Inventor
HEYDENREICH FRIEDER
22 patents
Patents
22 patentsUS6211417B1Apr 3, 2001
Process for preparing bis-(4-hydroxyaryl) alkanes
BAYER AG26 citations92
US6726354B1Apr 27, 2004
Device for mixing and reacting multiphase gaseous and liquid mixtures and use of this device
BAYER AG20 citations89
US4369293AJan 18, 1983
Catalyst for the preparation of bisphenols
BAYER AG37 citations89
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
US4362846ADec 7, 1982
Polyamide moulding compounds having high impact strength
BAYER AG24 citations81
US6689464B1Feb 10, 2004
Method and device for producing bisphenol a prills and bisphenol a prills produced according to this method
BAYER AG8 citations73
US6682794B1Jan 27, 2004
Polycarbonate containers
BAYER AG8 citations73
US6414198B1Jul 2, 2002
Method for producing bisphenol-A
BAYER AG8 citations73
US6384288B1May 7, 2002
Method for the production of bis(4-hydroxyaryl)alkanes
BAYER AG7 citations73
US6395864B1May 28, 2002
Polycarbonates with a low yellowness index
BAYER AG9 citations72
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
US6417318B1Jul 9, 2002
Process for the removal of dissolved oxygen from phenol
BAYER AG2 citations62
US4293662AOct 6, 1981
Polyamides containing oxidized polyethylene
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
US6316678B1Nov 13, 2001
Method for producing dis(4-hydroxyaryl) alkanes
BAYER AG0 citations52
US6695991B1Feb 24, 2004
Device for exchanging a die plate of a prilling tower and method for the automatic exchange
BAYER AG1 citations50