Inventor
PIRKL HANS-GEORG
DE16 patents
⚠️ This page may combine multiple inventors who share the name “PIRKL HANS-GEORG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
6 patentsUS6054553AApr 25, 2000
Process for the preparation of polymers having recurring agents
BAYER AG201 citations98
US5616818AApr 1, 1997
Process for the polynitration of aromatic compounds
BAYER AG27 citations91
US6649798B2Nov 18, 2003
Method for production of diaminodiphenylmethanes
BAYER AG15 citations82
US7041776B2May 9, 2006
Process for the production of polyisocyanates of the diphenylmethane series by phosgenation of non-neutralized polyamine of the diphenylmethane series
BAYER AG8 citations73
US6528690B2Mar 4, 2003
Adiabatic process for producing dinitrotoluene
BAYER AG5 citations61
US5679761AOct 21, 1997
Iminodisuccinate-containing polymers
BAYER AG3 citations59
BAYER MATERIALSCIENCE AG
6 patentsUS7253321B2Aug 7, 2007
Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation
BAYER MATERIALSCIENCE AG23 citations92
US7495124B2Feb 24, 2009
Process for the production of very pure 2,4′-methylenediphenyl diisocyanate
BAYER MATERIALSCIENCE AG10 citations82
US7038002B2May 2, 2006
Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4′-methylenediphenyl diisocyanate and 2,4′-methylenediphenyl diisocyanate
BAYER MATERIALSCIENCE AG9 citations68
US7745659B2Jun 29, 2010
Process for the production of liquid, storage-stable organic isocyanates with a low colour index having carbodiimide- and/or uretone imine groups
BAYER MATERIALSCIENCE AG2 citations62
US8022200B2Sep 20, 2011
Process for the preparation of liquid, storage-stable organic isocyanates of low color number containing carbodiimide and/or uretonimine groups
BAYER MATERIALSCIENCE AG3 citations59
US7662634B2Feb 16, 2010
Method and device for determining the isomer composition in isocyanate production processes
BAYER MATERIALSCIENCE AG1 citations45