Inventor
John L. Schaefer
Inventor
Alexandria, VA, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOCD0primary
LOCD050%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids42%
B04CApparatus using free vortex flow, e.g. cyclones8%
PatentTitleYear
6,498,313'Electrostatic particle separation system, apparatus, and related method'20026,323,451'Particle separation system using parallel multistage electrostatic separators'20015,944,875'Triboelectric separator with mixing chamber and pre-separator'19995,938,041'Apparatus and method for triboelectrostatic separation'19995,755,333'Method and apparatus for triboelectric-centrifugal separation'1998D0256185'Face plate for a belt buckle'1980D0256186'Face plate for a belt buckle'1980D0256068'Face place for a belt buckle'1980D0251225'Drinking mug'1979D0251226'Drinking mug'1979D0250444'Drinking mug'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1980Patents assigned to SALLET INC (6)· patent assignee history
1978–1980Based in Alexandria, VA, US· patent location history
1998–2002Patents assigned to UNIV KENTUCKY RES FOUND (5)· patent assignee history
1998–2002Based in Lexington, KY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SALLET INC | 6 | 1978–1980 |
| UNIV KENTUCKY RES FOUND | 5 | 1998–2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Alexandria, Virginia, US | 6 | 1978–1980 |
| Lexington, KY, US | 5 | 1998–2002 |