OYO CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7164476 Apparatus and method for detecting pipeline defectsMay 30, 01Jan 16, 07[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0369,948 DISTRIBUTED SURVEY SYSTEM FOR OBTAINING UNDERGROUND ELECTRICAL CHARACTERISTICS AND DISTRIBUTED SURVEY METHOD USING SAMEAbandonedFeb 04, 14Dec 24, 15[E21B, G01V]
5859533 Process for the production of a supply current of a solenoid for a measuring probe for electromagnetic tomographyExpiredMay 14, 97Jan 12, 99[H03K, G01V]
5650726 Emitter for an electromagnetic tomography measurement system which connects a greater number of windings to a magnetic core at low frequencies than at high frequenciesExpiredSep 22, 95Jul 22, 97[H01F, G01V]
5534668 Deadweight dropping type wave sourceExpiredJan 27, 95Jul 09, 96[G01V]
5416281 Deadweight dropping type wave sourceExpiredJul 08, 93May 16, 95[G01V]
4383591 Apparatus for generating P waves and S wavesExpiredDec 12, 80May 17, 83[G01V]
4207961 Exciting method for logging by S waveExpiredSep 28, 78Jun 17, 80[G01V]

Top Inventors for This Owner

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