US3109749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant magnetic recording media
Assignee: International Business Machines Corp
•
Filing: 1961-12-11
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Granted: 1963-11-05
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Ricco Leo Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/72; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31551; Y10T428/31598; Y10T428/31609; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31688; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN ARTICLE OF MANUFACTURE COMPRISING A SUBSTRATE HAVING ADHERED THERETO, A COATING OF A COMMINUTED PIGMENT IN A VEHICLE SELECTED FROM THE GROUP CONSISTING OF EPOXY RESINS AND POLYURETHANES, AND AN ESSENTIALLY CONTINUOUS SILICON MONOXIDE LAYER, SAID SILICON MONOXIDE LAYER BEING ADHERED TO SAID COATING.
Claim 2
Dependent Claim
45 words
AN ARTICLE OF MANUFACTURE COMPRISING A SUBSTRATE HAVING ADHERED THERETO, A COATING OF A COMMINUTED PIGMENT IN A VEHICLE SELECTED FROM THE GROUP CONSISTING OF EPOXY RESINS AND POLYURETHANES, AND AN ESSENTIALLY CONTINUOUS SILICON MONOXIDE LAYER, SAID SILICON MONOXIDE LAYER BEING ADHERED TO SAID COATING.
References Cited (Backward Citations)
US2978414A
Cited
US2923642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |