P

Inventor

PREISS MICHAEL

41 patents
⚠️ This page may combine multiple inventors who share the name “PREISS MICHAEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAYER AG

25 patents
US4600778AJul 15, 1986

Process for the preparation of 1,4-dihydropyridinedicarboxylic esters

BAYER AG19 citations78
US5155223AOct 13, 1992

Preparation of quinolinecarboxylic acids

BAYER AG19 citations74
US4386089AMay 31, 1983

β-Lactam antibiotics and their medicinal use

BAYER AG10 citations74
US4147693AApr 3, 1979

βLactam antibiotics and process for their use

BAYER AG8 citations74
US4200576AApr 29, 1980

Beta-lactam antibiotics

BAYER AG8 citations73
US4389489AJun 21, 1983

Optically pure heterocyclic aminoacid compounds, a process for their use for the synthesis of medicaments

BAYER AG15 citations72
US4973590ANov 27, 1990

Process for the preparation of quinolonecarboxylic acids which can be administered parenterally

BAYER AG13 citations70
US4294827AOct 13, 1981

Antibacterial and growth promoting β-lactam antibiotics carrying an -ylidene-2-pyrrolidinon-1-yl radical

BAYER AG3 citations63
US4235774ANov 25, 1980

Penicillin derivatives

BAYER AG5 citations63
US4223037ASep 16, 1980

β-Lactam antibiotics and their use

BAYER AG4 citations63
US4107304AAug 15, 1978

Oxo-imidazolidine substituted cephalosporins and antibacterial compositions and methods of combatting bacteria employing them

BAYER AG5 citations63
US4093722AJun 6, 1978

Sulfonylimidazolidone substituted cephalosporins, antibacterial compositions containing them, and methods of combatting bacteria employing them

BAYER AG3 citations63
US4086340AApr 25, 1978

Cephalosporins and their production

BAYER AG3 citations63
US4450297AMay 22, 1984

Preparation of o-nitrobenzaldehyde

BAYER AG3 citations62
US4215118AJul 29, 1980

2-Hetero-acetamido-penicillanates and cephalosporinates

BAYER AG3 citations62
US4086341AApr 25, 1978

Cephalosporin derivatives

BAYER AG2 citations62
US4029806AJun 14, 1977

Nitro-β-lactam antibiotics and processes for their preparation and use

BAYER AG4 citations62
US4012518AMar 15, 1977

Nitro-β-lactam antibiotics and processes for their preparation and use

BAYER AG2 citations62
US6172259B1Jan 9, 2001

Production of enantiomer-free biarylketocarboxylic acids

BAYER AG1 citations52
US4633007ADec 30, 1986

Preparation of benzylidene compounds

BAYER AG0 citations52
US4251524AFeb 17, 1981

β-Lactam antibiotics

BAYER AG1 citations52
US4208412AJun 17, 1980

β-Lactam antibiotics

BAYER AG1 citations52
US4182762AJan 8, 1980

Dioxopiperazine derivatives suitable for use as medicaments and β-lactam antibiotic intermediates

BAYER AG1 citations52
US4338434AJul 6, 1982

2-Hetero-acetamido-cephalosporinates

BAYER AG1 citations50
US5095112AMar 10, 1992

Process for the preparation of quinolonecarboxylic acid esters

BAYER AG0 citations42

PORSCHE AG

14 patents

INC H C F PORSCHE AG DR

1 patent

PREISS MICHAEL

1 patent