Patents by Inventor Koichi Nagata
Koichi Nagata 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: 20010000854Abstract: A push-pull type control cable having a conduit tube and an inner cable comprised of a core wire and a plurality of strands wound around the core wire and inserted into the conduit tube, the control cable being filled with lubricant at a clearance between an inner periphery of the conduit tube and an outer periphery of the inner cable, wherein the plurality of strands each are comprised of three pieces of twisted element wires.Type: ApplicationFiled: December 4, 2000Publication date: May 10, 2001Applicant: Chuo Hatsujo Kabushiki KaishyaInventors: Masato Uneme, Seiji Yamada, Yasuhiro Yamada, Koichi Nagata
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Patent number: 6209415Abstract: A push-pull type control cable having a conduit tube and an inner cable comprised of a core wire and a plurality of strands wound around the core wire and inserted into the conduit tube, the control cable being filled with lubricant at a clearance between an inner periphery of the conduit tube and an outer periphery of the inner cable, wherein the plurality of strands each are comprised of three pieces of twisted element wires.Type: GrantFiled: January 25, 1999Date of Patent: April 3, 2001Assignees: Chuo Hatsujo Kabushiki Kaisha, Kabushiki Kaisha AporonInventors: Masato Uneme, Seiji Yamada, Yasuhiro Yamada, Koichi Nagata
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Patent number: 5945568Abstract: A method for producing a glycol ether, which can maintain a high catalyst-activity and high productivity, can control reaction-selectivity and which comprises reacting an alkylene oxide with an alcohol in the presence of a catalyst, wherein the catalyst is an anion exchange resin which comprises, as the substrate, a polymer of a vinyl aromatic compound and which has a structure such that a quaternary ammonium group is bonded to the aromatic group via a linking group having a chain length of at least 3.Type: GrantFiled: May 28, 1997Date of Patent: August 31, 1999Assignee: Mitsubishi Chemical CorporationInventors: Koichi Nagata, Toshiyuki Furuya
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Patent number: 5818096Abstract: A pin photodiode having a structure capable improving the frequency response and the saturation output while maintaining the effective internal quantum efficiency and CR time constant. A pin photodiode is formed by: a first semiconductor layer in a first conduction type; a second semiconductor layer in a second conduction type; a third semiconductor layer sandwiched between the first and second semiconductor layers, having a doping concentration lower than those of the first and second semiconductor layers; a fourth semiconductor layer in the first conduction type, provided at one side of the first semiconductor layer opposite to a side at which the third semiconductor layer is provided; and a cathode electrode and an anode electrode connected directly or indirectly to the second semiconductor layer and the fourth semiconductor layer, respectively.Type: GrantFiled: April 3, 1997Date of Patent: October 6, 1998Assignee: Nippon Telegraph and Telephone Corp.Inventors: Tadao Ishibashi, Tomofumi Furuta, Naofumi Shimizu, Koichi Nagata, Yutaka Matsuoka, Masaaki Tomizawa
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Patent number: 5202724Abstract: A microfilm camera comprises a camera head and a document support. The camera head includes a film transport mechanism for intermittently feeding a strip of microfilm past an exposure station at which an aperture plate is disposed. The aperture in the aperture plate is adjustable in one of at least two different sizes by means of a masking flap supported for movement between a first size position, in which a portion of the aperture is shielded, and a second size position in which the masking flap is clear from the aperture. When a document of a relatively small size is placed on the document support, the masking flap is in the first size position, but when a document of a relatively large size is placed on the document support, the masking flap is in the second size position.Type: GrantFiled: November 26, 1991Date of Patent: April 13, 1993Assignee: Minolta Camera Kabushiki KaishaInventors: Koichi Nagata, Keijiro Ishii, Fumio Fukumoto
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Patent number: 5190844Abstract: The present invention provides an improved process for producing organic particles (e.g. toner particles) having uniform charge controlling coating and excellent charge controlling effect. In the process, a dispersion comprising the organic particles (A), a specific compound (B) forming insoluble substances upon reacting with an insolubilizer (D) and a dispersing medium is prepared and then reacted with the insolubilizer (D).Type: GrantFiled: December 6, 1991Date of Patent: March 2, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Naoya Yabuuchi, Akihiro Kanakura, Takahito Kishida, Masayuki Maruta, Koichi Nagata, Makoto Shimizu
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Patent number: 4967228Abstract: A method and apparatus for additionally photographing information for retrieval during the photographing of an original image on a microfilm is disclosed. A slit light from a light source is projected on the microfilm while the microfilm is being transported. The length of the information for retrieval to be additionally photographed on the microfilm can be freely set by controlling the period of the projection of the light on the microfilm. One displaying device is adapted to project light in the pattern of one numeral on the microfilm while the microfilm is at rest.Type: GrantFiled: April 6, 1989Date of Patent: October 30, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Kenjiro Ishii, Fumio Fukumoto, Koichi Nagata, Akira Shibata
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Patent number: 4918485Abstract: A roll film camera is disclosed which comprises a supply reel for winding the part of a roll of recording medium yet to be used and a takeup reel for winding the part of the recording medium already used for photographing original images. This camera is constructed so as to be loaded with a plurality of types of recording medium which differs in thickness. The length of the part of the recording medium yet to be used is shown in a displaying part, according to the type of recording medium. When the residual amount of the recording medium of a given type decreases below a prescribed length, an alarm is issued which prompts the operator to make preparation for the loading of a new recording medium.Type: GrantFiled: April 6, 1989Date of Patent: April 17, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Kenjiro Ishii, Fumio Fukumoto, Koichi Nagata, Akira Shibata
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Patent number: 4910511Abstract: In a radio paging system, radio paging signals contain a BCH (31, 16) format address and a BCH (31, 21) format address which are sent from a central station. The paper is assigned first and second BCH format user identification codes corresponding respectively to the BCH (31, 16) and BCH (31, 21) addresses. The pager has mode select switches for selecting the BCH (31, 16) address for local area reception or BCH (31, 21) address for wide area reception. When a paging signal is received, a coincidence is detected between the selected address and the corresponding BCH user identification code. When the coincidence is detected, the user is alerted to the reception by a paging signal. An appropriate channel is established in the local or wide service area.Type: GrantFiled: April 4, 1986Date of Patent: March 20, 1990Assignee: NEC CorporationInventors: Koichi Nagata, Yohichiro Minami
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Patent number: 4745408Abstract: A radio paging system, comprising a transmitting base station and a paging receiver with a battery-saving function. The paging receiver operates intermittently at different repetition periods, depending on the call traffic density. When there are fewer calls, the receiver operates less frequently, in order to avoid unnecessary operation and consequent battery drain. When there is a call to be sent, the period between attempted detections of a preamble code word is shortened. The receivers then lengthen the period for detecting a message, and receive a sync code word, followed by an address code word, which alerts the particular receiver being paged, an alert tone being generated. The message ends with a battery saving code word and ending code word. The battery saving code word alerts the receivers to lengthen the period between attempted detections of the preamble code word. The variation in length of periods between attempted detection is a battery-saving feature.Type: GrantFiled: April 6, 1984Date of Patent: May 17, 1988Assignee: NEC CorporationInventors: Koichi Nagata, Takashi Oyagi, Toshihiro Mori
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Patent number: 4734694Abstract: A pager which is usable in a plurality of service areas is disclosed. The pager includes a radio section for selectively receiving and modulating two or more radio frequencies, and frequency switching means for switching the receive frequency of the radio section when a signal on a predetermined receive frequency fails to be received. Power source control means is provided for cutting down power consumption. The own call signal is switched at the same time as the receive frequency to offer an effect as would be provided by a plurality of pagers. The receive frequency is displayed so that the user may see a particular service area to which his or her own pager belongs.Type: GrantFiled: August 12, 1985Date of Patent: March 29, 1988Assignee: NEC CorporationInventors: Shinjiro Umetsu, Yutaka Ichikawa, Koichi Nagata
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Patent number: 4706272Abstract: A paging communication system is configured so that a plurality of receivers are called by group in response to a paging signal transmitted from a base station. The base station is provided with first circuitry comprising a plurality of timers for counting the number of transmissions to each receiver, and second circuitry operative to transmit a first kind of data indicating that the information code assigned to each of the particular receivers is masked and a second kind of data for restarting the ordinary receiving process with respect to the masked information code. Each receiver is provided with a decoder circuit operative in response to the first kind of data to inhibit the ordinary receiving process with respect to the masked code and operative in response to the second kind of data to restart the ordinary receiving process.Type: GrantFiled: February 1, 1985Date of Patent: November 10, 1987Assignee: NEC CorporationInventors: Izumi Nishimura, Koichi Nagata
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Patent number: 4653028Abstract: A calling signal memory device for a radio paging receiver includes n.multidot.x memory cells which are arranged in n lines and x columns to constitute shift registers in the line direction and flipflops in the column direction. Each flipflop allows only one information to be stored in the memory cells in its associated column. Information stored in the respective columns is transferred from the associated input terminals to the associated output terminals to be thereby delivered sequentially in the first-in-first-out order.Type: GrantFiled: April 26, 1983Date of Patent: March 24, 1987Assignee: NEC CorporationInventors: Koichi Nagata, Takeshi Nakajima
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Patent number: 4639726Abstract: In a radio communication apparatus comprising a P-ROM (32), a loudspeaker (34), and/or a display unit (36) and carrying out a receiving operation of selectively receiving a call signal specific to the apparatus by the use of an identification number read out of the P-ROM, a predetermined signal to be produced after the call signal is defined to inhibit or disable the receiving operation carried out after reception of the predetermined signal. The loudspeaker may be driven under control of a reception controller (31) to continuously produce an audible signal when the predetermined signal is received. The display unit may also be driven to provide visual displays representative of particular messages conveyed by the predetermined signal. The particular messages may be "lost" and "theft" codes and a telephone number.Type: GrantFiled: August 20, 1984Date of Patent: January 27, 1987Assignee: NEC CorporationInventors: Yoshio Ichikawa, Masaaki Akahori, Daisuke Ishii, Kazuyuki Tsunoda, Yohichiro Minami, Koichi Nagata
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Patent number: 4554540Abstract: A signal detection circuit for a digital radio paging receiver is provided for successfully detecting a desired signal. A demodulated carrier wave, modulated with a code having n bits, is written into an n-stage shift register in response to a clock pulse of frequency f.sub.s. The output stages of the shift register are scanned in response to a scan signal of frequency nf.sub.s in order to provide an output. The output is dependent on the coincidence of the shift register outputs with a predetermined code and is used to enable an address detector circuit which compares a received signal to the desired signal stored in a PROM.Type: GrantFiled: November 19, 1982Date of Patent: November 19, 1985Assignee: Nippon Electric Co., Ltd.Inventors: Toshihiro Mori, Koichi Nagata
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Patent number: 4508624Abstract: Disclosed is a ceramic body for chromatography, which consists of a calcined molded body of alumina particles composed mainly of .alpha.-alumina, preferably containing a minor amount of .gamma.-alumina, and which has a narrow pore size distribution range.This ceramic body has no substantial adsorbing property and therefore, when it is used for use like to thin layer chromatography or gas chromatography, the tailing phenomenon is not caused to occur at all and a high separating capacity can be obtained stably.Type: GrantFiled: November 26, 1982Date of Patent: April 2, 1985Assignee: Kyoto Ceramic Co., Ltd.Inventor: Koichi Nagata
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Patent number: 4495429Abstract: A limiter amplifier with a power supply has a plurality of cascade-connected differential amplifiers for limiting the amplitude of an input signal. Each of the amplifiers has a first constant current circuit. A biassing circuit, having a second constant current circuit, is connected to the input of the differential amplifier for supplying its biassing needs. A third constant current circuit activates the first and second constant current circuits. A voltage regulator is connected to the power supply for providing a constant voltage to each of the three constant current circuits. The voltage regulator and the first to third constant current circuits have the same temperature characteristics.Type: GrantFiled: June 9, 1982Date of Patent: January 22, 1985Assignee: Nippon Electric Co., Ltd.Inventors: Takashi Oda, Koichi Nagata
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Patent number: 4491978Abstract: In a portable radio receiver of the type wherein a metal member forming a loop antenna surrounds the circuit components making up the receiver circuitry, the receiver is provided with high impedance elements in series with at least the power supply and grounding lines at some point between the power supply and the RF-IF converter. The antenna circuitry may also include a high impedance element in series with the signal path at some point downstream of the RF-IF converter.Type: GrantFiled: May 10, 1982Date of Patent: January 1, 1985Assignee: Nippon Electric Co., Ltd.Inventors: Koichi Nagata, Daisuke Ishii
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Patent number: 4382256Abstract: A paging receiver demodulates a carrier wave modulated with a paging signal code and a plurality of information key codes, respectively. The demodulated information key codes are decoded by a receiver when its own paging signal code is detected. The receiver contains a plurality of words corresponding to said information key codes, respectively. These stored words are read out when they correspond to the decoded information. The read-out codes are then displayed.Type: GrantFiled: October 29, 1980Date of Patent: May 3, 1983Assignee: Nippon Electric Co., Ltd.Inventor: Koichi Nagata
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Patent number: 4288517Abstract: A toner composition for electrostatic photography which comprises (A) toner powder comprising a base resin and a coloring agent and having an average particle size of not more than 30 microns and (B) silica powder coated on its surface with the base resin of the toner powder.Type: GrantFiled: May 14, 1980Date of Patent: September 8, 1981Assignee: Nippon Paint Co., Ltd.Inventors: Seiji Arimatsu, Katsukiyo Ishikawa, Yasusi Umeda, Koichi Nagata