Roger R. Bracht

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Colorado Springs, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Offset for protection against amorphous pips
- Patent number 4,882,721
- Issue date Nov 21, 1989
- Laser Magnetic Storage International Company
- Roger R. Bracht
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens focus initialization system
- Patent number 4,700,056
- Issue date Oct 13, 1987
- Optotech, Inc.
- Dorrel R. Silvy
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for varying laser intensity level
- Patent number 4,695,994
- Issue date Sep 22, 1987
- Laser Magnetic Storage International Company
- Christiaan Steenbergen
- G11 - INFORMATION STORAGE
Information Patent Grant
Single beam direct read during write and write protect system for u...
- Patent number 4,680,594
- Issue date Jul 14, 1987
- Optotech, Inc.
- Roger R. Bracht
- G11 - INFORMATION STORAGE
Information Patent Grant
Write protection and data detection using differential detector
- Patent number 4,606,016
- Issue date Aug 12, 1986
- Optical Storage International
- Johannes J. Verboom
- G11 - INFORMATION STORAGE