1
Minoru Kanoi, Yuzuru Imamura, Saburou Yasukawa, Kiyoji Iwashita, Toru Takei, Hiroyuki Kudo, Junzo Kawakami, Kazuo Nishijima, Hiroshi Inoue: Electrical power distribution monitoring system and method. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, October 5, 1999: US05963457 (134 worldwide citation)

An electrical power distribution monitoring system is provided for a power distribution line having a plurality of sections with a plurality of electrical loads connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor for at least o ...


2
Minoru Kanoi, Yuzuru Imamura, Saburou Yasukawa, Kiyoji Iwashita, Toru Takei, Hiroyuki Kudo, Junzo Kawakami, Kazuo Nishijima, Hiroshi Inoue: Electrical power distribution monitoring system and method. Hitachi, Beall Law Offices, May 9, 2000: US06061609 (61 worldwide citation)

An electrical power distribution monitoring system is provided for a power distribution line having a plurality of sections with a plurality of electrical loads connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor for at least o ...


3
Hiroyuki Kudo, Takashi Maeda, Nobuo Iwatani, Hiroshi Shibazaki: Preload measuring apparatus of rolling bearing. NSK, Sughrue Mion Zinn Macpeak & Seas PLLC, September 11, 2001: US06286374 (38 worldwide citation)

A preload measuring apparatus to measure the preload of a rolling bearing that includes a bearing support, a pressurization device, an excitation device, a vibration sensor, and a control section. The bearing support supports a rolling bearing by supporting both ends of a shaft inserted into an inne ...


4
Chihiro Fukui, Dai Watanabe, Hiroyuki Kudo, Masahiko Amano, Yasushi Harada: Expert system development support system and expert system environment utilizing a frame processing tecnique. Hitachi, Kenyon & Kenyon, October 25, 1994: US05359701 (32 worldwide citation)

An expert system in which a plurality of knowledge descriptive layers are provided in a flame system. Each descriptive layer is composed of several flames. The flames of the lower knowledge descriptive layer correspond to the elements of a knowledge processing object system. The content of frames of ...


5
Yasunori Katayama, Junzo Kawakami, Hiroyuki Kudo, Yoshiki Hirakouchi, Hiroaki Ishikawa: Power distribution control system. Hitachi, Kenyon & Kenyon, September 22, 1998: US05812389 (22 worldwide citation)

An information processing system comprises a plurality of systems (1, 3, 4, 6) communicating through a transmission path (2) and performing a processing base on their own function. One of the plurality of systems acts as as an supervising system having a supervising function. The supervising system ...


6
Mitsuyasu Kido, Tomio Chiba, Hiroyuki Kudo, Junzo Kawakami, Tadao Kawai: Digital signal processing method and system, electric power system signal processing system and electric power control system. Hitachi, Antonelli Terry Stout & Kraus, October 19, 1993: US05255202 (13 worldwide citation)

Analog signals are sampled and converted into digital data which is then filtered by a digital filter. The filtered digital data is then subjected to an arithmetic operation. The blocking band of the digital filter is set to a frequency band which is above the pass band of the analog signal componen ...


7
Yoshifumi Oura, Kunio Matsuzawa, Kazuyoshi Yoshida, Keizo Inagaki, Hiroyuki Kudo, Yoshihiro Sano: Transformer protection system. Hitachi, The Tokyo Electric Power Co, Antonelli Terry & Wands, September 20, 1988: US04772978 (10 worldwide citation)

In a transformer protection system, data of voltages and currents detected at individual terminals of a transformer connected to an electric power system are supplied to a computer. The computer computes driving point admittances or shunt admittances of the transformer on the basis of the voltage an ...


8
Hiroshi Adachi, Nobuhiko Eguchi, Hiroyuki Kudo: Centralized test apparatus for ATM exchange system. Fujitsu, Helfgott & Karas PC, March 23, 1999: US05887000 (9 worldwide citation)

A centralized test apparatus is provided for an ATM exchange system. The test apparatus monitors cells transmitted through a specified line connected to an office unit of the exchange system or through a specified path in the exchange system, and measures the traffic of the specified line or path. T ...


9
Yasunori Katayama, Junzo Kawakami, Hiroyuki Kudo, Yoshiki Hirakouchi, Hiroaki Ishikawa: Information processing system. Hitachi, Kenyon & Kenyon, June 6, 2000: US06073054 (5 worldwide citation)

An information processing system comprises a plurality of systems (1, 3, 4, 6) communicating through a transmission path (2) and performing a processing base on their own function. One of the plurality of systems acts as as an supervising system having a supervising function. The supervising system ...


10
Hiroyuki Kudo, Atsumi Watanabe, Hiroshi Sasaki: Protective relay. Hitachi, Antonelli Terry & Wands, December 31, 1985: US04562507 (3 worldwide citation)

A protective relay which hardly makes maloperation in itself regardless of mixing of low-order higher harmonics in its at least two sinusoidal input signals comprises a first and a second phase detection comparator generating two different-phase square signals indicative of the phase difference betw ...