Inventor · disambiguated record
Douglas F. Royer
Also filed as: ROYER DOUGLAS · ROYER DOUGLAS E · ROYER DOUGLAS F · ROYER DOUGLAS FORD
4 granted patents·4 pending applications·2 citations·filing 2004–2023
59Inventor score
Top patents by PatentIndex Score
8 records- 0157US11719645B2Reducing agent for arsenic measurementHACH CO·Filed 2021·Granted Aug 8, 2023·0 cites·19 claims
- 0257US2024230609A1Potassium maleate buffer for free chlorine analysisHACH CO·Filed 2023·Application pending·0 cites
- 0354US2024219309A1Stabilized n,n-diethyl-p-phenylenediamine solution and method for detecting chlorineHACH CO·Filed 2022·Application pending·0 cites
- 0448US8603410B2Chromium-free indicating deviceROYER DOUGLAS F·Filed 2012·Granted Dec 10, 2013·0 cites·22 claims
- 0548US8231841B2Chromium-free indicating device for chloride detectionROYER DOUGLAS F·Filed 2010·Granted Jul 31, 2012·2 cites·21 claims
- 0647US10006853B2Vial and cap for turbidity standardHACH CO·Filed 2017·Granted Jun 26, 2018·0 cites·17 claims
- 0741US2005196319A1System and method for providing a reaction surface of a predetermined area for a limited volumeHACH CO·Filed 2004·Application pending·0 cites
- 0840US2007131113A1Transporting apparatusGADBURY TODD C·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →