Qingyu Zeng

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Solon, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Spacer for insulating glazing unit
- Patent number 9,803,415
- Issue date Oct 31, 2017
- Quanex IG Systems, Inc.
- Louis Anthony Ferri
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Spacer for Insulating Glazing Unit
- Publication number 20150233173
- Publication date Aug 20, 2015
- Louis Anthony Ferri
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS