Duncan W. Frew

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Alamo, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of coating a carbon coated magnetic recording medium surface...
- Patent number 5,143,787
- Issue date Sep 1, 1992
- Unisys Corp.
- Duncan W. Frew
- G11 - INFORMATION STORAGE
Information Patent Grant
Anti-spin-off coating for disc records
- Patent number 5,037,710
- Issue date Aug 6, 1991
- Unisys Corp.
- Duncan W. Frew
- G11 - INFORMATION STORAGE
Information Patent Grant
Surface lubricants for disc record
- Patent number 4,797,303
- Issue date Jan 10, 1989
- Unisys Corp.
- Duncan W. Frew
- G11 - INFORMATION STORAGE
Information Patent Grant
Preparation of magnetic coating
- Patent number 4,717,493
- Issue date Jan 5, 1988
- Unisys Corporation
- Duncan W. Frew
- G11 - INFORMATION STORAGE
Information Patent Grant
Method to disperse fine solids without size reduction
- Patent number 4,547,534
- Issue date Oct 15, 1985
- Memorex Corporation
- Leo di Ricco
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Magnetic coating composition
- Patent number 4,419,257
- Issue date Dec 6, 1983
- Memorex Corporation
- Duncan W. Frew
- G11 - INFORMATION STORAGE