki, Hajime Tadokoro, Yoshihide Fujimaki
  • Patent number: 5278014
    Abstract: Disclosed is an electrophotographic photoreceptor which comprises a conductive substrate and a photosensitive layer formed thereon, wherein the photosensitive layer contains a polysilane which is a homopolymer or a copolymer having at least one of repeating units represented by Formula (I) and Formula (II), and at least one of degradation inhibitors represented by Formula (III) through Formula (VIII), ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, an alkylsilyl group or an arylsilyl group, ##STR2## wherein A.sub.1 represents an oxygen atom or a sulfur atomR.sub.12 --A.sub.2 --COCOOH Formula (V)wherein R.sub.12 represents an aryl group or a substituted group, A.sub.2 represents --CH.sub.2 -- or --CH.dbd.CR.sub.13 --, R.sub.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: January 11, 1994
    Assignee: Konica Corporation
    Inventors: Kiyoshi Tamaki, Shigeki Takeuchi
  • Patent number: 5273852
    Abstract: An electrophotographic photoreceptor is disclosed. The photoreceptor comprises a conductive support and provided thereon, a layer comprising a carrier generating material and a polymer having a repetition unit represented by the following formula (1); ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkenyl group, an aryl group, an alkylsilyl group or an arylsilyl group, and n is a natural number.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: December 28, 1993
    Assignee: Konica Corporation
    Inventors: Shigeki Takenouchi, Kiyoshi Tamaki, Hideyuki Matsumoto
  • Patent number: 4952470
    Abstract: An electrophotographic photosensitive member having improved anti-oxidation properties by ozone, comprising a conductive substrate, disposed thereon, a photosensitive layer which includes, as principal constituents, a charge generating material and a charge transporting material, wherein the photosensitive layer contains at least one type of compound selected from a group of those represented by any of the following [A] through [D]:[A] Compounds represented by the following general formula [I]; ##STR1## [B] Bisspiroindene compounds represented by the following general formula [II]; ##STR2## [C] Bisspiroindene compounds represented by the following general formula [III]; ##STR3## [D] Compounds having in the molecular structure thereof at least one structure selected from the following groups; ##STR4## [wherein R represents a hydrogen atom, or organic substituent group.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: August 28, 1990
    Assignee: Konica Corporation
    Inventors: Kiyoshi Tamaki, Koichi Kudoh, Yoshihiko Etoh, Yoshiaki Takei
  • Patent number: 4888262
    Abstract: An image forming method which employs an electro-photographic photoreceptor having high sensitivity, high resistance to damage, high durability, and high resistance to ozone oxidation. The method comprises charging the surface of the photoreceptor with positive charge, the photoreceptor including a photoconductive base, a photoreceptive layer formed on the base and consisting of at least a layer having a charge transport function and a layer having a charge generating function, and a resin-containing non-photoreceptive layer formed on the photoreceptive layer as required, and in which one layer placed above the layer having a charge transport function contains an antioxidizing agent, forming an electrostatic latent image on the surface of the photoreceptor by image-like exposure, then developing the electrostatic latent image.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: December 19, 1989
    Assignee: Konica Corporation
    Inventors: Kiyoshi Tamaki, Koichi Kudoh, Yoshihiko Etoh, Yoshiaki Takei
  • Patent number: 4845006
    Abstract: A toner for developing electrostatic latent images is disclosed. This toner comprises as a binder a graft-polymer prepared by graft-polymerizing 99.5 to 92 parts by weight of a vinyl monomer to 0.5 to 8 parts by weight of an unsaturated polyester formed by condensing a polyvalent alcohol with a polybasic acid containing 5 to 90 mol % of unsaturated disbasic acid.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: July 4, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Akitoshi Matsubara, Kiyoshi Tamaki
  • Patent number: 4770969
    Abstract: Heat fusible toner for developing an electrostatic latent image comprising a heat fusible binder, a coloring agent, and optionally containing a magnetic substance, wherein the elasticity of the fused toner increases with time as it is kept in the fused state. The binder is preferably a polyester or polyamide obtained by condensing a polyvalent alcohol or amine with polyvalent carboxylic acids. The binder polymer preferably has at least one monomer component with three or more functional groups.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: September 13, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Meizo Shirose, Jiro Takahashi, Kenichi Kishi, Kiyoshi Tamaki, Akitoshi Matsubara
  • Patent number: 4600676
    Abstract: A toner composition in particle form for electrophotography comprising an inorganic material powder, e.g., a magnetic material, which is dispersed together with other additives in a binder resin toner composed of a polymer obtained by polymerizing a polymerizable monomer, e.g., a vinyl monomer, in the presence of a titanate coupling agent.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: July 15, 1986
    Inventors: Sadatugu Terada, Kiyoshi Tamaki, Hideki Murata, Akitoshi Matsubara, Tsuneo Wada, Hiroyuki Takagiwa
  • Patent number: 4520090
    Abstract: There is disclosed a magnetic toner comprising a magnetic powder and a compound having the following general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, A and M are the same as defined in the specification.The magnetic toner of the present invention has a high degree of blackening and permits the stable formation of a sharp image.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: May 28, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Yamazaki, Kiyoshi Tamaki
  • Patent number: 4507378
    Abstract: The invention relates to a method for producing a toner by polymerizing an aqueous suspension of a monomer in the presence of a dispersant selected from orthophosphate, pyrophosphate and polyphosphate, a colorant and an anionic surfactant. The polymerization product is then treated with dilute acid and rinsed with water whereby the dispersant is removed from the polymerization product.
    Type: Grant
    Filed: December 6, 1983
    Date of Patent: March 26, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tsuneo Wada, Kiyoshi Tamaki, Hideki Murata, Sadatugu Terada, Hiroyuki Takagiwa
  • Patent number: 4486559
    Abstract: Herein disclosed are a toner composition for the development of electrostatic latent images which comprises a polymer obtained by polymerizing a polymerizable monomer or monomers in the presence of a chlorinated polyolefin, and a method for preparing the same.
    Type: Grant
    Filed: June 23, 1981
    Date of Patent: December 4, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hideki Murata, Sadatugu Terada, Kiyoshi Tamaki, Tsuneo Wada, Akitoshi Matsubara, Hiroyuki Takagiwa