Inventor · disambiguated record
Robert A. Gatzen
Also filed as: GATZEN ROBERT · GATZEN ROBERT A
14 granted patents·1 pending application·313 citations·filing 1986–2009
94Inventor score
Files withEVANS PRODUCTS INC2GATZEN ROBERT A2J D ADDARIO & COMPANY INC2ADDARIO & COMPANY INC D1AVEDIS ZILDJIAN CO1
Top patents by PatentIndex Score
15 records- 0196US6291754B1Externally mounted adjustable damping system for drum headJ D ADDARIO & COMPANY INC·Filed 2000·Granted Sep 18, 2001·38 cites·22 claims
- 0294US5159139ADrumhead with overtone suppressionEVANS PRODUCTS INC·Filed 1990·Granted Oct 27, 1992·60 cites·26 claims
- 0391US7214867B1Drumhead tone control deviceJ D ADDARIO & COMPANY INC·Filed 2004·Granted May 8, 2007·25 cites·23 claims
- 0485US6684734B2Pedal assembly for musical instrumentsFiled 2002·Granted Feb 3, 2004·21 cites·20 claims
- 0584US7197957B2Pedal assembly for musical instrumentsGATZEN ROBERT A·Filed 2004·Granted Apr 3, 2007·22 cites·27 claims
- 0681US5864077ADrumheadINNOVATIVE AUTOMATION INC·Filed 1997·Granted Jan 26, 1999·26 cites·10 claims
- 0777US7728211B1Snare drum end plate and strapADDARIO & COMPANY INC D·Filed 2009·Granted Jun 1, 2010·9 cites·18 claims
- 0877US6696630B2Damping device for percussion instrumentsJ D ADDARIO & CO INC·Filed 2002·Granted Feb 24, 2004·15 cites·17 claims
- 0975US4660455AMusical percussion instrument constructionNOBLE & COOLEY CO·Filed 1986·Granted Apr 28, 1987·28 cites·7 claims
- 1066US5107741AMuffler for bass drumsEVANS PRODUCTS INC·Filed 1991·Granted Apr 28, 1992·20 cites·20 claims
- 1159US5744738AFrame structure for musical drumsFiled 1995·Granted Apr 28, 1998·25 cites·19 claims
- 1253US6921854B2Grooved drum body constructionAVEDIS ZILDJIAN CO·Filed 2003·Granted Jul 26, 2005·5 cites·19 claims
- 1353US5404786ADrum mounting arrangementNOBLE AND COOLEY COMPANY INC·Filed 1994·Granted Apr 11, 1995·15 cites·8 claims
- 1450US6875912B2Drum beater with controllable beating capabilityFiled 2003·Granted Apr 5, 2005·4 cites·17 claims
- 1539US2008264233A1Bass drum muteGATZEN ROBERT A·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →