EC Erdolchemie GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 4134
 
  
 
B01D SEPARATION 1133
 
  
 
C10L FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUEFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS 141

Top Patents (by citation)

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6175049 Process for the production of 1, 2-butadieneAug 17, 99Jan 16, 01[C07C]
5969205 Process for preparing C.sub.4 --C.sub.6 --alkenes having an internal double bond comprising recycling a portion of a product streamAug 21, 98Oct 19, 99[C07C]
5789643 Process for oligomerizing I-butene comprising hydroisomerizing portion of condensate and recycling the hydroisomerate to fractionationOct 30, 97Aug 04, 98[C07C]
5141525 Process for producing high-octane, low-olefin motor fuels and motor fuel componentsApr 18, 91Aug 25, 92[C10L]
5095164 Process for cleaving alkyl tert.-alkyl ethersMar 07, 91Mar 10, 92[C07C]
5091093 Process for purifying acrylonitrile effluentJul 03, 91Feb 25, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6951967 Process for the preparation of tertiary alcohols by the hydration of tertiary olefins in a reactive rectification using a structured multi-purpose packingExpiredFeb 13, 03Oct 04, 05[C07C]
6087299 Silver-containing supported catalysts and catalyst intermediates, processes for their preparation and their useExpiredJan 26, 99Jul 11, 00[C07D, B01J]
6074982 Catalyst agent for etherifying, hydrogenating and isomerizing crude . C.sub4 -C.sub.8 - hydrocarbon mixtures having sulfur contentExpiredOct 20, 97Jun 13, 00[B01J]
5378668 Process for reactivating ammoxidation catalystsExpiredApr 12, 93Jan 03, 95[C07C, B01J]
5141732 Process for the removal of ammonium sulphate from tarrich waste streams from the production of (meth) acrylonitrileExpiredApr 04, 91Aug 25, 92[C01C]
5084070 Gum-free components containing alkyl tert.-alkyl ethersExpiredJan 07, 91Jan 28, 92[C10L]
5012031 Process for the preparation of tert.-olefinsExpiredMar 07, 89Apr 30, 91[C07C]
5008466 Process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bondExpiredApr 12, 89Apr 16, 91[C07C]
4960961 Process for the preparation of tert.-amyl alcohol (TAA)ExpiredJan 06, 89Oct 02, 90[C07C]
4950820 Process for the hydrogenation of olefinic hydrocarbons in hydrocarbon mixtures containing tert.-alkyl alkyl ethersExpiredJul 14, 86Aug 21, 90[C07C]
4910046 Paint resin and its use for powder coatingExpiredOct 25, 88Mar 20, 90[B05D]
4882393 Ionomer-modified polyethylene as film materialExpiredAug 10, 88Nov 21, 89[C08F]
4856985 Device for feeding gases into combustion chambers and process for diminishing pollutants during combustion operationsExpiredSep 06, 88Aug 15, 89[F23D]
4804704 Crosslinked organic resins containing SiO.sub.2 and sulphonic acid groupsExpiredMar 10, 87Feb 14, 89[C08K]
4751343 Process for the preparation of tertiary olefinsExpiredMar 10, 87Jun 14, 88[C07C]
4712434 Device for emission-free sampling of volatile liquidsExpiredOct 01, 86Dec 15, 87[G01N]
4655798 Process for removing acetylene from a C.sub.2 -streamExpiredApr 03, 85Apr 07, 87[B01D]
4504688 Process for the preparation of pure alkyl tert-alkyl ethers and hydrocarbon raffinates which are largely free from isoolefins and from alkanolsExpiredMar 07, 84Mar 12, 85[C07C]
4503265 Process for the production of methyl tert.-butyl ether (MTBE) and of hydrocarbon raffinates substantially freed from i-butene and from methanolExpiredNov 18, 82Mar 05, 85[C07C]
4431528 Process for the hydrogenation of hydrocarbonsExpiredJun 25, 82Feb 14, 84[C10G]

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