WJ

William D. Johns

WT Western Digital Technologies: 5 patents #645 of 3,180Top 25%
HB Hgst Netherlands, B.V.: 1 patents #510 of 972Top 55%
Overall (All Time): #701,160 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11555331 Barrier control system 2023-01-17
8760779 Energy-assisted magnetic recording head and systems thereof with environmental conditions control David L. Whitaker, Ikuya Tagawa, Yoshihiro Shiroishi 2014-06-24
7035026 Method of manufacturing and disk drive produced by measuring the read and write widths and varying the track pitch in the servo-writer Raffi Codilian, Charles A. Park, David D. Nguyen, Jack M. Chue 2006-04-25
6885514 Method of manufacturing and disk drive produced by measuring the read and write widths and varying the track pitch in the servo-writer Raffi Codilian, Charles A. Park, David D. Nguyen, Jack M. Chue 2005-04-26
6791782 Method and apparatus for determining operational spindle rotation rate in a disk drive Raffi Codilian, Joseph M. Viglione 2004-09-14
6788480 Method and apparatus for determining track density during a servo-track writing operation Raffi Codilian 2004-09-07
6714372 Method of manufacturing a disk drive by measuring the read width in the servo-writer to set the write unsafe limit Raffi Codilian 2004-03-30