Inventor · disambiguated record

Helmut Protzer

Also filed as: PROTZER HELMUT

2 granted patents·14 citations·filing 1991–1996

57Inventor score

Technology areasC25D E04D

Files withKABELMETAL AG1 KM EUROPA METAL AG1

Top patents by PatentIndex Score

2 records

0141US5714052AMethod for producing brochantite patina on copperKM EUROPA METAL AG·Filed 1996·Granted Feb 3, 1998·8 cites·16 claims
0221US5282890AProcess for producing brown covering layers on copperKABELMETAL AG·Filed 1991·Granted Feb 1, 1994·6 cites·6 claims

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