Matthew A. Donarski

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Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Equal expansion rate symmetric acoustic transformer
- Patent number 9,264,789
- Issue date Feb 16, 2016
- Robert Bosch GmbH
- Matthew A Donarski
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Equal expansion rate symmetric acoustic transformer
- Patent number 8,761,425
- Issue date Jun 24, 2014
- Robert Bosch GmbH
- Matthew A Donarski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Annular ring acoustic transformer
- Patent number 8,588,450
- Issue date Nov 19, 2013
- Robert Bosch GmbH
- Matthew A Donarski
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Heyser spiral low frequency correction of FIR filters
- Patent number 8,306,242
- Issue date Nov 6, 2012
- Robert Bosch GmbH
- Matthew A Donarski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
EQUAL EXPANSION RATE SYMMETRIC ACOUSTIC TRANSFORMER
- Publication number 20140270308
- Publication date Sep 18, 2014
- ROBERT BOSCH GmbH
- Matthew A. Donarski
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
EQUAL EXPANSION RATE SYMMETRIC ACOUSTIC TRANSFORMER
- Publication number 20120033842
- Publication date Feb 9, 2012
- ROBERT BOSCH GmbH
- Matthew A. Donarski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ANNULAR RING ACOUSTIC TRANSFORMER
- Publication number 20120033841
- Publication date Feb 9, 2012
- ROBERT BOSCH GmbH
- Matthew A. Donarski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HEYSER SPIRAL LOW FREQUENCY CORRECTION OF FIR FILTERS
- Publication number 20110317853
- Publication date Dec 29, 2011
- ROBERT BOSCH GmbH
- Matthew A. Donarski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE