Inventor · disambiguated record
Douglas Campbell
Also filed as: CAMPBELL DOUGLAS · CAMPBELL DOUGLAS C · CAMPBELL DOUGLAS R · CAMPBELL DOUGLAS REID BOYD
7 granted patents·2 pending applications·66 citations·filing 1980–2022
83Inventor score
Files withDOLBY LABORATORIES LICENSING CORP2ADAMSON SYSTEMS ENG INC1ADVANCED CATALYST SYSTEMS LLC1BASF CORP1IMAGING SYSTEMS CORP1
Top patents by PatentIndex Score
9 records- 0185US7573891B1Hybrid fiber/conductor integrated communication networksOPTIMAL INNOVATIONS INC·Filed 2002·Granted Aug 11, 2009·40 cites·47 claims
- 0279US9645386B2Calibration and control of displays incorporating MEMS light modulatorsDOLBY LABORATORIES LICENSING CORP·Filed 2012·Granted May 9, 2017·4 cites·42 claims
- 0362US6610133B2Dispersions for use in ink jet inksBASF CORP·Filed 2000·Granted Aug 26, 2003·6 cites·27 claims
- 0451US2025004357A1Light projection system using white light illuminationDOLBY LABORATORIES LICENSING CORP·Filed 2022·Application pending·0 cites
- 0550US9706289B2Loudspeaker with improved directional behavior and reduction of acoustical interferenceADAMSON SYSTEMS ENG INC·Filed 2015·Granted Jul 11, 2017·1 cites·21 claims
- 0649US6805115B2Catalytic embers for use with a gas fired log setADVANCED CATALYST SYSTEMS LLC·Filed 2002·Granted Oct 19, 2004·5 cites·16 claims
- 0749US2005204012A1Preventing acceptance of undesired electronic messages (spam)Filed 2005·Application pending·0 cites
- 0836US4559014AMotion limiting systemsREDIFFUSION SIMULATION LTD·Filed 1983·Granted Dec 17, 1985·6 cites·7 claims
- 0932US4342824ADeveloper with coated carrier material and method of makingIMAGING SYSTEMS CORP·Filed 1980·Granted Aug 3, 1982·4 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →