CHANG, CHING-RAY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1137

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9625537 Magnetic field sensing device and methodNov 29, 14Apr 18, 17[G01R]
7993766 Perpendicular magnetic recording medium and method for fabricating the sameMar 25, 08Aug 09, 11[G11B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0171,494 DISCONTINUOUS ISLANDED FERROMAGNETIC RECORDING FILM WITH PERPENDICULAR MAGNETIC ANISOTROPYAbandonedApr 05, 10Jul 14, 11[G11B]
2011/0104,517 SINGLE-LAYERED FERROMAGNETIC RECORDING FILM WITH PERPENDICULAR MAGNETIC ANISOTROPYAbandonedMar 23, 10May 05, 11[G11B]
2006/0280,973 Tunable magnetic recording medium and its fabricating methodAbandonedJan 19, 06Dec 14, 06[C23C, G11B]
2006/0021,871 Method for fabricating L10 phase alloy filmAbandonedJul 29, 04Feb 02, 06[C23C]

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