Inventor

WENNEMANN WERNER

4 patents

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

HOESCH WERKE AG

2 patents

US4823847AApr 25, 1989

Multi-layer helical seam steel pipe

HOESCH WERKE AG31 citations87

US4247033AJan 27, 1981

Method of and device for producing multi-layer pipes

HOESCH WERKE AG11 citations70

HOESCH AG

1 patent

US4721536AJan 26, 1988

Method for making steel tubes or pipes of increased acidic gas resistance

HOESCH AG55 citations89

GROSS HEINZ

1 patent

US4688319AAug 25, 1987

Multi-layer helical seam steel pipe

GROSS HEINZ29 citations89