Patents by Inventor Yoshihisa Ohta

Yoshihisa Ohta 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: 20090051734
    Abstract: An imaging method is disclosed for realizing full color printing using an ink head configured to discharge black ink and a plurality of color inks. The imaging method involves printing a monochrome image portion by printing a plurality of first rasters using black ink and an arbitrary number of the color inks, and printing a second raster in between the first rasters using pseudo black ink that is realized by the remaining number of the color inks.
    Type: Application
    Filed: June 23, 2006
    Publication date: February 26, 2009
    Inventors: Takahiro Ike, Yoshihisa Ohta, Masakazu Yoshida, Takashi Kimura, Masanori Hirano
  • Patent number: 7470717
    Abstract: The present invention provides a compound represented by Formula (I): [wherein R1 represents CONR1aR1b (wherein R1a and R1b may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted ararkyl or a substituted or unsubstituted heterocyclic group, or R1a and R1b are combined together with the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group) or the like, R2 represents a hydrogen atom, CONR2aR2b (wherein R2a and R2b may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted ararkyl or a substituted or unsubstituted heterocyclic group, or R2a and R2b are combined together with the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group), NR2cR2d (wherein R2c and R2d may be the same or different and each represents a
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: December 30, 2008
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshihisa Ohta, Fumihiko Kanai, Shinji Nara, Yutaka Kanda, Hiroshi Umehara, Yukimasa Shiotsu, Tomoki Naoe, Hitoshi Kiyoi, Keiko Kawashima, Hiromi Ando, Motoki Miyama
  • Patent number: 7425636
    Abstract: (wherein R1 and R4 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R5 represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R2 represents —C(?W)R6 or the like; R3 represents a hydrogen atom, —C(?WA)R6A, or the like) Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: September 16, 2008
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Chikara Murakata, Kazuhiko Kato, Yoshihisa Ohta, Ryuichiro Nakai, Yoshinori Yamashita, Takeshi Takahashi
  • Publication number: 20080207706
    Abstract: (wherein R1 and R4 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R5 represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R2 represents —C(?W)R6 or the like; R3 represents a hydrogen atom, —C(?WA)R6A, or the like) Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
    Type: Application
    Filed: April 7, 2008
    Publication date: August 28, 2008
    Applicants: Kyowa Hakko Kogyo Co., Ltd, Fuji Photo Film Co., Ltd.
    Inventors: Chikara MURAKATA, Kazuhiko Kato, Yoshihisa Ohta, Ryuichiro Nakai, Yoshinori Yamashita, Takeshi Takahashi, Tomohisa Nakano, Yoji Ino
  • Patent number: 7361712
    Abstract: A water absorbing agent comprising a crosslinked polymer including a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) that is formed into the water-soluble vinyl monomer (a1) by hydrolysis, and a crosslinking agent (b) as an essential constituting unit, wherein the following formulae (1) and (2) are satisfied; a process for its production, and absorbers and absorbent articles made by the water absorbing agent. (Y)??1.14(X)+69.5 ??(1) (X)=((x1)2+4×(x2)2)1/2 ??(2) wherein (x1) denotes a water-retention amount (g/g) of the water absorbing agent after being soaked in a physiological saline for one hour; (x2) denotes an absorption amount (g/g) of the water absorbing agent after being soaked in a physiological saline under loading of 0.9 psi for one hour; and (Y) denotes a liquid permeation speed (ml/min) of a physiological saline after the water absorbing agent is soaked in a physiological saline under loading of 0.3 psi for one hour.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: April 22, 2008
    Assignee: San-Dia Polymers, Ltd.
    Inventors: Munekazu Satake, Yoshihisa Ohta
  • Publication number: 20080024536
    Abstract: A disclosed image forming apparatus includes a line-type liquid discharging head including nozzles configured to jet liquid droplets. The nozzles are aligned in a sheet width direction. The line-type liquid discharging head includes plural nozzle rows each including an alignment of a plurality of the nozzles configured to discharge liquid droplets of the same color. A distance L1 between the nozzle rows is L1=T11×V1, where T1 is a liquid transfer amount impregnating time of a standard sheet and V1 is a sheet conveying speed.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 31, 2008
    Inventors: Masanori Hirano, Yoshihisa Ohta, Masakazu Yoshida, Shigeaki Kimura, Naoya Morohoshi, Tomohiro Inoue, Takahiro Yoshida
  • Publication number: 20080018703
    Abstract: An imaging apparatus is disclosed that includes plural heads that are arranged in a main scanning direction, the heads including plural nozzle arrays that are arranged in the main scanning direction and configured to discharge droplets of recording liquids in at least three different colors including a yellow recording liquid. At least two of the nozzle arrays that are configured to discharge the yellow recording liquid are separately arranged in at least two of the heads. At least two of the nozzle arrays that are configured to discharge a first recording liquid of the recording liquids in a first color other than yellow are arranged together in one of the heads. At least two of the nozzle arrays that are configured to discharge a second recording liquid of the recording liquids in a second color other than yellow are arranged together in one of the heads.
    Type: Application
    Filed: April 21, 2006
    Publication date: January 24, 2008
    Inventors: Naoki Nakano, Shigetoshi Hosaka, Takashi Kimura, Yoshihisa Ohta, Toshihito Kamei, Masakazu Yoshida
  • Publication number: 20070213380
    Abstract: (wherein R1 and R4 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R5 represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R2 represents —C(?W)R6 or the like; R3 represents a hydrogen atom, —C(?WA)R6A, or the like) Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
    Type: Application
    Filed: May 11, 2007
    Publication date: September 13, 2007
    Applicants: Kyowa Hakko Kogyo Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Chikara Murakata, Kazuhiko Kato, Yoshihisa Ohta, Ryuichiro Nakai, Yoshinori Yamashita, Takeshi Takahashi, Tomohisa Nakano, Yoji Ino
  • Publication number: 20070117856
    Abstract: The present invention provides a compound represented by Formula (I): [wherein R1 represents CONR1aR1b (wherein R1a and R1b may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted ararkyl or a substituted or unsubstituted heterocyclic group, or R1a and R1b are combined together with the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group) or the like, R2 represents a hydrogen atom, CONR2aR2b (wherein R2a and R2b may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted ararkyl or a substituted or unsubstituted heterocyclic group, or R2a and R2b are combined together with the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group), NR2cR2d (wherein R2c and R2d may be the same or different and each represents
    Type: Application
    Filed: July 30, 2004
    Publication date: May 24, 2007
    Applicant: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshihisa Ohta, Fumihiko Kanai, Shinji Nara, Yutaka Kanda, Hiroshi Umehara, Yukimasa Shiotsu, Tomoki Naoe, Hitoshi Kiyoi, Keiko Kawashima, Hiromi Ando, Motoki Miyama
  • Publication number: 20060281789
    Abstract: The present invention provides a protein kinase inhibitor (excluding c-Jun N-terminal kinase inhibitor) which comprises, as an active ingredient, an indazole derivative represented by Formula (I) (wherein R1 represents substituted or unsubstituted aryl or a substituted or unsubstituted heterocyclic group) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 30, 2004
    Publication date: December 14, 2006
    Applicant: KYOWA HAKKO KOGYO CO., LTD
    Inventors: Yukimasa Shiotsu, Hiroshi Umehara, Fumihiko Kanai, Shinji Nara, Yoshihisa Ohta, Yutaka Kanda, Shiro Akinaga, Tomoki Naoe, Hitoshi Kiyoi, Tomoyuki Nakazato, Satoshi Tashiro
  • Patent number: 7122226
    Abstract: To provide a liquid crystal aligning agent which can provide a liquid crystal display element having a liquid crystal alignment film provided with alignability for liquid crystal molecules by rubbing without fail and having excellent liquid crystal alignability. The liquid crystal aligning agent comprises at least one selected from a polyamic acid having a specific structure having 2 or 3 rings, and an imidized polymer of the polyamic acid and further having alkyl group having the main chain with 8 or more carbon atoms, perfluoroalkyl group having the main chain with 3 or more carbon atoms, or 1,1-cycloalkylene group having 6 or more carbon atoms which may be substituted.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: October 17, 2006
    Assignee: JSR Corporation
    Inventors: Shigeo Shimizu, Yoshihisa Ohta
  • Publication number: 20060181562
    Abstract: An image reproducing and forming apparatus comprises a recording head (14) configured to eject liquid droplets of at least one color and capable of bidirectional recording, and a controller (100) configured to control the amount of liquid adhering to a recording paper (3) so as to reduce color difference occurring in the bidirectional recording. The controller includes a gamma correction unit (133) configured to selectively perform a controlled gamma correction using a controlled gamma value adjusted so as to reduce the color difference or an ordinary gamma correction using an ordinary gamma value.
    Type: Application
    Filed: July 30, 2004
    Publication date: August 17, 2006
    Inventors: Masanori Hirano, Yoshihisa Ohta, Takashi Kimura, Masakazu Yoshida
  • Publication number: 20060074113
    Abstract: (wherein R1 and R4 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R5 represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R2 represents —C(?W)R6 or the like; R3 represents a hydrogen atom, —C(?WA)R6A, or the like) Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
    Type: Application
    Filed: December 11, 2002
    Publication date: April 6, 2006
    Inventors: Chikara Murakata, Kazuhiko Kato, Yoshihisa Ohta, Ryuichiro Nakai, Yoshinori Yamashita, Takeshi Takahashi, Tomohisa Nakano, Yoji Ino
  • Patent number: 7005430
    Abstract: A condensed purine derivative represented by Formula (I): wherein X—Y-Z represents R1N—C?O or N?C—W, R2 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted alicyclic heterocyclic group or the like, n represents an integer of from 0 to 3, V1 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aromatic heterocyclic group, V2 represents a substituted lower alkyl group or a substituted or unsubstituted aromatic heterocyclic group, and when V1 represents a hydrogen atom, a lower alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group, and for example, X—Y-Z represents R1aN—C?O and R2 represents a substituted lower
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: February 28, 2006
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kimihisa Ueno, Akira Ogawa, Yoshihisa Ohta, Yuji Nomoto, Kotaro Takasaki, Hideaki Kusaka, Hiroshi Yano, Chiharu Nakagawa, Satoshi Nakanishi
  • Patent number: 6991324
    Abstract: In a solution emitting head for emitting a solution through an outlet, having a main body including a cavity, a cover attached to the main body in such a manner that the cover covers the cavity to form a chamber so that the solution is stored in the chamber temporarily before being emitted from the outlet, and a solution pressurizing device for pressurizing the solution in the chamber, the cover is fixedly attached to the main body by one of metal-to-metal bonding and an adhesive dissolution-resistant against the solution between the cover and the main body.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: January 31, 2006
    Assignees: Sharp Kabushiki Kaisha, Hitachi Industries Co., Ltd., JSR Corporation
    Inventors: Naoki Watase, Hironori Toyoshima, Tsuneyoshi Shimizu, Makoto Nakahara, Daisuke Ikesugi, Takatoshi Kira, Yoshihisa Ohta
  • Publication number: 20050080194
    Abstract: A water absorbing agent comprising a crosslinked polymer including a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) that is formed into the water-soluble vinyl monomer (a1) by hydrolysis, and a crosslinking agent (b) as an essential constituting unit, wherein the following formulae (1) and (2) are satisfied; a process for its production, and absorbers and absorbent articles made by the water absorbing agent. (Y)??1.14(X)+69.5 ??(1) (X)=((x1)2+4×(x2)2)1/2 ??(2) wherein (x1) denotes a water-retention amount (g/g) of the water absorbing agent after being soaked in a physiological saline for one hour; (x2) denotes an absorption amount (g/g) of the water absorbing agent after being soaked in a physiological saline under loading of 0.9 psi for one hour; and (Y) denotes a liquid permeation speed (ml/min) of a physiological saline after the water absorbing agent is soaked in a physiological saline under loading of 0.3 psi for one hour.
    Type: Application
    Filed: November 18, 2002
    Publication date: April 14, 2005
    Applicant: SAN-DIA POLYMERS, LTD.
    Inventors: Munekazu Satake, Yoshihisa Ohta
  • Publication number: 20040031950
    Abstract: To provide a liquid crystal aligning agent which can provide a liquid crystal display element having a liquid crystal alignment film provided with alignability for liquid crystal molecules by rubbing without fail and having excellent liquid crystal alignability.
    Type: Application
    Filed: April 29, 2003
    Publication date: February 19, 2004
    Applicant: JSR CORPORATION
    Inventors: Shigeo Shimizu, Yoshihisa Ohta
  • Publication number: 20030210303
    Abstract: In a solution emitting head for emitting a solution through an outlet, having a main body including a cavity, a cover attached to the main body in such a manner that the cover covers the cavity to form a chamber so that the solution is stored in the chamber temporarily before being emitted from the outlet, and a solution pressurizing device for pressurizing the solution in the chamber, the cover is fixedly attached to the main body by one of metal-to-metal bonding and an adhesive dissolution-resistant against the solution between the cover and the main body.
    Type: Application
    Filed: March 13, 2003
    Publication date: November 13, 2003
    Inventors: Naoki Watase, Hironori Toyoshima, Tsuneyoshi Shimizu, Makoto Nakahara, Daisuke Ikesugi, Takatoshi Kira, Yoshihisa Ohta
  • Publication number: 20030176698
    Abstract: A condensed purine derivative represented by Formula (I): 1
    Type: Application
    Filed: October 22, 2002
    Publication date: September 18, 2003
    Inventors: Kimihisa Ueno, Akira Ogawa, Yoshihisa Ohta, Yuji Nomoto, Kotaro Takasaki, Hideaki Kusaka, Hiroshi Yano, Chiharu Nakagawa, Satoshi Nakanishi
  • Patent number: 6576393
    Abstract: Disclosed are a composition for a resist underlayer film excellent in reproducibility of a resist pattern, excellent in adhesion to a resist, excellent in resistance to a developing solution used after exposure of the resist and decreased in film loss in oxygen ashing of the resist; and a method for producing the same, the composition comprising: both or either of a hydrolysate and a condensate of (A) at least one compound selected from the group consisting of (A-1) a compound represented by the following general formula (1): R1aSi(OR2)4−a  (1) wherein R1 represents a hydrogen atom, a fluorine atom or a univalent organic group, R2 represents a univalent organic group, and a represents an integer of 0 to 2, and (A-2) a compound represented by the following general formula (2): R3b(R4O)3−bSi—(R7)d—Si(OR5)3−cR6c  (2) wherein R3, R4, R5 and R6, which may be the same or different, each represent univalent organic groups, b and c, which may be the same or diffe
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: June 10, 2003
    Assignee: JSR Corporation
    Inventors: Hikaru Sugita, Akio Saito, Kinji Yamada, Michinori Nishikawa, Yoshihisa Ohta, Yoshiji Yuumoto