Inventor
David E. Stevenson
Inventor
Northfield, MN, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C23Cprimary
C23CCoating metallic material26%
H01JElectric discharge tubes or discharge lamps17%
C04BLime, magnesia13%
H01BCables9%
Y10TTechnical subjects covered by former us classification9%
C01BNon-metallic elements4%
G02BOptical elements, systems or apparatus4%
G10GRepresentation of music4%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%
LOC174%
PatentTitleYear
D0743480'Guitar strap'20157,790,060'SiOx:Si composite material compositions and methods of making same'20107,749,406'SiOx:Si sputtering targets and method of making and using such targets'20107,658,822'SiOx:Si composite articles and methods of making same'20105,541,770'Light attenuating anti-reflection coating including electrically conductive layers'19965,421,979'Load-lock drum-type coating apparatus'19955,328,585'Linear planar-magnetron sputtering apparatus with reciprocating magnet-array'19945,200,049'Cantilever mount for rotating cylindrical magnetrons'19935,100,527'Rotating magnetron incorporating a removable cathode'19924,966,062'Guitar support apparatus'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2015Patents assigned to STEVENSON DAVID E (3)· patent assignee history
1990Patents assigned to DRIGGERS ROBERT H (1)· patent assignee history
1990Based in Asheville, NC, US· patent location history
1992–1993Patents assigned to VIRATEC THIN FILMS INC (2)· patent assignee history
1992–1996Based in Northfield, MN, US· patent location history
1994–1996Patents assigned to PHOTRAN CORP (3)· patent assignee history
2010Patents assigned to WINTEK ELECTRO OPTICS CORP (2)· patent assignee history
2010Based in Dexter, MI, US· patent location history
2015Based in Mars Hill, NC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHOTRAN CORP | 3 | 1994–1996 |
| STEVENSON DAVID Eself | 3 | 1990–2015 |
| VIRATEC THIN FILMS INC | 2 | 1992–1993 |
| WINTEK ELECTRO OPTICS CORP | 2 | 2010 |
| DRIGGERS ROBERT H | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Northfield, Minnesota, US | 5 | 1992–1996 |
| Dexter, MI, US | 3 | 2010 |
| Mars Hill, NC, US | 1 | 2015 |
| Asheville, NC, US | 1 | 1990 |