Inventor
David L. Henderson
Inventor
Millbrook, AL, US
Overview
Patents· 30 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F24Hprimary
F24HFluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general17%
Y10TTechnical subjects covered by former us classification14%
B27CPlaning, drilling, milling, turning or universal machines for wood or similar material5%
G06FElectric digital data processing5%
G06TImage data processing or generation, in general5%
H02KDynamo-electric machines5%
B23BTurning3%
G02BOptical elements, systems or apparatus3%
G06JHybrid computing arrangements3%
G06VImage or video recognition or understanding3%
PatentTitleYear
9,891,804'Selection and display of biomarker expressions'20188,878,923'System and method for enhanced predictive autofocusing'20148,396,269'Image quality assessment including comparison of overlapped margins'20138,314,837'System and method for imaging with enhanced depth of field'20127,506,877'Bit or tool extension and method of making same'20097,172,377'Router or cutter bit chuck or extension'20077,027,723'Water heater electrical enclosure insert/foam dam'20066,917,756'Water heater electrical enclosure insert/foam dam'20056,898,375'Water heater electrical enclosure insert/foam dam'20056,885,816'Water heater apparatus and associated manufacturing and insulation methods'20056,792,469'System and method for monitoring and controlling the production of audio and video streams'20046,745,723'Water heater heat trap apparatus'20046,588,378'Water heater bottom pad/foam dam apparatus with integrated tank support members'20036,587,862'Apparatus and method for direct digital frequency synthesis'20036,557,019'Apparatus and method for compact Haar transform'20036,520,227'Apparatus and method for mounting routers in tables'20036,318,936'Plunge router adjustment mechanism and method'20016,271,505'Field conversion electric water heater'20016,239,512'Electric water heater with simplified phase conversion apparatus'20016,240,249'Electric water heater with simplified phase conversion apparatus'20016,231,253'Label printer with a peel bar, a separator bar and anti-buckle means'20016,079,959'Reciprocating pump'20005,954,265'Diagnostic system for a fuel-fired water heater'19994,920,344'Digitally compensated multiplying digital to analog converter'19904,893,116'Logical drawing and transparency circuits for bit mapped video display controllers'19904,779,029'Digitally compensated multiplying digital to analog converter'19884,317,273'Method of making high coupling ratio DMOS electrically programmable ROM'19824,214,921'Method of manufacturing a corrosion resistant rotor assembly'19804,113,518'Method of manufacturing a corrosion resistant rotor assembly'19783,953,275'Method and apparatus for liquid adhesive application'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1980Patents assigned to EMERSON ELECTRIC CO (3)· patent assignee history
1976–1980Based in O'Fallon, MO, US· patent location history
1982–1990Based in Colorado Springs, CO, US· patent location history
1988–1990Patents assigned to NCR CO (3)· patent assignee history
1999–2006Patents assigned to RHEEM MFG CO (10)· patent assignee history
1999–2006Based in Millbrook, AL, US· patent location history
2001–2009Based in Berwick, IA, US· patent location history
2004–2014Patents assigned to GEN ELECTRIC (3)· patent assignee history
2004–2014Based in Clifton Park, NY, US· patent location history
2007–2013Patents assigned to HENDERSON DAVID L (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RHEEM MFG CO | 10 | 1999–2006 |
| EMERSON ELECTRIC CO | 3 | 1976–1980 |
| GEN ELECTRIC | 3 | 2004–2014 |
| HENDERSON DAVID Lself | 3 | 2007–2013 |
| NCR CO | 3 | 1988–1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Millbrook, AL, US | 10 | 1999–2006 |
| Clifton Park, New York, US | 4 | 2004–2014 |
| Berwick, IA, US | 4 | 2001–2009 |
| Colorado Springs, CO, US | 3 | 1982–1990 |
| O'Fallon, MO, US | 3 | 1976–1980 |