Ronald R. Freiheit

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Owatonna, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Tunable acoustic panel
- Patent number 9,404,252
- Issue date Aug 2, 2016
- Wenger Corporation
- Dixon Gimpel
- E04 - BUILDING
Information Patent Grant
Tunable acoustic panel
- Patent number 9,145,675
- Issue date Sep 29, 2015
- Wenger Corporation
- Dixon Gimpel
- E04 - BUILDING
Information Patent Grant
Acoustic cabinet
- Patent number 7,921,960
- Issue date Apr 12, 2011
- Wenger Corporation
- Kenneth E. Jacobson
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Cabinet grille
- Patent number D606339
- Issue date Dec 22, 2009
- Wenger Corporation
- Kenneth E. Jacobson
- D06 - Furnishings
Information Patent Grant
Active acoustics performance shell
- Patent number 7,600,608
- Issue date Oct 13, 2009
- Wenger Corporation
- Ronald R. Freiheit
- E04 - BUILDING
Information Patent Grant
Acoustical virtual environment
- Patent number 5,525,765
- Issue date Jun 11, 1996
- Wenger Corporation
- Ronald R. Freiheit
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
TUNABLE ACOUSTIC PANEL
- Publication number 20150368899
- Publication date Dec 24, 2015
- Wenger Corporation
- Dixon Gimpel
- E04 - BUILDING
Information Patent Application
TUNABLE ACOUSTIC PANEL
- Publication number 20140353079
- Publication date Dec 4, 2014
- Dixon Gimpel
- E04 - BUILDING
Information Patent Application
ACOUSTIC CABINET
- Publication number 20080023266
- Publication date Jan 31, 2008
- Kenneth E. Jacobson
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Application
Active acoustics performance shell
- Publication number 20060060420
- Publication date Mar 23, 2006
- Ronald R. Freiheit
- E04 - BUILDING