Schal; Hans-Peter

Patent Applications and Registrations

Patent applications and USPTO patent grants for Schal; Hans-Peter.The latest application filed is for "process for the distillation of a mixture of isomeric diisocyanatodiphenyl-methanes".

Company Profile

0.4.4

Schal; Hans-Peter - Dormagen DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes Grant 7,649,108 - Schal , et al. January 19, 2	2010-01-19
Process for the distillation of a mixture of isomeric diisocyanatodiphenyl-methanes Grant 7,521,576 - Schal , et al. April 21, 2	2009-04-21
Process for the purification of toluene diisocyanate incorporating a dividing-wall distillation column for the final purification Grant 7,108,770 - Grun , et al. September 19, 2	2006-09-19
Process for the distillation of a mixture of isomeric diisocyanatodiphenyl-methanes App 20060173206 - Schal; Hans-Peter ; et al.	2006-08-03
Process for the production of 1,5-dinitronaphthalene Grant 6,992,230 - Schal , et al. January 31, 2	2006-01-31
Process for the production of 1,5-dinitronaphthalene App 20050107646 - Schal, Hans-Peter ; et al.	2005-05-19
Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes App 20040236139 - Schal, Hans-Peter ; et al.	2004-11-25
Process for the purification of toluenediisocyanate incorporating a dividing-wall distillation column for the final purification App 20040118672 - Grun, Marcus Paul ; et al.	2004-06-24

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