MERICHEM COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 15119
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 1151
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF970
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 6132
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 550
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
C01D COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM 213

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9656185 Contactor and separation apparatus and process of using sameJul 11, 12May 23, 17[B01D]
9458392 Hydrocarbon treatment processNov 03, 14Oct 04, 16[C10G]
8906230 Apparatus for treating a waste streamSep 18, 12Dec 09, 14[C02F, B01D]
8900446 Hydrocarbon treatment processJan 31, 11Dec 02, 14[C10G]
8815083 Treating sulfur containing hydrocarbons recovered from hydrocarbonaceous depositsNov 29, 12Aug 26, 14[C10G, B01D]
8652435 High pressure reduction-oxidation desulfurization processJan 08, 13Feb 18, 14[C01B, C07C, B01D]
8597375 Three phase sulfur separation method with interface controlJan 03, 13Dec 03, 13[C01B]
8574429 Sulfone removal from an oxidized hydrocarbon fuelAug 31, 10Nov 05, 13[C10G]
8454824 Single vertical tower for treating a stream of rich caustic containing mercaptan compoundsOct 09, 12Jun 04, 13[B01D]
8372365 High pressure reduction-oxidation desulfurization processOct 27, 10Feb 12, 13[C01B, B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0273,405 APPARATUS FOR TREATING A WASTE STREAMAbandonedJul 12, 12Nov 01, 12[B01D]
2011/0127,194 Hydrocarbon Treatment ProcessAbandonedNov 30, 09Jun 02, 11[C09K, C10G]
2008/0026,152 Process for post-treatment of amine-based preservative-treated woodAbandonedJul 28, 06Jan 31, 08[B05D]
2004/0158,113 Catalysts and process for converting fuel gases to gasolineAbandonedFeb 06, 03Aug 12, 04[C07C, B32B]
6749425 Indirect heating furnaceExpiredMar 26, 03Jun 15, 04[F27B]
5437718 Naphthenic acid esters as dispensing agents for pigment additives and products incorporating sameExpiredSep 14, 94Aug 01, 95[C09C]
5383965 Naphthenic acid esters as dispersing agents for pigment additives and products incorporating sameExpiredFeb 05, 93Jan 24, 95[C09C]
5167940 Process and apparatus for removal of H.sub.2 S from a process gas including polyvalent metal removal and decomposition of salts and complexesExpiredDec 20, 90Dec 01, 92[C01B]
5122351 Method and apparatus for removing H.sub.2 S from a process gas and recovering sulfurExpiredDec 20, 90Jun 16, 92[C01B]
5011579 Neutral oil recovery process for the production of naphthenic acidsExpiredJan 16, 90Apr 30, 91[B01D]
4956325 Method of impregnating a support materialExpiredMar 23, 89Sep 11, 90[B01J]
4885268 Catalyst composition and methodExpiredMar 30, 88Dec 05, 89[B01J]
4753722 Treatment of mercaptan-containing streams utilizing nitrogen based promotersExpiredJun 17, 86Jun 28, 88[C10G]
4746494 Treatment of sour hydrocarbon distillateExpiredJul 21, 86May 24, 88[B01J, C10G]
4675100 Treatment of sour hydrocarbon distillateExpiredMay 30, 85Jun 23, 87[C10G]
4666689 Process for regenerating an alkaline stream containing mercaptan compoundsExpiredJan 13, 86May 19, 87[C01D]
4520002 Method for preparing elemental sulfur as a diffusion-resistant gas and methods for its use in making lime, sulfur dioxide and sulfuric acid from waste gypsumExpiredJan 20, 84May 28, 85[C01B]
4193967 Liquid sealing apparatus for sealing vapors in a tankExpiredOct 16, 78Mar 18, 80[F16L, B01D]

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