The Halcon SD Group, 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 1137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5138093 Process for preparing ethylidene diacetateFeb 05, 76Aug 11, 92[C07C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4781862 Process for the preparation of anthraquinoneExpiredJul 08, 86Nov 01, 88[C07C, B01J]
4698187 Preparation of carboxylic acid anhydridesExpiredNov 15, 85Oct 06, 87[C07C]
4666632 Process for the preparation of anthraquinoneExpiredJul 08, 86May 19, 87[C07C, B01J]
4661631 Process for the preparation of acetic acidExpiredDec 28, 83Apr 28, 87[C07C]
4659682 Recovery of noble metal values from carbonylation residuesExpiredJul 08, 85Apr 21, 87[C07C, B01J]
4659518 Preparation of carboxylic acidsExpiredDec 24, 80Apr 21, 87[C07C]
4650615 Purification of carboxylic acid anhydrides contaminated with halogen or halidesExpiredJul 24, 85Mar 17, 87[C07C]
4631348 Preparation of acetic acidExpiredJun 19, 85Dec 23, 86[C07C]
4628121 Preparation of acetaldehydeExpiredSep 27, 85Dec 09, 86[C07C]
4625060 Preparation of acetic acidExpiredMay 28, 81Nov 25, 86[C07C]
4625055 Preparation of carboxylic acidsExpiredJun 03, 85Nov 25, 86[C07C]
4618705 Process for conversion of acid anhydrides to alkylidene diestersExpiredJan 22, 82Oct 21, 86[C07C]
4608444 Process and accompanying catalysts for the hydroformylation of formaldehyde to glycol-aldehydeExpiredMar 01, 85Aug 26, 86[C07C]
4605541 Recovery of noble metal values from carbonylation residues using immiscible liquidsExpiredAug 26, 85Aug 12, 86[C01G]
4560806 Process and catalyst useful in the production of glycol aldehydeExpiredApr 05, 84Dec 24, 85[C07C]
4559183 Preparation of carboxylic acid anhydridesExpiredAug 27, 84Dec 17, 85[C07C]
4558026 Catalyst comprising tellurium chemically bound to aromatic polymerExpiredAug 24, 84Dec 10, 85[C08F, C07C, B01J]
4551560 Thermally-induced hydrolysis of acetalExpiredNov 09, 84Nov 05, 85[C07C]
4540811 Preparation of carboxylic acid estersExpiredSep 30, 82Sep 10, 85[C07C]
4537871 Carbonylation catalystExpiredApr 23, 84Aug 27, 85[C07C, B01J]

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