US Patent No: 4,799,166

Number of patents in Portfolio can not be more than 2000

Apparatus for automatically analyzing gases in oil

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Abstract

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An apparatus for automatically analyzing gases in oil, wherein a gas analyzer analyzes the total quantity of combustible gases extracted from the oil or the quantities of several specified ones of the combustible gases, comprising a data processor determining the presence or absence of the abnormality of an oil-immersed equipment on the basis of the increasing or decreasing trend of the analyzed results obtained in several analyzing operations, or calculating the sampling period of oil sampling and analytical processing routines, on the basis of the increasing or decreasing trend of the analyzed results, whereby the abnormality can be automatically determined with a high reliability.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MITSUBISHI DENKI KABUSHIKI KAISHATOKYO19957

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ikeda, Goroo Ako, JP 1 3
Naito, Sadao Ako, JP 2 23
Shinohara, Hideo Yokohama, JP 10 45
Shiono, Katsumi - 11 53

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ABB POWER T&D COMPANY, INC., A DE CORP. (1)
4,654,806 Method and apparatus for monitoring transformers 62 1984
 
Compur-Electronic GmbH (1)
4,357,300 Apparatus for process analysis 3 1980
 
INSTROMET TECHNOLOGY CORPORATION (1)
4,229,968 Gas measurement and analysis system 11 1978
 
Texaco Inc. (1)
4,354,242 Feedstock temperature control system 2 1980
 
The Boeing Company (1)
4,471,348 Method and apparatus for simultaneously displaying data indicative of activity levels at multiple digital test points in pseudo real time and historical digital format, and display produced thereby 71 1982
 
WESTERN ATLAS INTERNATIONAL, INC. (1)
4,524,420 Signal processing apparatus 8 1982

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ARIZONA PUBLIC SERVICE COMPANY (2)
7,747,417 Method and system for transformer dissolved gas harmonic regression analysis 7 2007
8,781,756 Method and system for estimating transformer remaining life 0 2011
 
The Electron Machine Corporation (1)
5,029,103 Carbon dioxide monitor 2 1989