Debra M. Steffenhagen

Person

Faribault, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for thin film coating an article
- Patent number 6,068,738
- Issue date May 30, 2000
- Erik J. Bjornard
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method and apparatus for thin film coating an article
- Patent number 5,688,389
- Issue date Nov 18, 1997
- Viratec Thin Films, Inc.
- Erik J. Bjornard
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method and apparatus for thin film coating an article
- Patent number 5,620,572
- Issue date Apr 15, 1997
- Viratec Thin Films, Inc.
- Erik J. Bjornard
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method and apparatus for thin film coating an article
- Patent number 5,489,369
- Issue date Feb 6, 1996
- Viratec Thin Films, Inc.
- Erik J. Bjornard
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Four-layer antireflection coating for deposition in in-like DC sput...
- Patent number 5,450,238
- Issue date Sep 12, 1995
- Viratec Thin Films, Inc.
- Erik J. Bjornard
- G02 - OPTICS
Information Patent Grant
Electrically-conductive, light-attenuating antireflection coating
- Patent number 5,407,733
- Issue date Apr 18, 1995
- Viratec Thin Films, Inc.
- Erik J. Bjornard
- G02 - OPTICS
Information Patent Grant
DC reactively sputtered optical coatings including niobium oxide
- Patent number 5,372,874
- Issue date Dec 13, 1994
- Viratec Thin Films, Inc.
- Eric R. Dickey
- G02 - OPTICS

Debra M. Steffenhagen

Person

Patents Grantslast 30 patents

Method and apparatus for thin film coating an article

Method and apparatus for thin film coating an article

Method and apparatus for thin film coating an article

Method and apparatus for thin film coating an article

Four-layer antireflection coating for deposition in in-like DC sput...

Electrically-conductive, light-attenuating antireflection coating

DC reactively sputtered optical coatings including niobium oxide