David D. Roberts

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Santa Cruz, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Planar magnetic ring head for contact recording with a rigid disk
- Patent number 6,493,191
- Issue date Dec 10, 2002
- Censtor Corporation
- William C. Cain
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk drive having ring head with predominantly perpendicular m...
- Patent number 6,320,725
- Issue date Nov 20, 2001
- Censtor Corporation
- Alexander P. Payne
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk drive with magnetoresistive head and perpendicular media
- Patent number 6,212,047
- Issue date Apr 3, 2001
- Censtor Corporation
- Alexander P. Payne
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar recording head having formed yokes
- Patent number 6,008,969
- Issue date Dec 28, 1999
- Read-Rite Corporation
- Darren T. Imai
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Hard disk drive for perpendicular recording with transducer having...
- Publication number 20050094315
- Publication date May 5, 2005
- Seagate Technology LLC, a Delaware corporation
- Alexander P. Payne
- G11 - INFORMATION STORAGE
Information Patent Application
Hard disk drive for perpendicular recording with transducer having...
- Publication number 20020093761
- Publication date Jul 18, 2002
- Alexander P. Payne
- G11 - INFORMATION STORAGE