GTC Technology Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 13125
 
  
 
B01D SEPARATION 8126
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 260

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7307188 Purification of carboxylic acids by complexation with selective solventsApr 08, 05Dec 11, 07[C07C]
6781026 Aromatics purification from petroleum streamsOct 21, 02Aug 24, 04[C07C]
6616831 Aromatics separation process and method of retrofitting existing equipment for sameMay 01, 00Sep 09, 03[C10G, B01D]
6565742 Aromatics separation process and method of retrofitting existing equipment for sameDec 30, 97May 20, 03[C10G]
6140534 Method for purifying isophthalic acid prepared from metaxyleneJan 13, 99Oct 31, 00[C07C]
6113866 Apparatus for preparing purified terephthalic acidNov 08, 99Sep 05, 00[B01D]
6054610 Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenesJun 16, 98Apr 25, 00[C07C]
6013835 Method and apparatus for preparing purified terephthalic acidDec 06, 96Jan 11, 00[C07C]
5961935 Method and apparatus for preparing purified terephthalic acidMay 07, 98Oct 05, 99[B01D]
5929274 Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acidJun 16, 98Jul 27, 99[C07C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6982234 Methods and apparatus for removing catalyst from oxidation reactor effluentExpiredDec 05, 02Jan 03, 06[C07C, B01J]
6180827 Recovery of acrylic acid from process or waste water streamsExpiredJan 14, 99Jan 30, 01[C07C]
6005157 Cycloparaffin purification from petroleum streamsExpiredMay 11, 98Dec 21, 99[C10G]
5516955 Catalytic distillation to produce orthoxylene and paraxyleneExpiredMar 30, 94May 14, 96[C07C]
5399244 Process to recover benzene from mixed hydrocarbons by extractive distillationExpiredDec 06, 93Mar 21, 95[C07C, B01D]
5389343 Catalyst assembly and method for chemical process towerExpiredOct 05, 93Feb 14, 95[B01J]
5277847 Method and apparatus for catalyst-downcomer-tray operationExpiredAug 10, 92Jan 11, 94[B01F]

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