Inventor
David L. Brenholt
Inventor
Menomonie, WI, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Dprimary
B01DSeparation28%
B25JManipulators11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
A01KAnimal husbandry6%
A61MDevices for introducing media into, or onto, the body6%
B62DMotor vehicles6%
B64CAeroplanes6%
F04DNon-positive-displacement pumps6%
F16KValves6%
Y02ATechnologies for adaptation to climate change6%
PatentTitleYear
5,054,721'Vertical takeoff aircraft'19914,869,012'Fishing lure'19894,693,663'Robot with articulated arm'19874,661,039'Flexible-frame robot'19874,484,860'Radial tube centrifugal fan'19844,443,235'Self-cleaning cabinet dust collector'19844,438,781'Spirally wound flow control valve'19844,353,587'Transport vehicle accessory'19824,299,604'Air inducer and backwasher for an air cleaner'19814,265,762'Filter assembly for use in the filtration of medical treatment liquids'19814,214,882'Portable air filter assembly with pulse jet self-cleaning filters'19804,204,846'Self-cleaning air filter'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1987Patents assigned to DONALDSON CO INC (10)· patent assignee history
1980–1984Based in Dundas, MN, US· patent location history
1984–1991Based in Menomonie, WI, US· patent location history
1989–1991Patents assigned to TRANSLAB INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DONALDSON CO INC | 10 | 1980–1987 |
| TRANSLAB INC | 2 | 1989–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Menomonie, WI, US | 6 | 1984–1991 |
| Dundas, Minnesota, US | 6 | 1980–1984 |