US3293066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed antistatic magnetic member
Assignee: International Business Machines Corp
•
Filing: 1962-12-19
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Granted: 1966-12-20
•
Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert S Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; G; G11; G11B; G11B5/00; G11B5/62; G11B5/73; G11B5/735; G11B5/7356; H05; H05F; H05F1/00; H05F1/02; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S428/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A MAGNETIC RECORD MEMBER COMPRISING: A FLEXIBLE NONMAGNETIC SUPPORT HAVING TWO FACES; A MAGNETIC LAYER COVERING ONE FACE OF THE SUPPORT; AND A WEAR RESISTANT ANTISTATIC COATING HAVING GOOD FRICTIONAL CHARACTERISTICS ADHERENTLY BONDED TO THE SECOND FACE OF THE SUPPORT, SAID ANTISTATIC COATING CONSISTING ESSENTIALLY OF PARTICLES OF SILICA AEROGEL AND COLLOIDAL SIZED PARTICLES OF CARBON
Claim 2
Dependent Claim
56 words
A MAGNETIC RECORD MEMBER COMPRISING: A FLEXIBLE NONMAGNETIC SUPPORT HAVING TWO FACES; A MAGNETIC LAYER COVERING ONE FACE OF THE SUPPORT; AND A WEAR RESISTANT ANTISTATIC COATING HAVING GOOD FRICTIONAL CHARACTERISTICS ADHERENTLY BONDED TO THE SECOND FACE OF THE SUPPORT, SAID ANTISTATIC COATING CONSISTING ESSENTIALLY OF PARTICLES OF SILICA AEROGEL AND COLLOIDAL SIZED PARTICLES OF CARBON
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |