Fukyuen Cheng

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Ngau Tau Kok, HK

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Patents Grantslast 30 patents

Information Patent Grant
Methods to prevent wheel slip in an autonomous floor cleaner
- Patent number 7,832,048
- Issue date Nov 16, 2010
- S. C. Johnson & Son, Inc.
- Jeffrey L. Harwig
- G05 - CONTROLLING REGULATING
Information Patent Grant
Surface treating device with top load cartridge-based cleaning system
- Patent number 7,578,020
- Issue date Aug 25, 2009
- S. C. Johnson & Son, Inc.
- Thomas Jaworski
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Methods to prevent wheel slip in an autonomous floor cleaner
- Patent number 7,389,166
- Issue date Jun 17, 2008
- S. C. Johnson & Son, Inc.
- Jeffrey L. Harwig
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
METHODS TO PREVENT WHEEL SLIP IN AN AUTONOMOUS FLOOR CLEANER
- Publication number 20080188984
- Publication date Aug 7, 2008
- Jeffrey L. Harwig
- G05 - CONTROLLING REGULATING
Information Patent Application
Methods to prevent wheel slip in an autonomous floor cleaner
- Publication number 20060293809
- Publication date Dec 28, 2006
- Jeffrey L. Harwig
- G05 - CONTROLLING REGULATING
Information Patent Application
Surface treating device with top load cartridge-based cleaning systsem
- Publication number 20060288519
- Publication date Dec 28, 2006
- Thomas Jaworski
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...