US3179533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape with reinforced backing
Assignee: Individual
•
Filing: 1961-10-04
•
Granted: 1965-04-20
•
Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Rusch Adolphe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/73; G11B5/735; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A MAGNETIC TAPE COMPRISING A BACKING MATERIAL IMPREGNATED AND BONDED WITH A POLYCARBONATE RESIN WHEREIN THE BACKING MATERIAL IS SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CONTINUOUS MULTI-FILAMENT GLASS YARNS AND CONTINUOUS MULTI-FILAMENT SAPONIFIED ACETATE YARNS AND WHERE THE IMPREGNATED BACKING MATERIAL BEARS ON ONE OF ITS SURFACES A MAGNETIC COATING HOMOGENEOUSLY BONDED TO SAID POLYCARBONATE RESIN IMPREGNATED BACKING MATERIAL, SAID MAGNETIC COATING BEING A DISPERSION OF MAGNETIC FERRIC OXIDE POWDER IN POLYCARBONATE RESIN.
Claim 2
Dependent Claim
78 words
A MAGNETIC TAPE COMPRISING A BACKING MATERIAL IMPREGNATED AND BONDED WITH A POLYCARBONATE RESIN WHEREIN THE BACKING MATERIAL IS SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CONTINUOUS MULTI-FILAMENT GLASS YARNS AND CONTINUOUS MULTI-FILAMENT SAPONIFIED ACETATE YARNS AND WHERE THE IMPREGNATED BACKING MATERIAL BEARS ON ONE OF ITS SURFACES A MAGNETIC COATING HOMOGENEOUSLY BONDED TO SAID POLYCARBONATE RESIN IMPREGNATED BACKING MATERIAL, SAID MAGNETIC COATING BEING A DISPERSION OF MAGNETIC FERRIC OXIDE POWDER IN POLYCARBONATE RESIN.
References Cited (Backward Citations)
CA628822A
Cited
US887454A
Cited
GB683505A
Cited
GB717537A
Cited
US2680272A
Cited
DE1035375B
Cited
US2991198A
Cited
US3080342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |