P

Inventor

KREFT WILFRIED

DE8 patents
⚠️ This page may combine multiple inventors who share the name “KREFT WILFRIED”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KRUPP POLYSIUS AG

4 patents
US4492566AJan 8, 1985

Method and apparatus for heat treatment of fine-grained material

KRUPP POLYSIUS AG8 citations71
US4579526AApr 1, 1986

Method and apparatus for the heat treatment of fine-grained material

KRUPP POLYSIUS AG5 citations59
US6030448AFeb 29, 2000

Method for producing cement clinker

KRUPP POLYSIUS AG4 citations58
US4457082AJul 3, 1984

Heat exchanger

KRUPP POLYSIUS AG2 citations58

POLYSIUS AG

2 patents
US4127406ANov 28, 1978

Process for the heat treatment of fine material

POLYSIUS AG9 citations72
US4213790AJul 22, 1980

Process for the production of cement in a fluidized bed

POLYSIUS AG2 citations57

ORENSTEIN & KOPPEL AG

2 patents
US5264654ANov 23, 1993

Method and apparatus for processing contaminated soils

ORENSTEIN & KOPPEL AG15 citations68
US5244383ASep 14, 1993

Method and apparatus for reducing the circulation of salts particularly in cement kilns

ORENSTEIN & KOPPEL AG3 citations52