Magnetic tape abrasivity measurement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Mar 30, 2017
filing date -
Mar 30, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A tape head writer yoke pole tip and a substrate ground plane are electrically coupled to the resistance measuring module. An electrically conductive wear layer is disposed over the pole tip and a ground plane at the tape bearing surface, forming a closed circuit. A magnetic tape is transported across the tape head and wears away the wear layer. The resistance measuring module identifies when the circuit becomes open, and an amount of tape travel until the open circuit occurred, and transmits this to a host computer for determination of a tape abrasivity measure as a function of the amount of tape travel. The write element can be used for write operations while the wear layer is present, and after the wear layer has been worn away.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- G01N Class
- 13595 Applications Filed
- 8906 Patents Issued To-Date
- 65.51 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01N Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 9, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 9, 2029 |