William A. Challener IV

Person

Little Canada, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Sensor disk having radial grooves and optical assaying method using...
- Patent number 6,653,152
- Issue date Nov 25, 2003
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Optical sensor having dielectric film stack
- Patent number 6,625,336
- Issue date Sep 23, 2003
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Optical sensor having dielectric film stack
- Patent number 6,320,991
- Issue date Nov 20, 2001
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Optical assaying method and system having movable sensor with multi...
- Patent number 6,277,653
- Issue date Aug 21, 2001
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Near normal incidence optical assaying method and system having wav...
- Patent number 6,100,991
- Issue date Aug 8, 2000
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Optical assaying method and system having rotatable sensor disk wit...
- Patent number 5,994,150
- Issue date Nov 30, 1999
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Updatable optical data storage disc having reduced crosstalk betwee...
- Patent number 5,986,997
- Issue date Nov 16, 1999
- Imation Corp.
- William A. Challener
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical sensor having optimized surface profile
- Patent number 5,986,762
- Issue date Nov 16, 1999
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Diffraction anomaly sensor having grating coated with protective di...
- Patent number 5,925,878
- Issue date Jul 20, 1999
- Imation Corp.
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Grant
Achromatic polarization-rotating right-angle prism system
- Patent number 5,751,482
- Issue date May 12, 1998
- Imation Corp.
- William A. Challener
- G02 - OPTICS
Information Patent Grant
Exchange-coupled direct overwrite magneto-optic recording media
- Patent number 5,639,567
- Issue date Jun 17, 1997
- Imation Corp.
- William A. Challener
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optic recording medium having constant reflectance over a r...
- Patent number 5,620,792
- Issue date Apr 15, 1997
- Imation Corp.
- William A. Challener
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for recording on a magneto-optic storage medium having two r...
- Patent number 5,508,982
- Issue date Apr 16, 1996
- Minnesota Mining and Manufacturing Company
- William A. Challener
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optic recording medium having two recording layers, and dri...
- Patent number 5,414,678
- Issue date May 9, 1995
- Minnesota Mining and Manufacturing Company
- William A. Challener
- G11 - INFORMATION STORAGE
Information Patent Grant
Direct-overwrite magneto-optic media
- Patent number 5,087,532
- Issue date Feb 11, 1992
- Minnesota Mining and Manufacturing Company
- William A. Challener
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optical sensor having dielectric film stack
- Publication number 20020018610
- Publication date Feb 14, 2002
- William A. Challener
- G01 - MEASURING TESTING
Information Patent Application
Optical assaying method and system having movable sensor with multi...
- Publication number 20010031503
- Publication date Oct 18, 2001
- William A. Challener
- G01 - MEASURING TESTING

William A. Challener IV

Person

Patents Grantslast 30 patents

Sensor disk having radial grooves and optical assaying method using...

Optical sensor having dielectric film stack

Optical sensor having dielectric film stack

Optical assaying method and system having movable sensor with multi...

Near normal incidence optical assaying method and system having wav...

Optical assaying method and system having rotatable sensor disk wit...

Updatable optical data storage disc having reduced crosstalk betwee...

Optical sensor having optimized surface profile

Diffraction anomaly sensor having grating coated with protective di...

Achromatic polarization-rotating right-angle prism system

Exchange-coupled direct overwrite magneto-optic recording media

Magneto-optic recording medium having constant reflectance over a r...

Method for recording on a magneto-optic storage medium having two r...

Magneto-optic recording medium having two recording layers, and dri...

Direct-overwrite magneto-optic media

Patents Applicationslast 30 patents

Optical sensor having dielectric film stack

Optical assaying method and system having movable sensor with multi...