Yinfeng Shi

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Frankfurt am Main, DE

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Patents Grantslast 30 patents

Information Patent Grant
Simplified method for pretreating metal substrates for cold forming...
- Patent number 12,139,690
- Issue date Nov 12, 2024
- Chemetall GmbH
- Frank Hollmann
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
SIMPLIFIED PROCESS FOR THE PRETREATMENT OF METALLIC SUBSTRATES FOR...
- Publication number 20240425775
- Publication date Dec 26, 2024
- CHEMETALL GMBH
- Frank Hollmann
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
ONE-STEP PRETREATMENT METHOD OF METALLIC SUBSTRATES AT NON-NEUTRAL...
- Publication number 20240166968
- Publication date May 23, 2024
- CHEMETALL GMBH
- Yinfeng SHI
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
ONE-STEP PRETREATMENT METHOD OF METALLIC SUBSTRATES FOR METAL COLD...
- Publication number 20230106175
- Publication date Apr 6, 2023
- CHEMETALL GMBH
- Yinfeng SHI
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
ONE-STEP PRETREATMENT METHOD OF METALLIC SUBSTRATES FOR METAL COLD...
- Publication number 20230091443
- Publication date Mar 23, 2023
- CHEMETALL GMBH
- Yinfeng SHI
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
SIMPLIFIED METHOD FOR PRETREATING METAL SUBSTRATES FOR COLD FORMING...
- Publication number 20220119730
- Publication date Apr 21, 2022
- CHEMETALL GMBH
- Frank Hollmann
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...