TIF Instruments, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5400015 Filter circuit for a gaseous leak detectorFeb 02, 94Mar 21, 95[G08B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5498873 Refrigerant impurity analyzerExpiredNov 15, 94Mar 12, 96[G01J, G01N]
5321209 Electronic weighing deviceExpiredDec 17, 92Jun 14, 94[G01L, G01G]
5293902 Quick-disconnect fluid couplingExpiredJun 07, 93Mar 15, 94[F16L]
5136885 Quartz crystal pressure sensorExpiredApr 05, 91Aug 11, 92[G01L]
4788858 Fuel injector testing device and methodExpiredAug 04, 87Dec 06, 88[G01M]
4719428 Storage battery condition tester utilizing low load currentExpiredJun 04, 85Jan 12, 88[G01N]
4392374 Transducer coupling apparatus for inhomogeneity detectorExpiredJun 08, 81Jul 12, 83[G01N]
4282521 Regulating circuit for gaseous impurity detectorExpiredNov 13, 79Aug 04, 81[G08B, G01M]
4235095 Device for detecting inhomogeneities such as gas bubblesExpiredSep 01, 78Nov 25, 80[G01N]
4213089 Variable scale readout for multi-meter useExpiredOct 02, 78Jul 15, 80[G01R]

Top Inventors for This Owner

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