Inventor
Darryl M. Nielsen
Inventor
Lenexa, KS, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Dprimary
F04DNon-positive-displacement pumps16%
F04BPositive-displacement machines for liquids11%
Y10TTechnical subjects covered by former us classification11%
B67DDispensing, delivering or transferring liquids, not otherwise provided for5%
C22CAlloys5%
E03FSewers5%
E21BEarth or rock drilling5%
F04FPumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped5%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants5%
F16KValves5%
PatentTitleYear
11,008,818Coupling for rods20215,088,896'Jet pump with rotatable venturi cartridge'19924,806,083'Submersible pump with expanded foam housing'19894,780,953'Method of assembling a submersible electric motor'19884,709,124'Watertight electrical connector'19874,687,023'Ball check valve'19874,684,331'Vaned slinger for pumps'19874,680,437'Adjustable float assembly for pumps'19874,679,991'Submersible pump and wastewater basin apparatus'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1989Patents assigned to MARLEY WYLAIN CO (7)· patent assignee history
1987–1992Based in Lenexa, KS, US· patent location history
1992Patents assigned to MARLEY CO (1)· patent assignee history
2021Patents assigned to MATERION CORP (1)· patent assignee history
2021Based in Kingwood, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MARLEY WYLAIN CO | 7 | 1987–1989 |
| MARLEY CO | 1 | 1992 |
| MATERION CORP | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lenexa, KS, US | 8 | 1987–1992 |
| Kingwood, Texas, US | 1 | 2021 |