Inventor
William C. Cain
Inventor
San Jose, CA, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer52%
G06FElectric digital data processing26%
B82YSpecific uses or applications of nanostructures11%
H10NElectric solid-state devices not otherwise provided for7%
G01RMeasuring electric variables4%
PatentTitleYear
9,563,397'Disk drive using non-volatile cache when garbage collecting log structured writes'20179,146,875'Hybrid drive converting non-volatile semiconductor memory to read only based on life remaining'20158,825,977'Hybrid drive writing copy of data to disk when non-volatile semiconductor memory nears end of life'20148,639,872'Hybrid drive comprising write cache spanning non-volatile semiconductor memory and disk'20147,302,501'Peripheral data storage system with multi-state user display'20077,302,579'Performing backup operations to peripheral data storage systems'20077,237,054'Switching interfaces in external disk drives'20077,095,585'Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips'20066,535,361'Contact planar magnetoresistive head'20036,493,191'Planar magnetic ring head for contact recording with a rigid disk'20026,320,725'Hard disk drive having ring head with predominantly perpendicular media fields'20016,212,047'Hard disk drive with magnetoresistive head and perpendicular media'20016,198,607'Contact planar magnetoresistive head'20016,008,969'Planar recording head having formed yokes'19995,966,272'Magnetoresistive read head having an exchange layer'19995,617,278'Magnetic head structure with reduction of magnetic domain instability'19975,508,867'Magnetoresistive sensor with flux keepered spin valve configuration'19965,493,467'Yoke spin valve MR read head'19965,438,470'Magnetoresistive structure with contiguous junction hard bias design with low lead resistance'19955,301,079'Current biased magnetoresistive spin valve sensor'19944,800,457'Magnetoresistive sensor element'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Based in West Mifflin, PA, US· patent location history
1994–2003Based in San Jose, CA, US· patent location history
1995–1999Patents assigned to READ RITE CORP (4)· patent assignee history
2001–2003Patents assigned to CENSTOR CORP (5)· patent assignee history
2006–2017Based in Foothill Ranch, CA, US· patent location history
2007–2017Patents assigned to WESTERN DIGITAL TECH INC (7)· patent assignee history
2014–2017Patents assigned to CAIN WILLIAM C (4)· patent assignee history
2014–2015Patents assigned to BOYLE WILLIAM B (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WESTERN DIGITAL TECH INC | 7 | 2007–2017 |
| CENSTOR CORP | 5 | 2001–2003 |
| CAIN WILLIAM Cself | 4 | 2014–2017 |
| READ RITE CORP | 4 | 1995–1999 |
| BOYLE WILLIAM B | 3 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Jose, California, US | 12 | 1994–2003 |
| Foothill Ranch, California, US | 8 | 2006–2017 |
| West Mifflin, Pennsylvania, US | 1 | 1989 |