CHARLES J. SCHAFER REVOCABLE TRUST

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E02B HYDRAULIC ENGINEERING 315
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8746746 Nestable connectorFeb 28, 13Jun 10, 14[F16L]
8403596 Groundwater control system and methodJun 30, 04Mar 26, 13[E02B]
8342775 Groundwater control system with purity sensor and methodMay 13, 05Jan 01, 13[E02B]
7942606 Groundwater control system with automatic water flow regulatorApr 29, 09May 17, 11[E02B]
6786234 Drainage tile flow regulatorJan 16, 04Sep 07, 04[F16K]
6715508 Drainage tile flow regulatorJun 06, 02Apr 06, 04[F16K]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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