Liquid Air Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 256
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 148
 
  
 
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
5749389 Purgeable connection for gas supply cabinetDec 22, 93May 12, 98[B08B]
5467798 Refill-preventing valve for non-refillable containersDec 02, 93Nov 21, 95[F16K]
5404929 Casting of high oxygen-affinity metals and their alloysMay 18, 93Apr 11, 95[B22D]
5395454 Method of cleaning elongated objectsDec 09, 93Mar 07, 95[B08B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5230221 Chilling door for vacuum tumblers and massagersExpiredJun 04, 90Jul 27, 93[F25B]
5196072 Method and apparatus for controlling metal oxide fume generation during subdivision of a body containing metal valuesExpiredDec 12, 90Mar 23, 93[B23K]
5190577 Replacement of argon with carbon dioxide in a reactor containing molten metal for the purpose of refining molten metalExpiredDec 11, 90Mar 02, 93[C21C]
5120329 Integrated system and method for providing a controlled atmosphere in a food storage facilityExpiredApr 12, 91Jun 09, 92[B01D]
5108656 Method for preservation of fresh fish or sea-foodExpiredJun 01, 90Apr 28, 92[A23B, B65B]
5091034 Multi-step combined mechanical/thermal process for removing coatings from steel substrates with reduced operating and capital costs and with increased refrigeration speed and efficiencyExpiredOct 09, 90Feb 25, 92[B32B]
5080867 Portable carbonyl sulfide analyzerExpiredSep 07, 90Jan 14, 92[G01N]
4990183 Process for producing steel having a low content of nitrogen in a ladle furnaceExpiredAug 24, 89Feb 05, 91[G21C]
4977093 Process for analyzing carbonyl sulfide in a gasExpiredApr 07, 88Dec 11, 90[G01N]
4963205 Efficiency process and apparatus for embrittling an outer protective coating of a pipe or pipelineExpiredNov 13, 89Oct 16, 90[B32B]
4956042 Process and apparatus for embrittling and subsequently removing an outer protective coating of a pipe or pipelineExpiredNov 01, 88Sep 11, 90[B32B]
4946326 Method for preservation of fresh fish or sea-foodExpiredJun 07, 88Aug 07, 90[A23B, B65B]
4925095 Multi-orifice manifold for balancing discharge of liquified gasesExpiredApr 07, 88May 15, 90[B05B]
4912943 Method and apparatus for enhancing production capacity and flexibility of a multi-tier refrigeration tunnelExpiredDec 14, 88Apr 03, 90[F25D]
4911362 Method and apparatus for making carbon dioxide snowExpiredFeb 28, 89Mar 27, 90[A62C, A01G]
4848751 Lance for discharging liquid nitrogen or liquid argon into a furnace throughout the production of molten metalExpiredSep 30, 87Jul 18, 89[C21C]
4847057 Process and installation for ammonia treatment of a gasExpiredJun 02, 87Jul 11, 89[B01D]
4834779 Process for membrane seperation of gas mixturesExpiredApr 07, 88May 30, 89[B01D]
4828609 Method to protect the surface of metal in vertical melting furnacesExpiredMar 01, 88May 09, 89[C22B]
4813245 High efficiency linear freezerExpiredJan 13, 88Mar 21, 89[F25D]

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