Inventor · disambiguated record
Colin B. Campbell
Also filed as: CAMPBELL COLIN B · CAMPBELL COLIN BRUCE
6 granted patents·218 citations·filing 1985–2000
87Inventor score
Top patents by PatentIndex Score
6 records- 0180US4759066ASound system with isolation of dimensional sub-speakersPOLK INVESTMENT CORP·Filed 1987·Granted Jul 19, 1988·42 cites·7 claims
- 0278US6829544B1Line current differential protective relaying method and relay for in-zone tapped transformersGEN ELECTRIC·Filed 2000·Granted Dec 7, 2004·27 cites·16 claims
- 0374US6469629B1Distributed logic in multiple protective relaysGEN ELECTRIC·Filed 1999·Granted Oct 22, 2002·42 cites·18 claims
- 0470US4630298AMethod and apparatus for reproducing sound having a realistic ambient field and acoustic imagePOLK MATTHEW S·Filed 1985·Granted Dec 16, 1986·33 cites·9 claims
- 0564US4638505AOptimized low frequency response of loudspeaker systems having main and sub-speakersPOLK AUDIO INC·Filed 1985·Granted Jan 20, 1987·38 cites·5 claims
- 0661US5517573APorted loudspeaker system and method with reduced air turbulencePOLK INVESTMENT CORP·Filed 1994·Granted May 14, 1996·36 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →