David E. Stevenson

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Northfield, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Light attenuating anti-reflection coating including electrically co...
- Patent number 5,541,770
- Issue date Jul 30, 1996
- Photran Corporation
- Samuel F. Pellicori
- G02 - OPTICS
Information Patent Grant
Load-lock drum-type coating apparatus
- Patent number 5,421,979
- Issue date Jun 6, 1995
- Photran Corporation
- David E. Stevenson
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Linear planar-magnetron sputtering apparatus with reciprocating mag...
- Patent number 5,328,585
- Issue date Jul 12, 1994
- Photran Corporation
- David E. Stevenson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cantilever mount for rotating cylindrical magnetrons
- Patent number 5,200,049
- Issue date Apr 6, 1993
- Viratec Thin Films, Inc.
- David E. Stevenson
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Rotating magnetron incorporating a removable cathode
- Patent number 5,100,527
- Issue date Mar 31, 1992
- Viratec Thin Films, Inc.
- David E. Stevenson
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...