NASH INDUSTRIES, L.L.C.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 443
 
  
 
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON128
 
  
 
F28B STEAM OR VAPOUR CONDENSERS 17

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6354808 Modular liquid ring vacuum pumps and compressorsApr 10, 00Mar 12, 02[F04C]
5961295 Mixed flow liquid ring pumpsJul 03, 97Oct 05, 99[F04C]
5899668 Two-stage liquid ring pumps having separate gas and liquid inlets to the second stageJan 30, 97May 04, 99[F04C]
D405096 PumpJan 05, 98Feb 02, 99[1502]
5469705 Heat recovery in a liquid ring pump seal liquid chiller systemAug 22, 94Nov 28, 95[F28B]
5356268 Check valve structures for liquid ring pumpsSep 29, 93Oct 18, 94[F04C]
5147508 Suction box covers for cleaning papermaking machine feltsOct 11, 91Sep 15, 92[D21F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6394777 Cooling gas in a rotary screw type pumpExpiredDec 29, 00May 28, 02[F03C]
5427685 Separator for separating gas from a liquidExpiredJun 14, 93Jun 27, 95[B01D]
5395215 Supports for rotatable housing of liquid ring pumpsExpiredJul 26, 94Mar 07, 95[F04C]
5370502 Liquid ring pumps with pressurized gas supported rotating linersExpiredDec 17, 93Dec 06, 94[F04C]
5213479 Liquid ring pumps with improved housing shapesExpiredApr 09, 92May 25, 93[F04C]
5131817 Two-stage pumping systemExpiredMar 22, 90Jul 21, 92[F04C]
D327271 Liquid ring pumpExpiredMar 12, 90Jun 23, 92[]
D327272 Liquid ring pumpExpiredMar 12, 90Jun 23, 92[]
D327273 Liquid ring pumpExpiredMar 12, 90Jun 23, 92[]
4850808 Liquid ring pump having port member with internal passageways for handling carry-over gasExpiredMar 19, 85Jul 25, 89[F04C]
D294266 Liquid ring pumpExpiredMay 08, 86Feb 16, 88[]
4679987 Self-priming liquid ring pump methods and apparatusExpiredMay 19, 86Jul 14, 87[F04C]
4613283 Liquid ring compressorsExpiredJun 26, 85Sep 23, 86[F04C]
4551070 Noise control for conically ported liquid ring pumpsExpiredDec 21, 84Nov 05, 85[F04C]
4521161 Noise control for conically ported liquid ring pumpsExpiredDec 23, 83Jun 04, 85[F04C]
4498844 Liquid ring pump with conical or cylindrical port memberExpiredAug 08, 83Feb 12, 85[F04C]

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