Patents by Inventor Eiji Koda

Eiji Koda 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: 20250023329
    Abstract: Provided is a surface emitting element capable of imparting a special characteristic to an element portion. A surface emitting element according to the present technology provides a surface emitting element including at least one element portion including: a light emitting layer; and a concave mirror disposed on one side of the light emitting layer, in which the concave mirror includes: a concave mirror body; and a structure including a protrusion or a recess. According to the present technology, it is possible to provide a surface emitting element capable of imparting a special characteristic to an element portion.
    Type: Application
    Filed: October 27, 2022
    Publication date: January 16, 2025
    Inventors: KENTARO HAYASHI, TATSUSHI HAMAGUCHI, EIJI NAKAYAMA, TATSUROU SATOU, HIDEKAZU KAWANISHI, RINTARO KODA
  • Patent number: 11753823
    Abstract: A concrete structure includes a continuous fiber-reinforced polymer material arranged as a main reinforcing material or a tendon. A short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more with respect to an entire volume. The continuous fiber-reinforced polymer material is shaped like a rod or a stranded wire. A ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 to 3.7, and an aspect ratio Lf/De, in which De is an equivalent diameter that is a cross-sectional area of the organic fiber converted into a circle diameter, is 30 to 69.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: September 12, 2023
    Assignees: TOKYO ROPE MFG. CO., LTD., ORIENTAL SHIRAISHI CORPORATION
    Inventors: Yoshihiro Tanaka, Eiji Koda, Toru Tanaka, Meguru Tsunomoto, Hiroshi Watase, Tomohiro Ishii
  • Publication number: 20220145626
    Abstract: PROBLEM TO BE SOLVED: To provide a concrete structure and a concrete slab, which, by using a continuous fiber-reinforced polymer material as a main reinforcing material or a tendon, and by mixing a short fiber reinforcing material in concrete, compensate for the mechanical shortcomings of the continuous fiber-reinforced polymer material, not rusting, and taking advantage of superior characteristics of the continuous fiber-reinforced polymer material, with low manufacturing cost and ultra-high durability. MEANS TO SOLVE THE PROBLEM: In a concrete structure, in which a continuous fiber-reinforced polymer material is arranged as a main reinforcing material or a tendon, a short fiber reinforcing material consisting of an organic fiber is mixed in 0.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 12, 2022
    Applicants: TOKYO ROPE MGF. CO., LTD., ORIENTAL SHIRAISHI CORPORATION
    Inventors: Yoshihiro TANAKA, Eiji KODA, Toru TANAKA, Meguru TSUNOMOTO, Hiroshi WATASE, Tomohiro ISHII
  • Patent number: 11268280
    Abstract: In an anchorage (1) of continuous fiber-reinforced polymer (CFRP) strands that anchors continuous fiber-reinforced polymer strands (2) to concrete structures, there is provided an untwisted diameter-expanded portion (3) expanded to a diameter D2 by being radially expanded with respect to a diameter D1 of a general portion (4) of the CFRP strands (2) by untwisting any section of the CFRP strands (2) formed by stranding a plurality of element wires (20, 21) that are bundles of multiple continuous fibers, and filling and curing a time curable material (5) in a clearance among the element wires the untwisted section that is untwisted.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: March 8, 2022
    Assignees: TOKYO ROPE MANUFACTURING CO., LTD., ORIENTAL SHIRAISHI CORPORATION
    Inventors: Hiroshi Masuya, Yoshihiro Tanaka, Toru Tanaka, Eiji Koda, Hiroshi Watase, Meguru Tsunomoto
  • Publication number: 20210087815
    Abstract: In an anchorage 1 of continuous fiber-reinforced polymer (CFRP) strands that anchors continuous fiber-reinforced polymer strands 2 to concrete structures, there is provided an untwisted diameter-expanded portion 3 expanded to a diameter D2 by being radially expanded with respect to a diameter D1 of a general portion 4 of the CFRP strands 2 by untwisting any section of the CFRP strands 2 formed by stranding a plurality of element wires (20, 21) that are bundles of multiple continuous fibers, and filling and curing a time curable material 5 in a clearance among the element wires the untwisted section that is untwisted.
    Type: Application
    Filed: July 11, 2018
    Publication date: March 25, 2021
    Applicants: TOKYO ROPE MANUFACTURING CO., LTD., ORIENTAL SHIRAISHI CORPORATION
    Inventors: Hiroshi MASUYA, Yoshihiro TANAKA, Toru TANAKA, Eiji KODA, Hiroshi WATASE, Meguru TSUNOMOTO
  • Patent number: 6801614
    Abstract: There is provided a remote digital terminal (RDT) which connects digital lines extended from integrated digital terminals(IDTs) with subscriber lines extended from subscribers accommodated in the integrated digital terminals comprising: first means for cross-connecting the digital lines and logic digital lines which are for identifying the digital lines on each of the integrated digital terminals; second means for cross-connecting the subscriber lines and logic subscriber lines which are for identifying the subscriber lines on each of the integrated digital terminals; and third means for cross-connecting the logic digital lines and the logic subscriber lines on each of the integrated digital terminals. Accordingly, the digital lines connected to each of the IDTs can be identified by the first means, and an arbitrary subscriber line can be allocated for an arbitrary logical subscriber by the second means.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: October 5, 2004
    Assignee: Fujitsu Limited
    Inventor: Eiji Koda
  • Patent number: 6041052
    Abstract: A call control system can cope with a plurality of exchanges that support call control messages issued in accordance with different protocols. The call control system for use in a subscriber transmission device is located along a transmission path between a plurality of subscribers and a plurality of exchanges. The call control system includes call control message terminal sections, each of which is provided for each of the protocols that are supported by the exchanges for terminating a data link for sending and receiving a call control message to and from a corresponding exchange. A call change data processor is provided in the system for detecting a call and a clearance by a subscriber, and for requesting the call control message terminal section, which supports a protocol that corresponds to a protocol of an exchange to which is connected to the subscriber, to transmit the detected contents to the exchange that supports the protocol.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: March 21, 2000
    Assignee: Fujitsu Limited
    Inventors: Shoji Miyake, Toru Inaba, Eiji Koda
  • Patent number: 5579386
    Abstract: An alerting cadence control system for a telephone network having a telephone exchange, subscriber transmission equipment connected to the telephone exchange, and a plurality of telephone sets each connected to the subscriber transmission equipment. The subscriber transmission equipment includes a plurality of subscriber interface cards and subscriber-shared alerting cadence control means, each of the cards incorporating a switch for performing alerting cadence switching of each telephone set. The subscriber-shared alerting cadence control means has a memory for control setting data in the format of a table in which is written a control program for controlling the switch connected to each telephone set. Where alerting cadence control is to cover a new subscriber service offered to a new telephone set, the applicable data in the table are modified from the telephone exchange under remote control without replacement of the subscriber interface card for that telephone set.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: November 26, 1996
    Assignee: Fujitsu Limited
    Inventor: Eiji Koda
  • Patent number: 5530949
    Abstract: A transmission equipment comprising a center management device collecting data from units connected to subscriber terminals. The center management device includes two processing units and a control unit for controlling operational states of the first and second processing unit in such a way that when one of the two processing units is working, the other of the two processing units is in a standby state. The two processing units process the same data by using a data backup unit whereby all of the units can be made by hardware which may be easily replaced or added. Alternatively, each unit may have a program downloading unit so that if a new function is added or new unit is added, the program in the unit may be down loaded to the center management device.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: June 25, 1996
    Assignee: Fujitsu Limited
    Inventors: Eiji Koda, Miwa Ogura