US3292164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating product
Assignee: Bunker Ramo Corp
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Filing: 1963-03-11
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Granted: 1966-12-13
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Paul E Wells
- 👤 John S Davis
- 👤 Ronald E Lee
- 👤 David R Boles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:04
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F41/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/4902; Y10T29/49069; Y10T29/49117; Y10T29/49204; Y10T29/49224
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
AN IMPROVED MAGNETIC MEMORY PLANE COMPRISING: A WIRE SCREEN AND A MAGNETIC PLATING DEPOSITED THEREON, SAID MAGNETIC PLATING INCLUDING METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, NICKEL AND MIXTURES THEREOF, SAID MAGNETIC PLATING HAVING A THICKNESS OF BETWEEN ABOUT 60 AND 100 MICROINCHES, SUBSTANTIALLY SQUARE BULK HYSTERESIS LOOP AND COERCIVITY OF AT LEAST ABOUT 1.8 OERSTEDS, THE WIRES OF SAID WIRE SCREEN HAVING SUFFICIENTLY SMALL RADII OF CURVATURE SUCH THAT THE CRYSTALS OF SAID MAGNETIC PLATING ARE MAGNETICALLY ORIENTED THEREBY, AND SAID WIRES BEING WOVEN IN A CONFIGURATION PROVIDING A PLURALITY OF CLOSED LOOPS TO FACILITATE THE MAGNETIC ORIENTATION OF THE MAGNETIC PLATING AROUND THE INDIVIDUAL LOOPS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |