Dunham-Bush, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 144

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5423378 Heat exchanger element and heat exchanger using sameMar 07, 94Jun 13, 95[F28D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4781325 Thermostatic valve with trap repair cartridgeExpiredJan 11, 88Nov 01, 88[F16K, F16T]
4727907 Turbulator with integral flow deflector tabsExpiredMar 30, 87Mar 01, 88[F15D, F28F]
4222716 Combined pressure matching and capacity control slide valve assembly for helical screw rotary machineExpiredJun 01, 79Sep 16, 80[F04B]
4181474 Vertical axis hermetic rotary helical screw compressor with improved rotary bearings and oil managementExpiredMar 02, 78Jan 01, 80[F01C]

Top Inventors for This Owner

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