Inventor

MUELLER FRIEDHELM

24 patents

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

MUELLER FRIEDHELM

BAYER AG

Paper-coating slips containing fluorescent brighteners

Polyamines containing amide groups

Forgery-proof paper

Cationic sizing agents for paper

Dyestuff solutions, their preparation and their use for dyeing paper

Aqueous reaction of polyamine with alkylene dihalide in presence of emulsifier

Low-foam surface sizing agents for paper which contain copolymeric _maleic anhydride semi-amides

Surface-active phosphonic acid esters

Cationic triazinylamino azo dyestuffs

Polyamines containing urea groups prepared from lactam or aminocarboxylic acid

Polyamines containing urea groups

SIEMENS AG

Separation-column unit for a gas-chromatograph and method for making the same

Method and apparatus for regulating the carrier gas pressure for separation column arrangements in gas chromatography

Method for the gas chromatographic analysis of a sample, and analyzer

Gas flow switching device

Device and method for sample dosing in gas chromatography

Branch coupling for use between capillary columns of gas chromatographs

Temperature controlled oven chamber for gas chromatography

System for determining total sulfur content

Gas chromatograph

WERNER & PFLEIDERER

Temperature sensor for mixing and kneading machines

MUELLER FRIEDHELM

Gas chromatograph and method for analyzing a mixture of substances by gas chromatography

CONTINENTAL AG

Internal mixer

SIEMENS AKTIENGESELLSACHAFT

Gas chromatograph with a mass spectrometer situated down therefrom, and method for performing the gas chromatographic/mass spectrometric analysis of a substance mixture