Inventor
HAMMERSCHMIDT ERICH
DE9 patents
⚠️ This page may combine multiple inventors who share the name “HAMMERSCHMIDT ERICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
8 patentsUS4795596AJan 3, 1989
1-Aminomethylnaphthalene-6-sulphonic acid, its preparation and its use
BAYER AG3 citations61
US6458954B2Oct 1, 2002
Process for preparing piperidines
BAYER AG2 citations60
US4874892AOct 17, 1989
Process for the preparation of 6-hydroxynaphthalene-1-carboxylic from 1-aminomethylnaphthalene-6-sulphonic acid
BAYER AG0 citations51
US4806619AFeb 21, 1989
Thermotropic aromatic polyesters having a high deflection temperature under load and excellent mechanical properties, a process for their preparation and their use for the production of moldings, filaments, fibres and films
BAYER AG0 citations51
US4705652ANov 10, 1987
Tetra-alkali metal salts of chromotropic acid, a process for their isolation and their use
BAYER AG0 citations51
US4427601AJan 24, 1984
Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol acid)
BAYER AG1 citations50
US4426333AJan 17, 1984
Process for the preparation of 1-benzoylamino-8-hydroxynaphthalene-4,6-disulphonic acid (benzoyl-K acid)
BAYER AG1 citations49
US5869735AFeb 9, 1999
Process for the preparation of alkyl aryl ethers containing carboxyl groups
BAYER AG0 citations47