Patents by Inventor Shuzo Suzuki

Shuzo Suzuki 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: 20200294838
    Abstract: A substrate fixing device includes a base plate including therein a gas supply section, and an electrostatic chuck provided on the base plate. The electrostatic chuck includes a base having a mounting surface on which a target to be held by electrostatic attraction is mounted, an insertion hole, penetrating the base, having an inner surface that defines the insertion hole and is threaded to foLm a female thread, and a screw member, having an outer surface that is threaded to form a male thread, and inserted into the insertion hole to assume a mated state in which the male thread mates with the female thread. A gas from the gas supply section is supplied to the mounting surface via the screw member.
    Type: Application
    Filed: March 9, 2020
    Publication date: September 17, 2020
    Inventors: Tadayoshi YOSHIKAWA, Miki SAITO, Takahiko SUZUKI, Shuzo AOKI
  • Patent number: 6854897
    Abstract: The ferrule part 16 comprises ferrule 60, first and second optical fibers 62 and 64, and optical filter 68. Ferrule 60 has first and second end surface 60a and 60b, ferrule insertion hole 60c, and groove 68. Ferrule insertion hole 60c extends along a first axis, and accommodates first and second optical fibers 62 and 64. Groove 66 extends along a second axis crossing the first axis, and extends so as to extend across ferrule 60. Groove 66 is provided along a plane defined by the second axis and a third axis perpendicular to the first and second axes. Optical filter 68 can reflect a part of light incident on one surface 68b of the pair of surfaces of optical filter 68, and can transmit a part of the light incident on other surface 68a.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: February 15, 2005
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masaki Furumai, Shuzo Suzuki, Hitoshi Terauchi, Manabu Yoshimura, Kazuhito Saito, Manabu Shiozaki, Kazunori Yoshida
  • Publication number: 20030223701
    Abstract: The ferrule part 16 comprises ferrule 60, first and second optical fibers 62 and 64, and optical filter 68. Ferrule 60 has first and second end surface 60a and 60b, ferrule insertion hole 60c, and groove 68. Ferrule insertion hole 60c extends along a first axis, and accommodates first and second optical fibers 62 and 64. Groove 66 extends along a second axis crossing the first axis, and extends so as to extend across ferrule 60. Groove 66 is provided along a plane defined by the second axis and a third axis perpendicular to the first and second axes. Optical filter 68 can reflect a part of light incident on one surface 68b of the pair of surfaces of optical filter 68, and can transmit a part of the light incident on other surface 68a.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 4, 2003
    Inventors: Masaki Furumai, Shuzo Suzuki, Hitoshi Terauchi, Manabu Yoshimura, Kazuhito Saito, Manabu Shiozaki, Kazunori Yoshida
  • Patent number: 5214524
    Abstract: An optical communication system of the optical feed forward type in which a main optical signal and a distortion signal are transmitted by a common optical fiber line from the transmission part to the reception part.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: May 25, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masayuki Shigematsu, Akira Nishimura, Shuzo Suzuki
  • Patent number: 5184244
    Abstract: An optical communication arrangement (apparatus and method) employing intensity modulation. The parameters of the optical communication system that impose a maximum influence on the modulation distortion are monitored whenever necessary, and the operating parameters of the optical communication system can be corrected in accordance with the parameters being monitored. The system employs the intensity modulation in which a delaying mechanism having a low delay accuracy and a delaying mechanism having a high delay accuracy are provided to completely suppress the modulation distortion.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: February 2, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akira Nishimura, Shuzo Suzuki, Masayuki Shigematsu
  • Patent number: 5098459
    Abstract: A method of fabricating an optical branching and coupling device includes the steps of preparing at least a pair of coated optical fibers; partly stripping the coating of the optical fibers; and fixedly inserting the coating stripped portions of the optical fibers into a pair of comb-shaped grooves under a condition prior to a unification step which is free from tension and torsional stress in an optical axial direction to bring the coating stripped portions into contact with each other between the comb-shaped grooves. The method also includes the steps of melting the coating stripped portions thus contacting each other by heating to unify the coating stripped portions and extending the coating stripped portions in the optical axial direction while in the melted state.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: March 24, 1992
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masumi Fukuma, Shuzo Suzuki
  • Patent number: 4983012
    Abstract: An optical connector comprises an optical fiber guide member consisting of a grooved substrate and a cover plate, the substrate having optical fiber guide grooves and guide pin grooves cut into its top surface, and the cover plate being joined to the substrate to cover the optical fiber guide grooves but to leave at least part of the guide pin grooves exposed; a pressing member which is movable in the vertical direction of the guide pin grooves and is provided above the guide pin grooves to elastically press guide pins which are positioned on the guide pin grooves downward; and coupling clips enhancing the force of elastic pressure being exerted on the guide pins so as to secure the joining of optical fibers.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: January 8, 1991
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhito Saito, Toshiaki Kakii, Hidetoshi Ishida, Shuzo Suzuki
  • Patent number: 4952263
    Abstract: An optical connector and splicer including an optical fiber positioning member for optical coupling of optical fibers where the coupling is assisted by at least two guide pins. The optical fiber positioning member comprises a substrate plate and a flat plate. The substrate plate has optical fiber grooves and guide pin grooved each formed at one surface thereof for positioning the one optical fibers and said guide pins, respectively. The flat plate has a flat surface confronting with the grooves surface of the substrate plate. An exposed area is formed on a part of the substrate plate where said flat plate is not joined for facilitating an insertion of the optical fibers into the optical fiber grooves.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: August 28, 1990
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Yasuo Asano, Shuzo Suzuki
  • Patent number: 4950048
    Abstract: An optical connector ferrule for use in an optical coupling of optical fibers includes an insertion member, the insertion member comprising a guide capillary for positioning said optical fibers, which comprises a flat plate and a guide substrate having optical fiber guide grooves in one surface thereof, said flat plate being bounded to said guide substrate to form optical fiber guide holes into which said optical fibers are inserted; a reinforcing pipe for surrounding said guid capillary; and a resin-molded area provided between said guide capillary and said reinforcing pipe for insert-molding said guide capillary within said reinforcing pipe.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: August 21, 1990
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Yasuo Asano, Shuzo Suzuki, Koji Kashihara, Kazuhito Saito, Takeo Komiya
  • Patent number: 4840482
    Abstract: A method of identifying an aimed coated fiber in an optical transmission network. Identification of the aimed coated fiber in the optical transmission network is accomplished between its upstream and downstream ends during transmission of an optical signal without disrupting the capabilities of an optical communication network or causing deterioration of the optical signal being transmitted.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: June 20, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masayuki Shigematsu, Shuzo Suzuki
  • Patent number: 4832720
    Abstract: A multi-core optical fiber with improved dimensional accuracy is produced by a method comprisinginserting at least two core glass rods in bores formed in a cladding glass rod having a refractive index lower than that of the core glass rods to be inserted,heating a composite of the cladding glass rod and the core glass rods to integrate them together, anddrawing the integrated composite to fabricate a multi-core optical fiber.The drawing may be carried out simultaneously with the integration step.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: May 23, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Minoru Watanabe, Hiroshi Yokota, Shuzo Suzuki, Hiroshi Suganuma
  • Patent number: 4830456
    Abstract: An optical connector comprises an optical fiber connector ferrule which comprises a substrate plate having at least one optical fiber groove and pin grooves each being formed at one surface thereof, and a cover plate joined to the substrate plate to form at least one optical fiber groove holes into which an optical fiber is inserted; a guide pin means to be inserted into the pin grooves for coupling the optical fiber connector ferrule with another; and means for absorbing the variation in the diameter of the guide pin means.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: May 16, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Kazuhito Saito, Shuzo Suzuki
  • Patent number: 4820014
    Abstract: A tape and slot type optical cable having a core with groove dimensions that hold tape shaped optical fibers and also improve the transmission and mechanical strength characteristics of the optical cable. The dimensions require that for a groove having a depth D.sub.S and a width W.sub.S and a predetermined plurality n of optical fiber bundles of thickness T and width W.sub.T that the equations following equations be satisfied:1.2<(W.sub.S /W.sub.T)<1.451.3<(D.sub.S /nT)<1.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: April 11, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akira Nishimura, Shuzo Suzuki
  • Patent number: 4818059
    Abstract: An optical connector and splicer including an optical fiber positioning member for optical coupling of optical fibers where the coupling is assisted by at least two guide pins. The optical fiber positioning member comprises a substrate plate and a flat plate. The substrate plate has optical fiber grooves and guide pin grooves each formed at one surface thereof for positioning the one optical fibers and said guide pins, respectively. The flat plate has a flat surface confronting with the grooved surface of the substrate plate. An exposed area is formed on a part of the substrate plate where said flat plate is not joined for facilitating an insertion of the optical fibers into the optical fiber grooves.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: April 4, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Yasuo Asano, Shuzo Suzuki
  • Patent number: 4804247
    Abstract: A quartz optical fiber comprising a core having a higher refractive index and made of pure quartz containing fluorine and phosphorus pentoxide and a cladding having a lower refractive index, a weight ratio of fluorine and phosphorus pentoxide in the core being larger than 1 (one), which is substantially free from unstability of the glass structure.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: February 14, 1989
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph & Telephone Corporation
    Inventors: Michihisa Kyoto, Shuzo Suzuki, Minoru Watanabe, Motohiro Nakahara
  • Patent number: 4737009
    Abstract: Disclosed herein is an independent optical ferrule, an optical connector employing the independent ferrule, and replaceable plug unit employing the independent ferrule. Also disclosed is a method of using the replaceable plug unit employing the independent ferrule. The independent ferrule includes a stem portion having both ends each confronting ones of optical elements such as an end ferrule. The independent ferrule further includes at least one optical fiber held in a fixed position in the stem and having the both ends flush with the end faces of the stem. The independent ferrule also includes a collar adapted to serve as positioning member upon assembly of said independent ferrule into the optical connector or the replaceable plug unit.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: April 12, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Naoshi Hakamata, Yasuo Asano, Shuzo Suzuki
  • Patent number: 4729624
    Abstract: A ferrule for an optical connector made of a resin composition comprising a resin and carbon fiber as a filler having larger flexural strength and small mold shrinkage factor. The ferrule has a metal tube around its body that is embedded in its flange portion for added flexural rigidity.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: March 8, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Koichiro Matsuno, Shuzo Suzuki
  • Patent number: 4726647
    Abstract: An optical connector for joining ends of optical fibers, including an adapter formed with at least one claw and a plug coupled detachably with the adapter. The plug includes an insertion guide to be inserted into the adapter, an ejector and an urging member for urging the ejector in an axial insertion direction, while the insertion guide is formed, on its outer periphery, with a projection and a recess such that the claw is caused to ride over the projection into engagement with the recess at the time of coupling of the plug with the adapter.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: February 23, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Naoshi Hakamata, Shuzo Suzuki
  • Patent number: 4721586
    Abstract: An optical fiber cable plug manufacturing method providing easy connection between large numbers of optical fibers. The protective cover layer of an optical fiber cable is removed from its middle part to expose the coated optical fibers and the tensile strength member, and the tensile strength member is cut into two parts. Then, the coated optical fibers thus exposed are partially uncoated. Coupling members are disposed along the exposed parts of the optical fibers and molded together with the optical fibers with resin to provide a molding. The molding is cut perpendicularly to its longitudinal axis into two symmetrical parts, and the cut end faces are polished to provide two symmetrical optical fiber cable plugs.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: January 26, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Kakii, Naoshi Hakamata, Shuzo Suzuki
  • Patent number: 4715695
    Abstract: A fiber for optical transmission composed of a core having a substantially parabolic distribution of refractive index, a first cladding layer formed around the core having a refractive index equal to that of the periphery of the core and a thickness of 1/100 to 1/20 the diameter of the core, a second cladding layer formed around the first cladding layer having a refractive index smaller than that of the first cladding layer, and a third cladding layer formed around the second cladding layer having a refractive index greater than that of the second cladding layer. The fiber for optical transmission having such a structure has a broad bandwidth of transmitted light.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: December 29, 1987
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masayuki Nishimura, Shuzo Suzuki, Hiroshi Yokoto