US3245062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic annealing for information storage
Assignee: International Business Machines Corp
•
Filing: 1960-11-15
•
Granted: 1966-04-05
•
Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 Kornei Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:52
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A MAGNETIC RECORD RECEIVING MEMBER COMPRISING A NONMAGNETIC SUBSTRATE, AND A PARTICULATE MASS OF MAGNETIC MATERIAL ADHERED TO SAID SUBSTRATE IN A THIN STRATOSE DISPERSION, THE SAID MAGNETIC MATERIAL BEING IN A MAGNETICALLY ANNEALED STATE WITH THE EASY AXIS OF MAGNETIZATION ORIENTED IN A PREDETERMINED DIRECTION.
Claim 2
Dependent Claim
46 words
A MAGNETIC RECORD RECEIVING MEMBER COMPRISING A NONMAGNETIC SUBSTRATE, AND A PARTICULATE MASS OF MAGNETIC MATERIAL ADHERED TO SAID SUBSTRATE IN A THIN STRATOSE DISPERSION, THE SAID MAGNETIC MATERIAL BEING IN A MAGNETICALLY ANNEALED STATE WITH THE EASY AXIS OF MAGNETIZATION ORIENTED IN A PREDETERMINED DIRECTION.
References Cited (Backward Citations)
US2643130A
Cited
US2869878A
Cited
US2929670A
Cited
US2816053A
Cited
US2915594A
Cited
US2952503A
Cited
US2989595A
Cited
US2793135A
Cited
US2900282A
Cited
US3039891A
Cited
US3031341A
Cited
US2961360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |