Inventor
Roger W. Fowee
Inventor
Wheaton, IL, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification18%
C02FTreatment of water, waste water, sewage, or sludge14%
G01NInvestigating or analysing materials by determining their chemical or physical properties14%
F22BMethods of steam generation9%
B01DSeparation5%
C10KPurifying or modifying the chemical composition of combustible gases containing carbon monoxide5%
C21BManufacture of iron or steel5%
F01DNon-positive displacement machines or engines, e.g. steam turbines5%
F02CGas-turbine plants5%
F22DPreheating, or accumulating preheated, feed-water for steam generation5%
PatentTitleYear
10,626,750Top-pressure recovery turbine deposition control20209,617,173'Method for treatment and reuse of used water streams'20176,587,753'Use of control matrix for boiler control'20036,336,058'Use of control matrix for boiler control'20025,714,387'Tracer technology for dust control'19985,320,967'Boiler system leak detection'19945,236,845'On-line iron (II) concentration monitoring to continuously determine corrosion in boiler systems'19935,041,386'Concentration cycles, percent life holding time and continuous treatment concentration monitoring in boiler systems by inert tracers'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2002Patents assigned to NALCO CHEMICAL CO (5)· patent assignee history
1991–2020Based in Wheaton, IL, US· patent location history
2003Patents assigned to ONDEO NALCO CO (1)· patent assignee history
2017–2020Patents assigned to ECOLAB USA INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NALCO CHEMICAL CO | 5 | 1991–2002 |
| ECOLAB USA INC | 2 | 2017–2020 |
| ONDEO NALCO CO | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wheaton, Illinois, US | 8 | 1991–2020 |