Inventor
James Zweighaft
Inventor
Boulder, CO, US
Overview
Patents· 27 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 transducer73%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
G05BControl or regulating systems in general6%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters6%
F04DNon-positive-displacement pumps3%
H03FAmplifiers3%
PatentTitleYear
7,184,233'Dual source tracking servo systems and associated methods'20077,126,779'Tape media identification code'20066,962,304'Single reel tape cartridge with tape reel centering features'20056,801,383'Method for calibrating a tape media using staggered calibration tracks'20046,775,092'Lateral tape motion sensor'20046,699,013'Forced air cooling fan having pivotal fan blades for unidirectional air flow'20046,665,137'Method for locating data tracks on a tape media'20036,614,611'Method for buckler rotation test'20036,600,624'Guiding method utilizing roller surface features'20036,581,865'Retracting door assembly'20036,570,731'System for detecting an edge of a moving data storage medium'20036,565,029'Method of detecting and correcting for slippage of a tape media in a tape storage device'20036,450,431'Method for preventing a reverse connection failure in a single reel tape drive'20026,320,727'Roller guiding system for delivery of tape media along a tape path'20016,285,518'Life/wear monitoring for magnetic tape'20016,186,430'Tape drive connection sensing assembly'20016,134,072'Tracking of non-native stripes in helical scan tape drive'20005,892,347'Tape drive with high performance gain amplifier using radio frequency dielectric heating'19995,829,702'Method and apparatus for counteracting interlayer slip in magnetic tape drive'19985,726,826'Capstanless helical drive system'19985,712,539'Digital acoustic noise reduction in electric motors driven by switching power amplifiers'19985,680,269'Method and apparatus for controlling media linear speed in a helical scan recorder by reading servo information just after writing the servo information'19975,602,694'Capstanless helical drive system'19975,426,355'Power-off motor deceleration control system'19955,191,491'Method and apparatus for reading distorted helical stripes'19934,885,676'Control loop instability detection and correction apparatus'19894,502,647'Tape attached sensor'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1989Patents assigned to STORAGE TECHNOLOGY CORP (2)· patent assignee history
1985–2007Based in Boulder, CO, US· patent location history
1993–2001Patents assigned to EXABYTE CORP (10)· patent assignee history
2001Patents assigned to BENCHMARK TAPE SYSTEMS CORP (2)· patent assignee history
2002Patents assigned to BENCHMARK STORAGE INNOVATIONS (1)· patent assignee history
2003–2007Patents assigned to QUANTUM CORP (12)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| QUANTUM CORP | 12 | 2003–2007 |
| EXABYTE CORP | 10 | 1993–2001 |
| BENCHMARK TAPE SYSTEMS CORP | 2 | 2001 |
| STORAGE TECHNOLOGY CORP | 2 | 1985–1989 |
| BENCHMARK STORAGE INNOVATIONS | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Boulder, CO, US | 27 | 1985–2007 |