Patents by Inventor Kazuhiko Nakajima

Kazuhiko Nakajima 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).

  • Patent number: 5686494
    Abstract: A pharmaceutical preparation for ameliorating nonulcer dyspepsia (NUD) or epigastric dysfunction complaints is provided. The present invention uses an aminobenzamide compound represented by the following formula (1) or a salt thereof: ##STR1## wherein each of R.sup.1 and R.sup.2 is independently a lower alkoxyl group; R.sup.3 is a hydrogen atom, a lower acyl group, a lower alkyl group, a lower alkoxycarbonyl group or a group represented by a formula --X--SO.sub.3 M where X is a lower alkylene group and M is an alkali metal or an alkaline earth metal; R.sup.4 is a hydrogen atom, a halogen atom or a lower alkoxyl group; R.sup.5 is an amino group, a morpholino group or a lower alkylamino group, where the alkyl moiety of the lower alkylamino group may have a hydroxyl group; and n is an integer of 1 to 6.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: November 11, 1997
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Masahide Asano, Kazuhiko Nakajima, Kazuhisa Furuhama, Satoshi Hatanaka, Keiko Kawarabayashi
  • Patent number: 5443812
    Abstract: Synthetic zeolite is stabilized to water by soaking it in an acid solution for a prolonged time. The stabilized synthetic zeolite does not exhibit alkalinity when it is dispersed in water at room temperature or elevated temperatures for 24 hours or more.
    Type: Grant
    Filed: January 7, 1993
    Date of Patent: August 22, 1995
    Assignee: Kanebo Ltd.
    Inventors: Kazuhiko Nakajima, Satoshi Ando, Akira Dohn, Hideo Yoshitome
  • Patent number: 5206195
    Abstract: Synthetic zeolite is stabilized to water by soaking it in a buffered acid solution for a prolonged time. The stabilized synthetic zeolite does not exhibit alkalinity when it is dispersed in water at room temperature for 24 hours or more, and exhibits improved flowability and almost constant ratios among Na, Al and O along the depth direction from the surface of the zeolite particles.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: April 27, 1993
    Assignee: Kanebo Ltd.
    Inventors: Satoshi Ando, Kazuhiko Nakajima, Akira Dohno
  • Patent number: 5196527
    Abstract: This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: March 23, 1993
    Assignee: Kanebo Ltd.
    Inventors: Shigeru Ookuma, Kouei Igarashi, Masami Hara, Kazuhiro Aso, Hideo Yoshidome, Hiroshi Nakayama, Keizo Suzuki, Kazuhiko Nakajima
  • Patent number: 5147086
    Abstract: A process for preparation of capsule for use in isostatic pressing treatment, the process comprising a first step of enclosing a material to be treated, such as ceramic, metal, resin, etc. with metallic foil having a thickness of from 30 to 300 .mu.m, and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, wherein the welding is carried out by means of TIG welding. Alternatively, the welding may be carried out by means of seam resistance welding. It is posible, by the process, to seal the material to be treated in a capsule easily and economically. The capsule thus obtained is in a good sealed condition, permits effective isostatic pressing treatment, and enables the treated material to be taken out easily. A ceramic or metal layer covers the material to be treated to prevent adhesion between the material and the metallic foil.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: September 15, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takao Fujikawa, Yasuo Manabe, Kazuhiko Nakajima
  • Patent number: 5108596
    Abstract: This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: April 28, 1992
    Assignee: Kanebo Ltd.
    Inventors: Shigeru Ookuma, Kouei Igarashi, Masami Hara, Kazuhiro Aso, Hideo Yoshidome, Hiroshi Nakayama, Keizo Suzuki, Kazuhiko Nakajima
  • Patent number: 5096518
    Abstract: Described herein is a method of encapsulating a material to be processed by warm or hot isostatic pressing, and an apparatus suitable for practicing the method, which basically includes the steps of (a) enveloping a processing material in the form of loose or compacted powder with a metal foil of 30 .mu.m in thickness, and (b) welding overlying and underlying metal foil portions to encapsulate said material in said metal foil in sealed state.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: March 17, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takao Fujikawa, Kazuhiko Nakajima, Yasuo Manabe