Inventor
Robert K. Stevens
Inventor
Raleigh, NC, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties38%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry23%
Y10TTechnical subjects covered by former us classification23%
G01FMeasuring volume, volume flow, mass flow or liquid level15%
PatentTitleYear
8,019,559'Sonic flow meter and method'20117,130,750'Flow meter with magnetoresistive sensors and method of measuring flow'20066,780,818'Quantitative organic vapor-particle sampler'20046,226,852'Method for fabricating a quantitative integrated diffusion vapor-particle sampler for sampling, detection and quantitation of semi-volatile organic gases, vapors and particulate components'20015,763,360'Quantitative organic vapor-particle sampler'19984,961,966'Fluorocarbon coating method'19904,902,318'Inlet apparatus for gas-aerosol sampling'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990Patents assigned to US ENVIRONMENT (2)· patent assignee history
1990–2004Based in Raleigh, NC, US· patent location history
1998–2004Patents assigned to UNIV CALIFORNIA (3)· patent assignee history
1998Based in Cary, NC, US· patent location history
2006–2011Patents assigned to RACINE FEDERATED (2)· patent assignee history
2006–2011Based in Racine, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV CALIFORNIA | 3 | 1998–2004 |
| RACINE FEDERATED | 2 | 2006–2011 |
| US ENVIRONMENT | 2 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Raleigh, NC, US | 4 | 1990–2004 |
| Racine, WI, US | 2 | 2006–2011 |
| Cary, NC, US | 1 | 1998 |