John J. Freeman

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Disc drive servo track writer gas leak detector and method
- Patent number 6,819,517
- Issue date Nov 16, 2004
- Seagate Technology LLC
- Louis John Fioravanti
- G11 - INFORMATION STORAGE
Information Patent Grant
Self-synchronizing AC synchronous driver for DC brushless motors
- Patent number 6,570,360
- Issue date May 27, 2003
- Seagate Technology LLC
- John Jay Freeman
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for subjecting a device to rotational vibration
- Patent number 6,330,828
- Issue date Dec 18, 2001
- Seagate Technology LLC
- Alan Thomas Nagl
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for driving a brushless motor
- Patent number 4,922,169
- Issue date May 1, 1990
- MiniScribe Corporation
- John J. Freeman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling a motor
- Patent number 4,622,499
- Issue date Nov 11, 1986
- MiniScribe Corporation
- John P. Squires
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
REDUCED TORQUE RIPPLE SYSTEM
- Publication number 20140333247
- Publication date Nov 13, 2014
- SEAGATE TECHNOLOGY LLC
- John Freeman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Disc drive servo track writer gas leak detector and method
- Publication number 20030026033
- Publication date Feb 6, 2003
- Seagate Technology LLC
- Louis John Fioravanti
- G11 - INFORMATION STORAGE