Inventor
Robert Hummell
Inventor
Newport News, VA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Dprimary
B01DSeparation14%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids14%
B05BSpraying apparatus14%
F23JRemoval or treatment of combustion products or combustion residues14%
F28CHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction14%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
6,839,251'Apparatus and method for filtering voltage for an electrostatic precipitator'20056,611,440'Apparatus and method for filtering voltage for an electrostatic precipitator'20035,950,441'Method and apparatus for controlling an evaporative gas conditioning system'19995,890,369'Method for controlling an evaporative gas conditioning system'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2005Patents assigned to BHA GROUP HOLDINGS INC (4)· patent assignee history
1999Based in Yorktown, VA, US· patent location history
2003–2005Based in Newport News, VA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BHA GROUP HOLDINGS INC | 4 | 1999–2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Newport News, Virginia, US | 2 | 2003–2005 |
| Yorktown, Virginia, US | 2 | 1999 |