Patents by Inventor Koichi Tamura

Koichi Tamura 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: 5260444
    Abstract: The present invention provides dihydropyridine derivatives represented by the following formula (I) ##STR1## and salts thereof. They have extremely strong, slow and long-acting vasodilating action and antihypertensive action with less adverse effects so that they are useful as therapeutic agents for cardiovascular diseases.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: November 9, 1993
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Terukage Hirata, Yasushi Yoshimura, Masanori Kakimoto, Koichi Tamura, Harunobu Amagase
  • Patent number: 5208245
    Abstract: The present invention provides dihydropyridine derivatives represented by the following formula (I) ##STR1## and salts thereof. They have extremely strong, slow and long-acting vasodilating action and antihypertensive action with less adverse effects so that they are useful as therapeutic agents for cardiovascular diseases.
    Type: Grant
    Filed: May 7, 1991
    Date of Patent: May 4, 1993
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Terukage Hirata, Yasushi Yoshimura, Masanori Kakimoto, Koichi Tamura, Harunobu Amagase
  • Patent number: 5188750
    Abstract: This invention provides:(A) an anti-icing composition comprising a silicone resin which is at least one condensate selected from the group consisting of:(i) a condensate of an alkoxydimethylsiloxane compound represented by the formula ##STR1## wherein R.sub.1 l is a methyl group or an ethyl group, A is an oxygen atom, an ethylene group or a 1,3-propylene group, a is an integer of 5 to 150, b and e are different or the same and each represent an integer of 1 to 3, c is an integer of 3-b and d is an integer of 3-e,(ii) a condensate of the compound of the formula (I) and an alkoxysilane compound represented by the formula(R.sub.3)h--Si--(OR.sub.2)j (II)wherein R.sub.2 is a methyl group or an ethyl group, R.sub.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: February 23, 1993
    Assignee: Kansai Paint Company, Limited
    Inventors: Hideo Kogure, Heihachi Murase, Koichi Tamura
  • Patent number: 5183675
    Abstract: A process for producing a salad oil comprises transesterifying a mixture of (A) an oil or fat produced from palm oil and having the following characteristics:______________________________________ iodine value: 55 to 75 constituent fatty acids: palmitic acid: 30 to 42% by weight oleic acid: 42 to 48% by weight linoleic acid: 11 to 20% by weight tripalmitin: 2% by weight or less open-tube melting point: 5 to 25.degree. C. ______________________________________and (B) a liquid edible oil other than the component (A) in a weight ratio of 5:95 to 95:5 with immobilized lipase having 1,3-specificity in the absence of solvent and then fractionating the product in the absence of solvent. Thereby, the salad oil can be efficiently derived from palm oil which is a solid oil and the relative amount of the starting material obtained from palm oil in the salad oil can be increased. The thus-produced salad oil has a satisfactory cooling resistance.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: February 2, 1993
    Assignee: The Nisshin Oil Mills, Ltd.
    Inventors: Koichi Tamura, Nobuo Taguchi, Satoshi Tashiro
  • Patent number: 4603695
    Abstract: An adhesion preventive for preventing adhesion between vital tissues is provided. The present adhesion preventive is a molded material consisting essentially of a biodegradable and absorbable polymer. It has an advantage of requiring no reoperation for its removal since it would be degraded and absorbed after completing its function in vivo.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: August 5, 1986
    Assignee: Japan Medical Supply Co., Ltd.
    Inventors: Yoshito Ikada, Shokyu Gen, Yasuhiko Shimizu, Koichi Tamura, Tatsuo Nakamura, Sosuke Kimura, Tsuneo Cho, Hideki Tadokoro, Kazuaki Hori
  • Patent number: 4537292
    Abstract: A disc brake including a stationary support member, a pair of friction pads disposed on the opposite surfaces of a rotatable disc, at least one friction pad being slidably mounted on the support member. A pair of locating and guiding devices are provided between the support member and one circumferential end of the friction pad. The devices are spaced in the direction of the radius of the disc, and at least one device includes a projection and recess engagement as viewed in the direction of the axis of the disc.
    Type: Grant
    Filed: January 5, 1984
    Date of Patent: August 27, 1985
    Assignee: Tokico Ltd.
    Inventor: Koichi Tamura
  • Patent number: 4498564
    Abstract: A floating caliper type disc brake wherein a caliper having two leg portions and a bridge portion straddles a rotatable disc and a pair of opposing friction pads are slidably mounted on a carrier. An axially elongated radial opening is formed in the bridge portion of the caliper to displaceably receive therein radially outwardly projecting projections formed on respective friction pads, and a guide member is located on the outer edge of the opening to engage with and retain respective retaining portions formed on respective projections. Pad springs act between the caliper and the friction pads for biassing the friction pads radially inwardly with respect to the caliper.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: February 12, 1985
    Assignee: Tokico Ltd.
    Inventor: Koichi Tamura
  • Patent number: 4390084
    Abstract: A mechanical disc brake, including a caliper supported on a stationary member to slide in the direction of the axis of rotation of a rotatable disc and straddling the circumference of the disc to define two limb portions on the opposite sides of the disc, a first friction pad being pressed against one surface of the disc by one of the limb portions, a second friction pad disposed so as to be opposed to the first friction pad and being pressed against another surface of the disc, a force converting mechanism provided in the other limb portion of the caliper for converting the rotation of a lever to thrust force pressing the second friction pad, a rod extending in the direction of the axis of the disc and threadingly engaging the force converting mechanism with one end thereof engaging the second friction pad, a spring retainer threadingly engaging the other end of the rod, and a coil spring acting between the spring retainer and the other limb portion of the caliper to bias the rod in the direction separating
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: June 28, 1983
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Koichi Tamura
  • Patent number: 4360080
    Abstract: A disc brake including a stationary member provided on one side of a rotatable disc, a caliper slidably mounted on the stationary member and having an arm portion straddling the disc, a mechanical brake actuating mechanism incorporated in the caliper to act on a first friction pad and through the arm portion a second friction pad, a pin mounted on the stationary member which extends to the other side of the disc for slidably supporting the second friction pad, the arrangement being such that the caliper can be displaced on the stationary member to form a space between the arm portion and the second friction pad, and the second friction pad can be dismounted from the pin by utilizing the space. A projection is formed on either the stationary member or the actuating lever to abut with the other of the stationary member and the actuating lever when the caliper is displaced on the stationary member in the direction forming the space and in the non-actuated condition of the brake.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: November 23, 1982
    Assignee: Tokico Ltd.
    Inventor: Koichi Tamura
  • Patent number: 4360082
    Abstract: A disc brake including a caliper member slidably supported on a stationary member, at least one pin provided on either of the caliper member and a stationary member, and a guide member mounted on the other of the caliper member and the stationary member and slidably engaging with the pin. A guide portion provided on the other of the caliper member and the stationary member and detachably mounting the guide member. The guide member can be detached from the guide portion by displacing the guide member in a direction transverse to the axis of the pin.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: November 23, 1982
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Hiroshi Ito, Koichi Tamura
  • Patent number: 4360081
    Abstract: A disc brake including a pair of friction pads disposed on opposite sides of a rotatable disc, a cliper straddling a portion of the circumference of the disc and incorporating therein an actuator for applying the friction pads against the disc, a stationary holder slidably mounting thereon the caliper, and a pad spring interposed between the caliper and the friction pads for biassing the friction pads in the radially inward direction with respect to the disc. The pad spring comprises two engaging portions which respectively extend in the direction of the axis of the disc for engaging with respective friction pads, and there are provided relief portions respectively between either one of the friction pads and either one of the engaging portions of the pad springs so that either one of the friction pads solely engaging with the other of the engaging portions.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: November 23, 1982
    Assignee: Tokico Ltd.
    Inventors: Hiroshi Ito, Koichi Tamura
  • Patent number: 4356896
    Abstract: A system which includes a micro-computer which is responsive to an elevator car reaching a predetermined distance from a terminal floor and arranged to calculate a residual distance between the actual position of the car and the floor so as to generate a command normal deceleration signal concerning that distance, and a command terminal deceleration generator which is responsive to the successive actuations of plural terminal sensors disposed adjacent of the floor within an associated hoistway so as to generate a command terminal deceleration signal which is successively decreased. When the car engages any of the terminal sensors, the micro-computer similarly calculates a residual distance between the position of the engaged terminal switch and the floor so as to generate a command auxiliary terminal deceleration signal concerning that distance.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: November 2, 1982
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koichi Tamura, Ryuichi Kajiyama, Shigemi Iwata
  • Patent number: 4343381
    Abstract: A disk brake comprising a stationary member secured to a non-rotatable part of a vehicle, a caliper supported on the stationary member through a pin to displace toward and away from a rotatable disc, a friction pad supported on a stepped portion formed on the stationary member to displace toward and away from the rotatable disc, a piston provided in the caliper to act on the friction pad, and a guide bore formed in the stationary member to slidably receive therein the pin secured to the caliper. A dust boot is provided to cover and protect the gap between the pin and the guide bore, and one end of the dust boot secured to the stationary member has a projection projecting toward the stepped portion, thereby restricting the displacement of the friction pad separating from the disc.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: August 10, 1982
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Koichi Tamura
  • Patent number: 4342381
    Abstract: A disc brake including a friction pad supported on a stationary member and being slidable in the direction of the axis of a rotatable disc, and a pad spring acting on the friction pad to bias it against the stationary member. A retaining portion is formed integrally on the pad spring to restrict the displacement of the friction pad in the direction separating from the disc.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: August 3, 1982
    Assignee: Tokico Ltd.
    Inventor: Koichi Tamura
  • Patent number: 4311214
    Abstract: A disc brake including a stationary member secured to a non-rotatable part of a vehicle, and a friction pad disposed on each side of a rotatable disc. There is provided a wear warning piece one end of which is secured to the stationary member and the other end of which extends between the disc and a backing plate of the friction pad by a predetermined distance.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: January 19, 1982
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Koichi Tamura
  • Patent number: 4296844
    Abstract: A floating caliper type disc brake including a caliper being slidably supported on a stationary member, a resilient member interposed between a sliding portion of the caliper and the stationary member, the caliper having a bridge portion extending over a portion of the circumference of a disc and a pawl portion rigidly connected to the bridge portion for acting on one of friction pads, and a pad spring interposed between the bridge portion of the caliper and friction pads. The improvement comprises in that a projection is formed on backing plate of the one friction pad, and a retaining portion is formed in the pawl portion of the caliper for engaging with the projection of the friction pad thereby receiving the biassing force of the pad spring.
    Type: Grant
    Filed: September 11, 1979
    Date of Patent: October 27, 1981
    Assignee: Tokico Ltd.
    Inventors: Koichi Tamura, Tetsuo Haraikawa
  • Patent number: 4284176
    Abstract: A mechanically operated disc brake of the type including a caliper slidably supported in the axial direction of a disc and straddling a peripheral portion of the disc, a pair of friction pads one of which is urged against the disc by a limb of the caliper, a cavity formed in another limb of the caliper, a nut member mounted in the cavity and being adapted to receive a rotational input force, a converting mechanism received in the cavity for converting the rotational movement of the nut member into axial movement thereof, a rod member screw-threadingly engaging with the nut member with the inner end abutting with the other friction pad for urging the same against the disc, and a rotation control member for controlling rotation of the nut member.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: August 18, 1981
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Koichi Tamura
  • Patent number: 4235007
    Abstract: An addition material in powder or particulate form comprising at least one addition agent selected from the group consisting of calcium, magnesium and aluminum is extruded to provide a compact core wire, which is enveloped by a tape of iron or steel. The tape is circularly shaped such that one widthwise marginal portion is folded tightly over the other widthwise marginal portion in overlapping relation. The tape thus shaped serves as a protective covering for the core wire. Great lengths of continuous wire can be manufactured by the continuous production process. The wire shaped composite addition material produced in this way is added to molten iron and steel by means of continuous wire feeding and hereby provides for effective deoxidation and desulfurization of such melts. Furthermore the linear additive is easy to handle and to store.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: November 25, 1980
    Assignee: Hitachi Cable, Ltd.
    Inventors: Kenkichi Yamaji, Oelhschlagel Dietrich, Hajime Abe, Koichi Tamura
  • Patent number: 4222465
    Abstract: A disc brake of the type including a stationary supporting member, a pair of friction pads supported on the supporting member and slidable in the direction of the axis of a rotatable disc, a caliper supported on the supporting member and slidable in the direction of the axis of the disc, a piston provided in the caliper for acting on one of friction pads to urge it against one surface of the disc, and a pad spring disposed between the caliper and the friction pads. The other of the friction pads is mounted on the supporting member such that the pad can be removed from the supporting member by displacing the friction pad and the caliper on the supporting member a predetermined distance past the normal operational range. The pad spring engages with the supporting member and with the other friction pad thereby limiting the displacement of the other friction pad with respect to the supporting member.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: September 16, 1980
    Assignee: Tokico Ltd.
    Inventors: Tetsuo Haraikawa, Koichi Tamura
  • Patent number: 4134196
    Abstract: An addition material in powder or particulate form comprising at least one addition agent selected from the group consisting of calcium, magnesium and aluminum is extruded to provide a compact core wire, which is enveloped by a tape of iron or steel. The tape is circularly shaped such that one widthwise marginal portion is folded tightly over the other widthwise marginal portion in overlapping relation. The tape thus shaped serves as a protective covering for the core wire. Great lengths of continuous wire can be manufactured by the continuous production process. The wire shaped composite addition material produced in this way is added to molten iron and steel by means of continuous wire feeding and hereby provides for effective deoxidation and desulfurization of such melts. Furthermore the linear additive is easy to handle and to store.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: January 16, 1979
    Assignee: Hitachi Cable Ltd.
    Inventors: Kenkichi Yamaji, Oelhschlagel Dietrich, Hajime Abe, Koichi Tamura