H. Christian Hölljes

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San Rafael, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Active learning device and method
- Patent number 8,777,621
- Issue date Jul 15, 2014
- H. Christian Hölljes
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Active learning device and method
- Patent number 8,408,910
- Issue date Apr 2, 2013
- H. Christian Hölljes
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Active learning device and method
- Patent number 8,123,527
- Issue date Feb 28, 2012
- H. Christian Hölljes
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Plush toy with selectively populated display
- Patent number 6,055,032
- Issue date Apr 25, 2000
- OddzOn, Inc.
- Ralph F. Osterhout
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
ACTIVE LEARNING DEVICE AND METHOD
- Publication number 20130196291
- Publication date Aug 1, 2013
- H. Christian Hölljes
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
ACTIVE LEARNING DEVICE AND METHOD
- Publication number 20120165085
- Publication date Jun 28, 2012
- H. Christian Hölljes
- A63 - SPORTS GAMES AMUSEMENTS