MARK PRODUCTS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6324917 Combination air pipe connector and flow measurement deviceMar 11, 99Dec 04, 01[G01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4917632 Seismic takeout connectorExpiredMay 15, 89Apr 17, 90[H01R]
4787239 Sensor for hand held gas chromatographExpiredJan 11, 88Nov 29, 88[G01N]
4776208 Capillary flow controller for air pressurized telephone cable trace gasExpiredApr 23, 87Oct 11, 88[G01M]
4583406 Signal processorExpiredMay 30, 84Apr 22, 86[G01N]
4565097 Method and apparatus for transducer error cancellationExpiredMay 09, 84Jan 21, 86[G01L]
4527419 Sensor for underground duct probeExpiredMay 23, 83Jul 09, 85[G01M]
4490686 Differential amplifier with common mode rejection meansExpiredJul 02, 82Dec 25, 84[H03F]
4471651 Duct probe and dispensing apparatus thereforExpiredNov 12, 82Sep 18, 84[G01M]
4300402 Flow measuring needle and orifice for flow meterExpiredNov 16, 79Nov 17, 81[G01F]
4201079 Remote flow transducer for communication cableExpiredSep 29, 76May 06, 80[G01M, G01F]

Top Inventors for This Owner

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