Intermountain Research & Development Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22B PRODUCTION OR REFINING OF METALS 226
 
  
 
C01C AMMONIA; CYANOGEN; COMPOUNDS THEREOF 113
 
  
 
C01D COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM 114

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5364605 Recovery of cyanide from precious metal tailingsJun 05, 91Nov 15, 94[C01C]
5283054 Process for producing sodium salts from brines of sodium oresMar 30, 93Feb 01, 94[C22B]
5262134 Process for producing sodium salts from brines of sodium oresFeb 21, 92Nov 16, 93[C01D]
5238664 Soda ash productionJun 27, 91Aug 24, 93[C22B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5198145 Dry detergent compositionsExpiredDec 06, 91Mar 30, 93[C11D]
5192164 Soda ash productionExpiredJul 25, 91Mar 09, 93[B09B, E02D]
5043149 Soda ash productionExpiredAug 29, 90Aug 27, 91[C22B]
4992079 Process for preparing a nonphosphate laundry detergentExpiredDec 27, 88Feb 12, 91[C11D]
4781899 Purification of crystallized solids made via continuous crystallizationExpiredJul 27, 84Nov 01, 88[C22B, C01D]
4654204 Production of sodium bicarbonate by reversion of soda-type feed saltExpiredJul 16, 85Mar 31, 87[C01D]
4652054 Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxideExpiredApr 16, 85Mar 24, 87[E21B, E21C]
4588569 Dry injection flue gas desulfurization process using absorptive soda ash sorbentExpiredFeb 21, 85May 13, 86[C01B, B01J]
4557910 Production of soda ash from nahcoliteExpiredMar 29, 82Dec 10, 85[C22B, C01D]
4555391 Dry injection flue gas desulfurization processExpiredJul 24, 84Nov 26, 85[C01B, B01J]
4519806 Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na.sub.2 SO.sub.4 - and NaClExpiredNov 26, 82May 28, 85[C01B, C01D]
4498706 Solution mining of trona or nahcolite ore with aqueous NaOH and HCl solventsExpiredAug 15, 83Feb 12, 85[E21B, E21C]
4462794 Method of operating a rotary calciner retrofitted to coal-firingExpiredNov 12, 82Jul 31, 84[F27B]
4401635 Recovery of alkali values from salt-containing trona depositsExpiredJan 19, 81Aug 30, 83[C22B, C01D, E21C]
4375454 Electrostatic enrichment of trona and nahcolite oresExpiredDec 12, 80Mar 01, 83[C22B, B03C, C01D]
4344650 Recovery of alkali values from trona depositsExpiredDec 15, 80Aug 17, 82[E21B]
4299799 Carbon treatment of monohydrate crystallizer liquorExpiredApr 09, 80Nov 10, 81[C22B, C01D]
4288419 Enhanced recovery of sodium carbonate from NaCl-containing sodium carbonate solutionsExpiredApr 04, 80Sep 08, 81[E21B, C01D]
4285915 Recovery of alkali values from trona oreExpiredApr 23, 80Aug 25, 81[C22B, F21B, C01D]
4283372 Recovery of alkali values from sodium bicarbonate-containing ore with ammoniaExpiredJan 29, 80Aug 11, 81[C22B, C01D, E21C]

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