Inventor
PREIN MICHAEL
DE26 patents
⚠️ This page may combine multiple inventors who share the name “PREIN MICHAEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
18 patentsUS6291630B1Sep 18, 2001
Method for producing a liquid formulation of tetraphenylphosphonium phenolate
BAYER AG55 citations95
US6887970B2May 3, 2005
Method for producing polycarbonates
BAYER AG15 citations84
US6710211B1Mar 23, 2004
Method for the production of bisphenol-a
BAYER AG17 citations84
US6906227B2Jun 14, 2005
Bisphenol phenol adducts
BAYER AG16 citations83
US6723881B1Apr 20, 2004
Method for conditioning ion exchangers
BAYER AG16 citations83
US6706848B1Mar 16, 2004
Method for producing polycarbonate
BAYER AG7 citations73
US6703473B2Mar 9, 2004
Process for producing polycarbonate
BAYER AG9 citations73
US6682794B1Jan 27, 2004
Polycarbonate containers
BAYER AG8 citations73
US6509406B1Jan 21, 2003
Plastic molding materials which can be detected by X-ray contrast
BAYER AG12 citations73
US6395864B1May 28, 2002
Polycarbonates with a low yellowness index
BAYER AG9 citations72
US6675844B2Jan 13, 2004
Method of loading moist, sticky bulk material into a fluid pervious container
BAYER AG7 citations71
US6919487B2Jul 19, 2005
Bis(4-hydroxyaryl)alkanes
BAYER AG2 citations62
US6828465B2Dec 7, 2004
Method for producing bisphenols
BAYER AG6 citations62
US6723885B1Apr 20, 2004
Bisphenol production
BAYER AG5 citations62
US6683223B2Jan 27, 2004
Fluidised bisphenol dust
BAYER AG2 citations59
US6590128B1Jul 8, 2003
Initiation method of a method for producing 2,2-bis(4-hydroxyphenyl)propane
BAYER AG6 citations59
US6774268B2Aug 10, 2004
Substance mixture containing bisphenol A
BAYER AG0 citations52
US6710152B1Mar 23, 2004
Solid particles
BAYER AG0 citations51
BAYER MATERIALSCIENCE AG
5 patentsUS7301056B2Nov 27, 2007
Process for the separation of phenol from phenol-containing streams from the preparation of Bisphenol A
BAYER MATERIALSCIENCE AG2 citations61
US7799889B2Sep 21, 2010
Polycarbonates with good wettability
BAYER MATERIALSCIENCE AG4 citations60
US7582720B2Sep 1, 2009
Light-scattering shaped articles of high light transmission and the use thereof in flat screens
BAYER MATERIALSCIENCE AG3 citations59
US7071283B2Jul 4, 2006
Reactive rectification
BAYER MATERIALSCIENCE AG0 citations46
US7763757B2Jul 27, 2010
Crystallization processes for producing bisphenols
BAYER MATERIALSCIENCE AG0 citations36