Charles Chang

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South Pasadena, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Database game playing system based on pregenerated data
- Patent number 10,930,111
- Issue date Feb 23, 2021
- Wayne Chiang
- Wayne Chiang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Hermetically-sealed container and closure construction
- Patent number 5,875,918
- Issue date Mar 2, 1999
- Charles Chang
- Robert J. Sheffler
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
Cosmetic container having a clean finish
- Publication number 20020071706
- Publication date Jun 13, 2002
- Charles Chang
- Robert J. Sheffler
- A45 - HAND OR TRAVELLING ARTICLES

Trademarklast 30 trademarks