LONG MANUFACTURING LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 1438
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 738
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7051799 Self-enclosing heat exchanger with crimped turbulizerOct 23, 01May 30, 06[F28F]
6446712 Radial flow annular heat exchangersFeb 23, 99Sep 10, 02[F28F]
6340053 Self-enclosing heat exchanger with crimped turbulizerFeb 04, 00Jan 22, 02[F28D, F28F]
6273183 Heat exchanger turbulizers with interrupted convolutionsJun 09, 00Aug 14, 01[F28F]
6253837 By-pass values for heat exchangerJun 09, 00Jul 03, 01[F28F]
6244334 Self-enclosing heat exchange with shim plateFeb 04, 00Jun 12, 01[F28D]
6220340 Heat exchanger with dimpled bypass channelFeb 29, 00Apr 24, 01[F28F]
6199626 Self-enclosing heat exchangersFeb 04, 00Mar 13, 01[F28F]
5964282 Stepped dimpled mounting brackets for heat exchangersJun 26, 98Oct 12, 99[F28D]
5875834 Baffle insert for heat exchangersApr 22, 98Mar 02, 99[F28D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6497274 Heat exchanger with parallel flowing fluidsExpiredDec 28, 00Dec 24, 02[F28F]
5203832 Circumferential flow heat exchangerExpiredNov 17, 89Apr 20, 93[F28F]
5127433 Coolant corrosiveness indicatorExpiredNov 08, 90Jul 07, 92[F16K, F28F, G01D]
5036911 Embossed plate oil coolerExpiredJun 19, 89Aug 06, 91[F28D, F28F]
5024268 Corrosion inhibiting coolant inhibitor containerExpiredNov 14, 89Jun 18, 91[F28F]
4782891 Corrosion inhibiting coolant filterExpiredMay 18, 87Nov 08, 88[F28F]
4730669 Heat exchanger core construction utilizing a diamond-shaped tube-to-header joint configurationExpiredFeb 03, 86Mar 15, 88[F28D]
4701127 Controlled atmosphere capsule for fluxless brazingExpiredDec 10, 82Oct 20, 87[F27D, C21D]
4497364 Layered solid corrosion inhibitors for use in corrodible devices for automatic addition to coolant systemsExpiredJan 03, 83Feb 05, 85[F28F]
4441547 Radiator mounting fittingsExpiredJan 05, 81Apr 10, 84[F28F]
4402912 Device to automatically add a controlled amount of corrosion inhibitor with a change in spring loadingExpiredDec 23, 81Sep 06, 83[G05D, B01J, C23F]
4388159 Surface preparation of aluminum articlesExpiredMay 18, 81Jun 14, 83[C25D, B05D]
4370868 Distributor for plate fin evaporatorExpiredJan 05, 81Feb 01, 83[F25B]
4357236 Automatic addition of a corrosion inhibitor to a coolant system by osmotic pressureExpiredMay 17, 79Nov 02, 82[B01D]
4351390 Retaining clips for gasketed tanks on heat exchangersExpiredFeb 11, 80Sep 28, 82[F28D]
4347895 Heat exchanger with bilayered metal end container for anticorrosive additionExpiredJan 05, 81Sep 07, 82[F28F]
4346757 Automotive cooling system using a non-pressurized reservoir bottleExpiredSep 10, 80Aug 31, 82[F01P]
4338959 Device to automatically add a controlled amount of corrosion inhibitor in an engine cooling systemExpiredOct 29, 80Jul 13, 82[F28F]
4338997 Heat exchanger with bilayered metal end container for anticorrosive additionExpiredJan 05, 81Jul 13, 82[F28F]
4333516 Corrodible container for automatic addition of corrosion inhibitor to a coolant systemExpiredDec 10, 80Jun 08, 82[F28F]

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