Inventor

WELZIG GERHARD

DE4 patents

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

ALD VACUUM TECHN AG

1 patent

US6913449B2Jul 5, 2005

Apparatus for the treatment of metallic workpieces with cooling gas

ALD VACUUM TECHN AG11 citations66

DEGUSSA

1 patent

US5035611AJul 30, 1991

Apparatus for controlling gas flows in vacuum furnaces

DEGUSSA14 citations62

HEUER VOLKER

1 patent

US9518318B2Dec 13, 2016

Method and device for hardening work pieces and workpieces hardened according to said method

HEUER VOLKER1 citations40

ALD VACUUM TECHN GMBH

1 patent

US10196730B2Feb 5, 2019

Method and device for hardening workpieces, and workpieces hardened according to the method

ALD VACUUM TECHN GMBH0 citations35