Inventor

POHL FRITZ

DE39 patents

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

POHL FRITZ

SIEMENS AG

Variable high-current resistor, especially for use as protective element in power switching applications &amp; circuit making use of high-current resistor

Method and device for the safe operation of a switching device

Method of establishing the residual useful life of contacts in switchgear and associated arrangement

Method for determining switchgear-specific data at contacts in switchgear and/or operation-specific data in a network connected to the switchgear and apparatus for carrying out the method

Electromechanical switching device and arrangement with several switching devices

Method of establishing the residual useful life of contacts in switchgear and associated arrangement

Method and device for the secure operation of a switching device

Method of monitoring state parameters in a switching device, and associated device

Electromechanical switching device

Limiter for current limiting

Arrangement for disconnecting branches of a low voltage supply network under short circuit conditions

Electromechanical protection devcie

Differential current protection circuit breaker

Device for short-circuit protection

Method and device for securely operating a switching device

Method and device for the secure operation of a switching device

Method for operating a switch with a connectable current limiter and corresponding arrangement

Fault-current protective switchgear

Current-limiting switch

Method and device for the secure operation of a switching device

BAYER MATERIALSCIENCE AG

Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation

Process for the preparation of isocyanates in the gas phase

Process for the preparation of isocyanates in the gas phase

Process for the production of di- and polyamines of the diphenylmethane series

Process for the production of dinitrotoluene

Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes

POHL FRITZ

Method in which elemental particles electrophoretically migrate through a gel onto a collecting surface of a moving belt

Method and device for operating a switching device

Electrophoretic apparatus employing a collecting belt moving in contact with a gel

Process for preparing methylenediphenyl diisocyanates

Process for the production of aromatic diisocyanates in the gas

BAYER AG

Continuous process for preparing aromatic amines

Process for the isolation of 2-naphthylamine-1,5-disulphonic acid

BISKUP KLAUS

Process for the preparation of isocyanates in the gas phase

Process for the preparation of isocyanates in the gas phase

HOECHST AG

Process for the fluorination of polymers, and perfluorinated ion exchangers

BAYER METERIALSCIENCE AG

Process for preparing diamines and polyamines from the diphenylmethane series

BAYER MATERIALSCIENCE LLC

Process for the continuous preparation of isocyanates

WERSHOFEN STEFAN

Process for producing diamines and polyamines of the diphenylmethane series

Variable high-current resistor, especially for use as protective element in power switching applications & circuit making use of high-current resistor