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).
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Publication number: 20250023329Abstract: 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: ApplicationFiled: October 27, 2022Publication date: January 16, 2025Inventors: KENTARO HAYASHI, TATSUSHI HAMAGUCHI, EIJI NAKAYAMA, TATSUROU SATOU, HIDEKAZU KAWANISHI, RINTARO KODA
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Patent number: 11753823Abstract: 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: GrantFiled: January 31, 2020Date of Patent: September 12, 2023Assignees: TOKYO ROPE MFG. CO., LTD., ORIENTAL SHIRAISHI CORPORATIONInventors: Yoshihiro Tanaka, Eiji Koda, Toru Tanaka, Meguru Tsunomoto, Hiroshi Watase, Tomohiro Ishii
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Publication number: 20220145626Abstract: 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: ApplicationFiled: January 31, 2020Publication date: May 12, 2022Applicants: TOKYO ROPE MGF. CO., LTD., ORIENTAL SHIRAISHI CORPORATIONInventors: Yoshihiro TANAKA, Eiji KODA, Toru TANAKA, Meguru TSUNOMOTO, Hiroshi WATASE, Tomohiro ISHII
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Patent number: 11268280Abstract: 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: GrantFiled: July 11, 2018Date of Patent: March 8, 2022Assignees: TOKYO ROPE MANUFACTURING CO., LTD., ORIENTAL SHIRAISHI CORPORATIONInventors: Hiroshi Masuya, Yoshihiro Tanaka, Toru Tanaka, Eiji Koda, Hiroshi Watase, Meguru Tsunomoto
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Publication number: 20210087815Abstract: 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: ApplicationFiled: July 11, 2018Publication date: March 25, 2021Applicants: TOKYO ROPE MANUFACTURING CO., LTD., ORIENTAL SHIRAISHI CORPORATIONInventors: Hiroshi MASUYA, Yoshihiro TANAKA, Toru TANAKA, Eiji KODA, Hiroshi WATASE, Meguru TSUNOMOTO
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Patent number: 6801614Abstract: 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: GrantFiled: November 17, 1998Date of Patent: October 5, 2004Assignee: Fujitsu LimitedInventor: Eiji Koda
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Patent number: 6041052Abstract: 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: GrantFiled: February 3, 1997Date of Patent: March 21, 2000Assignee: Fujitsu LimitedInventors: Shoji Miyake, Toru Inaba, Eiji Koda
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Patent number: 5579386Abstract: 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: GrantFiled: April 26, 1995Date of Patent: November 26, 1996Assignee: Fujitsu LimitedInventor: Eiji Koda
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Patent number: 5530949Abstract: 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: GrantFiled: October 6, 1994Date of Patent: June 25, 1996Assignee: Fujitsu LimitedInventors: Eiji Koda, Miwa Ogura