Inventor
Calvin Shizuo Nomura
Inventor
San Jose, CA, US
Overview
Patents· 9 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 transducer64%
G01RMeasuring electric variables21%
B82YSpecific uses or applications of nanostructures7%
H03FAmplifiers7%
PatentTitleYear
6,847,500'Methods and apparatus for gradually decreasing supply current demand in arm electronics for write-to-read transitions'20055,969,523'Preamplifier bias mode to re-initialize a GMR head after losing initialization'19995,822,141'High speed FET write driver for an inductive head'19985,774,291'Voltage measurement circuit for a magnetoresistive head installed in a disk enclosure'19985,204,789'Low noise voltage-biasing amplifier for magnetoresistive element'19935,103,353'Low noise amplifier with short circuit protection for signals from magnetoresistive element'19924,879,610'Protective circuit for a magnetoresistive element'19894,786,993'Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor'19884,096,534'Track accessing circuitry for a disk file with switchable filter'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1999Patents assigned to IBM (8)· patent assignee history
1978Based in Rochester, MN, US· patent location history
1988–2005Based in San Jose, CA, US· patent location history
2005Patents assigned to HITACHI GLOBAL STORAGE TECH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 8 | 1978–1999 |
| HITACHI GLOBAL STORAGE TECH | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Jose, California, US | 8 | 1988–2005 |
| Rochester, Minnesota, US | 1 | 1978 |