Inventor
Harvey J. Dunstan
Inventor
Wheathampstead, GB
Overview
Patents· 5 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 properties50%
F16KValves13%
G01RMeasuring electric variables13%
H03KPulse technique13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
6,259,242'Apparatus incorporating a sensing conduit in conductive material and method of use thereof for sensing and characterizing particles'20016,175,227'Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle'20014,921,206'Snap-together solenoid operated pinch valve assembly'19904,797,624'Method and apparatus for editing particle produced electrical pulses'19894,041,385'On-line sampling system for monitoring particles suspended in a fluid'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1990Patents assigned to COULTER ELECTRONICS (3)· patent assignee history
1977Based in St. Albans, GB· patent location history
1989–1990Based in Wheathampstead, GB· patent location history
2001Patents assigned to COULTER INT CORP (2)· patent assignee history
2001Based in Herts, GB· patent location history
2001Based in Hitchin, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| COULTER ELECTRONICS | 3 | 1977–1990 |
| COULTER INT CORP | 2 | 2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wheathampstead, GB | 2 | 1989–1990 |
| Herts, GB | 1 | 2001 |
| Hitchin, GB | 1 | 2001 |
| St. Albans, GB | 1 | 1977 |