WATTS INVESTMENT COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5478047 Flexible seating structure for valvesMay 15, 95Dec 26, 95[F16K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6303905 Heating element construction for floor warming systemsExpiredAug 25, 00Oct 16, 01[H05B]
6300598 Electrical monitor for floor heating systemsExpiredAug 25, 00Oct 09, 01[H05B]
6220519 Sanitary steam trapExpiredNov 01, 99Apr 24, 01[F16T]
5908573 Electric floor heating systemExpiredDec 30, 97Jun 01, 99[H05B]
5488975 Multiple layer flexible hose construction incorporating gas barrierExpiredJun 28, 94Feb 06, 96[F16L]
5022459 Flexible hose heat exchanger construction with combination locating and thawing wireExpiredDec 06, 88Jun 11, 91[F16L, F24D]
4779673 Flexible hose heat exchanger constructionExpiredSep 16, 86Oct 25, 88[F24D]
4561458 Steam-metering method and apparatusExpiredNov 19, 84Dec 31, 85[G05D]
4553587 Backflush coupling and method for internal combustion engine cooling systemExpiredAug 15, 83Nov 19, 85[F28G]
4475570 Anti-syphon freezeless water hydrantExpiredOct 16, 81Oct 09, 84[F16K]
4250913 Pilot mechanism for pressure regulating valveExpiredMay 07, 79Feb 17, 81[F16K]
4250920 Valve for water treatment equipmentExpiredNov 06, 78Feb 17, 81[F16K]
4248403 Plug assembly for movable plug valvesExpiredJan 08, 79Feb 03, 81[F16K]
4241752 Backflow preventerExpiredMay 30, 78Dec 30, 80[F16K]
4221406 Adapter for coupling passageway and conduitExpiredDec 18, 78Sep 09, 80[F16L]

Top Inventors for This Owner

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