CHEMISCHE WERKE HULS AKTIENGESELLSCHAFT
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 16, 1993 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 2,459 Total Citation Count
- Sep 03, 1976 Earliest Filing
- 280 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Top Patents (by citation)
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5187221 Styrene/butadiene graft copolymer latex and heat-vulcanizable composition, containing the latter as reinforcing latex, for the production of latex foamExpiredJan 20, 88Feb 16, 93[C08L]
5019299 Process for the manufacture of wax-like esterification productsExpiredJun 06, 90May 28, 91[C09F]
4851552 Process for the production of 13-oxabicyclo(10.3.0)pentadecane and process for the production of intermediatesExpiredJan 10, 85Jul 25, 89[C07D, C07C]
4822869 Process for introducing gases into liquids in the production of polyphenylene ethers or sulfoxidized parrafins using horizontal reactorsExpiredSep 16, 86Apr 18, 89[C08G]
4808747 Process for producing alkylidene compounds and arylidene compoundsExpiredMar 14, 85Feb 28, 89[C07C]
4746723 Process for the production of a polyphenylene ether protected from molecular weight degradationExpiredMay 13, 85May 24, 88[C08G]
4708986 Process for producing thermoplastic molding compositions from polycondensation resins and aqueous latexesExpiredSep 13, 85Nov 24, 87[C08G]
4690970 Thermoplastic compositions based on polyphenylene ethers, impact-resistant styrene polymers, and pulverulent, filler-containing rubber; and method for manufacturing such compositionsExpiredJun 18, 85Sep 01, 87[C08K]
4659803 Process for purifying polyphenylene oxides obtained by interruption of the copper-amine catalyzed polycondensation of ortho-disubstituted phenolsExpiredJul 18, 84Apr 21, 87[C08G]
4659794 Process for the polymerization of polymers of vinyl chlorideExpiredFeb 05, 85Apr 21, 87[C08F]
4656220 Thermoplastic compositions based on polyphenylene ethers and polyoctenylenes, and method of manufacturing sameExpiredOct 04, 85Apr 07, 87[C08L]
4652343 Process for the separation of mixtures of paraffin or respectively paraffins of 6-14 carbon atoms and alcohol or respectively alcohols of 4-8ExpiredApr 17, 85Mar 24, 87[B01D]
4647613 Thermoplastic compositions based on polyphenylene ethers, styrene polymers, and polyoctenylenes, and methods of manufacturing sameExpiredOct 29, 85Mar 03, 87[C08L]
4626585 Method of producing a polyphenylene ether protected against molecular weight degradation, where the copper salt employed in the coupling reaction can be reusedExpiredMay 10, 85Dec 02, 86[C08G]
4622306 Process for protecting steam generators from material damageExpiredAug 14, 84Nov 11, 86[G01N]
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