American Hoechst Corporation
Patent Owner
Stats
- 2 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 24, 1993 most recent publication
Details
- 2 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,771 Total Citation Count
- Apr 10, 1974 Earliest Filing
- 142 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4942000 Contactless knurling process for winding of high modulus thermoplastic filmsExpiredJul 30, 86Jul 17, 90[B29C]
4769182 Process for production of 3-(hydroxyphenylphosphinyl)-propanoic acidExpiredJun 05, 85Sep 06, 88[C07F]
4762524 Composition comprising the addition product of a vinyl-sulfone dye and a secondary amine and process for dyeing a polyamide therewithExpiredFeb 05, 87Aug 09, 88[C09B]
4760134 Process for the preparation of the copper complex disazo compounds from disazo compounds containing an O'-alkoxyaniline group by coppering dimethylation at a pH at about 3-6ExpiredAug 28, 85Jul 26, 88[C09B]
4729935 Process for the production of photographic images utilizing a negative working diazo contact filmExpiredOct 18, 85Mar 08, 88[G03C, G03F]
4692397 Process for developing an aqueous alkaline development diazo photographic elementExpiredNov 27, 85Sep 08, 87[G03F]
4692398 Process of using photoresist treating composition containing a mixture of a hexa-alkyl disilazane, propylene glycol alkyl ether and propylene glycol alkyl ether acetateExpiredOct 28, 85Sep 08, 87[G03C]
4681723 Calender band stripping section and process for stripping calendered sheetExpiredNov 01, 85Jul 21, 87[B29C]
4664709 Azoacylacetamide dispersing agents and azo-pigment compositionsExpiredFeb 25, 85May 12, 87[C07C]
4661056 Turbulent incineration of combustible materials supplied in low pressure laminar flowExpiredMar 14, 86Apr 28, 87[F23G, F23J, F23D]
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