Inventor

AHRENS HANS-JOACHIM

DE4 patents

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

AHRENS HANS JOACHIM

1 patent

US5242234ASep 7, 1993

Drawing pen

AHRENS HANS JOACHIM20 citations73

ROTRING INT GMBH

1 patent

US5427463AJun 27, 1995

Ink writing implement

ROTRING INT GMBH13 citations70

RPC WIKO GMBH

1 patent

US7757900B2Jul 20, 2010

Dispenser pump

RPC WIKO GMBH7 citations63

AHRENS ELVIRA

1 patent

US8579532B2Nov 12, 2013

Dosing device comprising a monolithic, resilient roll

AHRENS ELVIRA0 citations19