1
Shunsuke Uchida, Haruo Fujimori, Fuminobu Takahashi, Takaharu Fukuzaki, Izumi Yamada: Plant monitoring and diagnosing method and system, as well as plant equipped with the system. Hitachi, Bardehle Pagenberg Dost Altenburg Frohwitter Geissler, October 6, 1998: US05817958 (47 worldwide citation)

Plant operating conditions 1, apparatus operating conditions 2 and environment conditions 3 are accumulated, combined and put together as a set of plant status variables 8 through a monitor 6, while water chemistry information 4 is accumulated as another set of plant status variables 9. The set of s ...


2
Yoshihiro Michiguchi, Fuminobu Takahashi, Kazuo Hiramoto, Masatsugu Nishi, Shinji Sonoda: Method and system for detecting an object with a radio wave. Hitachi, Antonelli Terry & Wands, November 10, 1987: US04706031 (37 worldwide citation)

Method and apparatus for detecting an object by using a radio wave which is radiated by an antenna toward the object to be detected. An echo wave of the radio wave reflected from the object is received by the antenna. On the basis of phase difference between the transmitted waveform and the received ...


3
Atsushi Takagi, Shigeru Izumi, Fuminobu Takahashi, Chikara Sato, Shinji Naitoh, Shinji Sonoda: Chain-like self-moving robot and control system therefor. Hitachi, Tokyo Gas, Beall Law Offices, November 11, 1986: US04621532 (37 worldwide citation)

A chain-like self-moving robot includes three or more capsule units connected to one another in a string by means of couplers. By expanding and contracting intercapsule spaces in a predetermined sequence so that a smaller number of the capsules are moved while a larger number of capsules remain stat ...


4
Fuminobu Takahashi: Noncontact ultrasonic flaw detecting method and apparatus therefor. Hitachi, Antonelli Terry & Wands, April 15, 1986: US04581939 (31 worldwide citation)

The surface of a specimen to be inspected is irradiated with a light having an intensity which varies from a position distant from the material, so that ultrasonic beams are generated in the material to be inspected. A coherent light is also projected onto a fixed surface provided at a given positio ...


5
Yoshihiro Michiguchi, Kazuo Hiramoto, Masatsugu Nishi, Fuminobu Takahashi: Method and apparatus for detecting an object or a condition indicating a defect in a medium. Hitachi, Antonelli Terry & Wands, June 30, 1987: US04677438 (31 worldwide citation)

An object detecting method and apparatus is disclosed and which operates by transmitting a wave toward an object embedded in a medium having a reflective coefficient at its surface, receiving the resultant reflected wave from the object, applying the received signal to a signal processing unit, and ...


6
Shunsuke Uchida, Haruo Fujimori, Fuminobu Takahashi, Takaharu Fukuzaki, Izumi Yamada: Plant monitoring and diagnosing method and system, as well as plant equipped with the system. Hitachi, Bardehle Pagenberg Dost Altenburg Frohwitter Geissler & Partners, April 22, 1997: US05623109 (30 worldwide citation)

Plant operating conditions 1, apparatus operating conditions 2 and environment conditions 3 are accumulated, combined and put together as a set of plant status variables 8 -through a monitor 6, while water chemistry information 4 is accumulated as another set of plant status variables 9. The set of ...


7
Yuuji Ichinose, Fuminobu Takahashi: Method of detecting an object by use of laser light and laser radar. Hitachi, Antonelli Terry Stout & Kraus, August 21, 1990: US04950075 (20 worldwide citation)

A method and an apparatus are disclosed in which paying attention to the fact that the rate of attenuation of laser lilght propagating in the atmosphere changes depending on meteorological conditions, the rate of attenuation is detected and the optimum laser beam emission or divergence angle is cont ...


8
Yuuji Ichinose, Fuminobu Takahashi, Yoshiaki Ichikawa: Scanning method used by laser radar and laser radar for carrying out the method. Hitachi, Antonelli Terry Stout & Kraus, February 19, 1991: US04995102 (18 worldwide citation)

A scanning method used by a laser radar for scanning a predetermined scanning region with a laser beam so that the whole of the scanning region is illuminated with the laser beam, is disclosed in which a laser beam makes a first spiral scanning outwardly or inwardly and then makes a second spiral sc ...


9
Fuminobu Takahashi, Masahiro Koike, Shunsuke Uchida, Haruo Fujimori, Izumi Yamada, Takaharu Fukuzaki, Makoto Nagase: Diagnosis system. Hitachi, Antonelli Terry Stout & Kraus, May 5, 1998: US05748496 (16 worldwide citation)

A diagnosis system having sensors for supervising a plant, signal processors for processing signals of the sensors, and a state quantity arithmetic operation unit. The state quantity arithmetic operation unit calculates a quantity of state expressing the environment of the plant on the basis of supe ...


10
Yuji Hori, Yoshichika Nishimura, Fuminobu Takahashi: Fluid composition for drilling. Dai Ichi Kogyo Seiyaku, Armstrong Nikaido Marmelstein & Kubovcik, May 28, 1985: US04519923 (13 worldwide citation)

A fluid composition suitable for use in drilling containing a sulfoethylcellulose alkali metal salt of which a degree of substitution is from 0.5 to 2.5 and the viscosity of a 1% by weight aqueous solution is 5 to 5,000 cP. The sulfoethylcellulose alkali metal salt has excellent water loss reducing ...