Patents by Inventor Masahiro Kawase

Masahiro Kawase 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: 5684659
    Abstract: A magnetic head includes a first core having magnetic materials joined together through a magnetic gap, a second core having a magnetic material, and a coil formed with a thin film around a magnetic joining part between the first core and the second core.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: November 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kawase, Makoto Kameyama, Takahiro Nakagawa
  • Patent number: 5416212
    Abstract: An anilide compound represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represent an alkyl group having 1 to 4 carbon atoms; n represents 0, 1 or 2; A represents an alkylene group having 1 to 14 carbon atoms or a group represented by --CH.sub.2 CO--; and Ar represents a phenyl group, a phenyl group substituted with a halogen atom, a nitro group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkanoyl group having 2 to 5 carbon atoms or a trifluoromethyl group, a benzyl group, a pyridyl group, a pyridyl group substituted with a halogen atom or a trifluoromethyl group, or a pyrimidyl group, or a salt thereof. The disclosed anilide compounds have potent ACAT inhibitory activity.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: May 16, 1995
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Masakazu Sato, Masahiro Kawase, Akira Manaka, Yutaka Kawashima, Katsuo Hatayama
  • Patent number: 5393869
    Abstract: Disclosed are peptides and salts thereof represented by general formul ##STR1## wherein R.sub.1 represents Ser or Aib; R.sub.2 represents Met or a naturally occurring hydrophobic amino acid; R.sub.3 represents Leu, Ser, Lys or an aromatic amino acid; R.sub.4 represents Gly or a D-.alpha.-amino acid; R.sub.5 represents Lys or Leu; R.sub.6 represents Met or a naturally occurring hydrophobic amino acid; R.sub.7 represents Glu or a basic amino acid; R.sub.8 represents Val or basic amino acid; R.sub.9 represents Trp or 2-(1,3-dithiolane-2-yl)Trp; R.sub.10 represents Arg or His; R.sub.11 represents Lys or His; R.sub.12 represents Lys, Gln or Leu; and R.sub.13 represents Phe or Phe-NH.sub.2 ; except that simultaneously R.sub.1 consists of Ser, R.sub.2 consists of Met, R.sub.3 consists of Leu, R.sub.4 consists of Gly, D-Ala or D-Pro, R.sub.5 consists of Lys, R.sub.6 consists of Met, R.sub.7 consists of Glu, R.sub.8 consists of Val, R.sub.9 consists of Trp, R.sub.10 consists of Arg, R.sub.11 consists of Lys and R.sub.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: February 28, 1995
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shizue Nakagawa, Tsunehiko Fukuda, Masahiro Kawase, Iwao Yamazaki
  • Patent number: 5202806
    Abstract: A magnetic head having a single crystal ferrite core, a magnetic gap formed in the ferrite core, a high saturation flux metal film disposed in close proximity to the magnetic gap, and a sliding surface. This sliding surface is formed on a surface of the ferrite core, and a recording medium slides thereon relative to the ferrite core in a sliding direction. The sliding surface is in the (110) plane, and the easy magnetization directions <100> of the (110) plane makes an angle equal to or greater than 20.degree. with the sliding direction. With this arrangement, the wiggle phenomenon can be effectively prevented.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: April 13, 1993
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Masahiro Kawase
  • Patent number: 4952689
    Abstract: A 2-azetizinone derivative represented by the formula: ##STR1## wherein R.sup.1 is a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or an alkoxycarbonyl group in which the alkoxy group has 1 to 4 carbon atoms, R.sup.2 is a group represented by the formula ##STR2## a pyrrolidinyl group or a tetrahydroazepinyl group, and n is an integer of from 2 to 10, and a salt thereof are disclosed. These compounds are useful as blood platelet aggregation inhibiting agent.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: August 28, 1990
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Yutaka Kawashima, Masakazu Sato, Masahiro Kawase, Yoshiaki Watanabe, Katsuo Hatayama
  • Patent number: 4916563
    Abstract: In a magnetic head of the type comprising a pair of core halves which are disposed in opposing and aligned relationship leaving a magnetic gap therebetween, a magnetic-gap-defining surface of at least one core block being deposited with a thin magnetic film, grooves are formed in order to define the length of the magnetic gap at the recording medium sliding surface; a first nonmagnetic material is filled at the bottom portion of each groove and filling a second nonmagnetic material having a low melting point with respect to that of the first nonmagnetic material in the remaining portion of each groove. The nonmagnetic material having a relatively high melting point is disposed at both sides of the magnetic gap so that nonuniform wear of a portion in the vicinity of the magnetic gap can be substantially avoided.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: April 10, 1990
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Masahiro Kawase
  • Patent number: 4914805
    Abstract: In the magnetic head having, in the magnetic recording medium sliding surface, a first magnetic gap followed by a second magnetic gap in the medium sliding direction, the medium sliding surface is provided with a plurality of parallel grooves to each other extending obliquely with respect to the medium sliding direction, and the positions of the first and second magnetic gaps on the medium sliding surface are defined by the plurality of grooves.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: April 10, 1990
    Inventor: Masahiro Kawase