Patents by Inventor Hiromi Maeda

Hiromi Maeda 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: 20040102834
    Abstract: The present invention provides a stent which is flexible in the axial direction prior to the expansion of the stent, which shows no contraction in the axial length of the stent during expansion of the stent, which has an extremely large resistance to forces exerted by contracting blood vessels after expansion, which can cause uniform expansion of the struts of the stent, and in which there is no problem of the end portions of the stent warping to a greater diameter than the central portion of the stent at the time of expansion, furthermore a stent in which the size of the basic cells that constitute the stent is reduced so that bulging of endothelial cells of vascular tissues into the inside of the stent is suppressed, furthermore a stent which allows Y stenting into branched blood vessels while maintaining a high radial force and superior scaffold properties.
    Type: Application
    Filed: December 8, 2003
    Publication date: May 27, 2004
    Inventors: Ryoji Nakano, Hiromi Maeda, Shogo Miki
  • Patent number: 6711692
    Abstract: A data processing unit includes a first power supply consisting of a stable power supply, a central unit operating on the firsts power supply, a second power supply, a peripheral unit operating on the second power supply, an interface block for transferring an external signal to the peripheral unit, and a power-down detector operating on the first power supply and connected to the second power supply, for detecting a power down of the second power supply and for generating a signal informing of the power down when it occurs. This power down signal can prevent supply of the external input signal to the central unit. The data processing unit solves problems of conventional data processing units including separate central unit and peripheral power supplies in that an unexpected power down of the peripheral use power supply can cause malfunctions of the central unit because of, e.g., an undesired interrupt signal.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 23, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Hiromi Maeda, Yukihiko Shimazu, Masayuki Hata
  • Patent number: 6706010
    Abstract: It is an object of the present invention to provide a balloon catheter in which the inner tube is prevented from slackening after balloon inflation, improving the rewrapping of the balloon, discontinuity in the rigidity of the joined portions of the outer tube and the balloon is lessened, which prevents breakage, and the catheter advances through blood vessels better and passes more easily through narrow segments, preventing the catheter from “accordioning” and enhancing insertion force transmission. The balloon catheter pertaining to the present invention has a catheter shaft (1) with a double-tube structure comprising an outer tube (4) and an inner tube (5), and a balloon (3) disposed at the distal end portion of this catheter shaft (1).
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: March 16, 2004
    Assignee: Kaneka Corporation
    Inventors: Shogo Miki, Kohei Fukaya, Takuji Nishide, Masato Hashiba, Ryoji Nakano, Hiromi Maeda
  • Patent number: 6613066
    Abstract: A balloon catheter 1 is configured so as to comprise a catheter shaft 2 formed by joining a proximal-side tubular member 3 and a distal-side tubular member 4, an adapter member 6 connected to the base end of the catheter shaft 2, and a balloon 5 joined to the distal end of the catheter shaft 2. A metal coiled elastic member 10 is deployed in the internal space in the adapter member 6, so that it can move toward the distal end. This coiled elastic body 10 abuts on a ring-shaped wall part 11a formed on the outer circumferential surface of the base end of an elastic force transmitting member 11 and supports the elastic force transmitting member 11 to the distal side. The leading end of a linear member 12 that is one of the components of the elastic force transmitting member 11 reaches to an internal space 5f in the balloon and is bonded to the outer circumferential surface of a guide wire passing tube 7.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: September 2, 2003
    Assignee: Kaneka Corporation
    Inventors: Kohei Fukaya, Hiromi Maeda, Takuji Nishide, Shogo Miki, Ryoji Nakano, Masato Hashiba
  • Publication number: 20020041835
    Abstract: A purifier to purify exhaust gas includes a case, a plurality of metal sheets disposed in the case, a catalyst held to each of the metal sheets, partition plates disposed between the respective metal sheets, a metallic pipe disposed piercing through the metal sheets, and a catalyst heater disposed in the metallic pipe. The plurality of metal sheets are arranged at predetermined intervals, and each of the metal sheets has at least one through-hole. The partition plates serve to partition the spaces between the respective metal sheets. The exhaust gas is circulated through the spaces between the respective metal sheets and then passes through the through-holes and is exhausted from the outlet of the case. In this way, it is possible to increase the number of metal sheets without increase of the pressure loss and to enlarge the outer diameter of same. As a result, the exhaust gas purifying capacity will be improved.
    Type: Application
    Filed: August 20, 2001
    Publication date: April 11, 2002
    Inventors: Motomichi Mishima, Mitsuyasu Ogawa, Yoshiyuki Higashiyama, Shigehiko Shimomura, Tadashi Matsuyo, Seiichi Ueno, Hiromi Maeda, Masahiro Kimura
  • Patent number: 6339821
    Abstract: A data processor is provided to increase the number of instructions it can handle, even with a large number of operands required for the instructions. The data processor comprises a decoding circuit (1) extracting bits (a1, a2) of an instruction as first operand fields and decoding an operation code, using the remaining bits (a4); an operand-field storage portion (3) including a first operand-field storage portion (3a) storing bits (a1, a2) obtained from the decoding circuit (1) via a selector (2), and a second operand-field storage portion (3b) storing a second operand field obtained on the basis of those bits (a2); and a data processing portion (5) receiving the first and the second operand fields from the operand-field storage portion (3) and processing data in registers designated by the first and the second operand fields.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: January 15, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiromi Maeda, Akihiko Ishida, Yukihiko Shimazu
  • Patent number: 5968145
    Abstract: A data processing unit capable of solving a conventional problem in that a CPU cannot acquire the right of using a bus as long as a DMAC (Direct Memory Access Controller) has that right, and hence the operating ratio of the CPU reduces. A CPU bus is kept disconnected from the DMAC bus as long as the CPU disables the access request to a memory connected to the DMAC bus, and is connected to a DMAC bus in response to the access request unless the DMAC has the right of using a DMAC bus.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: October 19, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiromi Maeda, Masayuki Hata
  • Patent number: 5969931
    Abstract: An electronic apparatus includes a locker having a plurality of shelves, and a plurality of packages 25 are inserted in the respective shelves from the front thereof. Back boards are arranged in the locker at the rear of the shelves. A plurality of back connector boards are attached to the locker from the rear thereof. The connector of the package is plugged-in to the front the connector of the back board, and the connector of the back connector board is plugged-in to the rear connector of the back board. The back connector board also has external line connectors and an interface circuit or other circuits such as a radio interference reducing circuit and a lightning arrester.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: October 19, 1999
    Assignee: Fujitsu Limited
    Inventors: Hiromi Maeda, Nobuhiro Izumi, Nobuo Ikeda
  • Patent number: 5966409
    Abstract: A data transmission unit having a clock generating circuit for generating a continuous transfer clock signal which is always output from the data transmission unit regardless of presence or absence of transmission and reception; a data converter for converting parallel data to serial data; and a data transfer circuit for transferring the serial data in synchronism with the transfer clock signal. It can achieve the transmission of the serial data at high speed and with high reliability.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: October 12, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiromi Maeda, Katsunori Suzuki
  • Patent number: 5919171
    Abstract: A microcatheter for infusion in which a tip portion of its shaft 2 comprises a porous tubular structure 3 having no communicating pores is provided. It can be inserted into fine peripheral blood vessels along a guiding wire and/or on a blood stream, and thus a contrast medium, a curative drug, an embolismic substance or the like can be infused in the desired portion.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: July 6, 1999
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuaki Kira, Hiromi Maeda, Shuji Isozaki
  • Patent number: 5835736
    Abstract: A serial data transmission unit which can freely set a holding interval T of the final bit of transmitted data. It includes a holding interval decision portion for determining the holding interval T in accordance with a predetermined integer multiple of the period of a bus clock signal. It can solve a problem of a conventional system in that the dividing value of the bus clock set in a controller must undergo a wide range adjustment in accordance with one of external slaves which requires the longest holding interval when the holding intervals of data differ among the external slaves.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: November 10, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiromi Maeda, Katsunori Suzuki
  • Patent number: 5572255
    Abstract: An image reading apparatus and method in which a plurality of photoelectric energy converting elements disposed in a one-dimensional array is divided every m elements into n first blocks B.sub.1, B.sub.2, . . . , B.sub.n, driving voltages are applied sequentially to the units of m photoelectric energy converting elements in the first blocks B.sub.1, B.sub.2, . . . , B.sub.n, and the electrical signals of the photoelectric energy converting elements are read out. The drive side on which the driving voltage is sequentially applied to the above-mentioned divided n first blocks, B.sub.1, B.sub.2, . . . , B.sub.n is further divided every x first blocks into y second blocks C.sub.1, C.sub.2, . . . , C.sub.y, and are provided a first voltage application means which applies a first driving voltage (D1, D2, . . . , Dy) in sequence to the units of x first blocks B.sub.1, B.sub.2, . . . , B.sub.x in the second blocks C.sub.1, C.sub.2, . . . , C.sub.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: November 5, 1996
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Murakami, Hiromi Maeda, Yoichi Hosokawa
  • Patent number: 5422511
    Abstract: The invention seeks to reduce residual image in the vertical direction, which is the most significant drawback in the charge storage system, and further to permit increased speed of operation to be obtained.To this end, an image sensor of matrix drive type according to the invention comprises m by n diode pairs each including a photo- and a blocking diode PD and BD with the cathode electrodes thereof connected in series, the diode pairs constituting n blocks B.sub.1,B.sub.2 . . . , Bn each of m diode pairs. A clamp diode CD is connected to the juncture between the photo- and blocking diodes PD and BD in each diode pair to clamp the potential on the juncture and thus permit complete and quick charging of the capacitance of the photo-diode PD.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: June 6, 1995
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoichi Hosokawa, Tadashi Obayashi, Shinichiro Kurata, Satoru Murakami, Hiromi Maeda, Takeharu Yamawaki
  • Patent number: 5013768
    Abstract: A photopolymerizable coating composition comprising:(A) 100 parts by weight of a vehicle consisting essentially of a urethaneacrylate oligomer;(B) from 0.1 to 5 parts by weight of an acylphosphine oxide compound as a photoinitiator;(C) from 1 to 100 parts by weight of a color pigment; and(D) from 20 to 300 parts by weight of a transparent glass powder having an average particle size of not larger than 100 .mu.m and an index of refraction which does not differ more than 0.3 from the index of refraction of the composition excluding the color pigment.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: May 7, 1991
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Yoshiyuki Kiriyama, Kazuyuki Moriga, Toshio Shinohara, Mitsuhiro Matsuda, Hiromi Maeda
  • Patent number: 4914147
    Abstract: A heavy duty pneumatic tire for use in construction vehicles, truck and bus is disclosed, which comprises a tread rubber having improved cut resistance, resistance to rib tear, wear resistance, resistance to heat build-up, processability and the like. The tread rubber comprises 20-100 parts by weight of a particular modified styrene-butadiene copolymer and 80-0 parts by weight of other diene series rubber as a rubber component and contains 40-80 parts by weight of a particular carbon black based on 100 parts by weight of the rubber component.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: April 3, 1990
    Assignees: Bridgestone Corporation, Japan Synthetic Rubber Co., Ltd.
    Inventors: Hiroshi Mouri, Hiromi Maeda