Patents by Inventor Masahiro Takaya

Masahiro Takaya 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: 6047544
    Abstract: In a catalyst unit which purifies the exhaust gas of an engine, a first layer comprising a zeolite hydrocarbon adsorbent is formed on a monolithic substrate. A catalyst layer comprising palladium, platinum or rhodium as a three way catalyst is formed on the first layer. The Geometrical Surface Area of the monolithic substrate is set in the range of 10-35 cm.sup.2 /cm.sup.3. The weight ratio of the first layer and the catalyst layer is set to from 9:1 to 1:4.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: April 11, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Shinji Yamamoto, Satomi Etou, Masahiro Takaya
  • Patent number: 5630116
    Abstract: A parent workstation 1 has a master file updating section 4 for updating master files 7, a delivery start notifying section 5 for forwarding the directory list of the master files 7 to a child work-station, and a master delivery section 6 for forwarding data or information requested by the child workstation; and the child workstation has a slave file updating section 11 for updating slave files 14, an updated asset registering section 12 for forwarding updated data or information to the master files 7, and a slave delivery section 13 for comparing the contents of the directory list of the master files 7 and those of the directory list of the slave files 14, and requesting the parent workstation 1 to forward the data or information which is found different.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: May 13, 1997
    Assignee: NEC Corporation
    Inventors: Masahiro Takaya, Hiroko Tsuji
  • Patent number: 5625844
    Abstract: In a program specification data transfer method for program development support system according to the present invention, if a program specification data program is updated in the editing by the specification data edit unit at the terminal, then the update flag of the applicable specification data program is set to indicate the existence of update by the update flag set unit. The updated data extract unit checks the update flag to extract the updated program specification data alone and thus extracted updated program specification data is transferred to the work file at the host computer. The specification data merge unit merges the updated program specification data stored in the work file with the program specification data in the program specification data file at the host computer and stores the merged result to the program specification data file.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 29, 1997
    Assignee: NEC Corporation
    Inventor: Masahiro Takaya
  • Patent number: 4981846
    Abstract: A novel crystalline L-carnosine zinc complex is produced by reacting L-carnosine, a zinc salt and an alkali metal compound in an anhydrous or hydrous polar organic solvent.The crystalline L-carnosine zinc complex substantially corresponds to the formula C.sub.9 H.sub.12 N.sub.4 O.sub.3 Zn and has physical properties clearly different from the known amorphous L-carnosine zinc complex.As compared with the amorphous complex, the crystalline complex is very low in impurity, stable to heat and moisture, and easy to filtrate, and has higher anti-ulcer activity.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: January 1, 1991
    Assignee: Hamari Chemicals, Ltd.
    Inventors: Takefumi Matsukura, Tamiko Takahashi, Yasuhiro Nishimura, Masahiro Takaya, Hajime Fujimura
  • Patent number: 4927817
    Abstract: A new preventive and therapeutic agent given by oral administration containing carnosine zinc salt as the effective component and, effective against alcoholic liver disorder, viral hepatitis or liver disorders caused by drugs, toxicants, radiation, etc.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: May 22, 1990
    Assignees: Zeria Pharmaceutical Co., Ltd., Hamari Chemicals, Ltd.
    Inventors: Tetsuya Inagaki, Eijiro Tagashira, Masahiro Takaya, Yasuhiro Nishimura
  • Patent number: 4490292
    Abstract: Novel 1,5-benzothiazepine derivatives having the formula; ##STR1## (wherein R.sub.1, R.sub.2 and R.sub.3 each denotes hydrogen, a halogen, a lower alkyl group, a lower alkoxy group or a hydroxy group; R.sub.4 denotes a lower alkyl group, an allyl group, a lower alkoxyalkyl group, a lower alkyl group substituted with a hydroxy group or a halogen, a lower alkylaminoalkyl group or a morpholino lower alkyl group; X denotes a halogen or hydrogen) are produced from corresponding 1,4-benzothiazine by a ring expansion reaction with trimethylhalosilane, hydrogen peroxide and water. The derivatives have analgesic, antipyretic and antiarrythmic activities.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: December 25, 1984
    Assignee: Hamari Chemicals, Ltd.
    Inventors: Yoshifumi Maki, Magoichi Sako, Naomichi Mitsumori, Sadayuki Maeda, Masahiro Takaya
  • Patent number: 4242512
    Abstract: Novel pyridazine-containing thioamide derivatives of the formula ##STR1## wherein R.sub.1 is ##STR2## wherein A is hydrogen, methyl, phenyl or mercapto, and B is hydrogen or phenyl; R.sub.2 is hydrogen or methyl; R.sub.3 is hydrogen, methyl or phenyl; R.sub.4 is hydrogen or methyl; and n is zero or 1. The derivatives have outstanding gastric antisecretory activity.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: December 30, 1980
    Assignee: Morishita Pharmaceutical Co., Ltd.
    Inventors: Masahiro Takaya, Toshihiro Yamada, Tomokazu Yuizono