US2799609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducing webs and method of manufacture
Assignee: Individual
•
Filing: 1955-01-24
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Granted: 1957-07-16
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Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harold R Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF MAKING A MAGNETIC SIGNAL-TRANSDUCING WEB WHICH IS SMOOTH-SURFACED ON ITS OPPOSITE FACES, WHICH FACES ARE FREE FROM PIGMENT GRAININESS, WHICH COMPRISES, APPLYING TO A SUBSTANTIALLY NON-POROUS SMOOTH-SURFACED CARRIER A MIXTURE OF A FILM-FORMING RESIN WITH A MAGNETIC PIGMENT, DRYING SAID MIXTURE ON SAID CARRIER, APPLYING TO SAID DRIED MIXTURE A LAYER OF PLASTIC TO FORM WITH THE DRIED LAYER A UNITARY COMPOSITE WEB, AND THEN STRIPPING SAID COMPOSITE WEB FROM SAID CARRIER.
Claim 2
Independent Claim
75 words
THE METHOD OF MAKING A MAGNETIC SIGNAL-TRANSDUCING WEB WHICH IS SMOOTH-SURFACED ON ITS OPPOSITE FACES, WHICH FACES ARE FREE FROM PIGMENT GRAININESS, WHICH COMPRISES, APPLYING TO A SUBSTANTIALLY NON-POROUS SMOOTH-SURFACED CARRIER A MIXTURE OF A FILM-FORMING RESIN WITH A MAGNETIC PIGMENT, DRYING SAID MIXTURE ON SAID CARRIER, APPLYING TO SAID DRIED MIXTURE A LAYER OF PLASTIC TO FORM WITH THE DRIED LAYER A UNITARY COMPOSITE WEB, AND THEN STRIPPING SAID COMPOSITE WEB FROM SAID CARRIER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |