Patent US3196570A successfully refreshed from Google Patents.
US3215554A
Expired / Lapsed
US
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Subbing layer for magnetic recording materials
Assignee: Gevert Photo Producten N V
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Filing: 1963-01-21
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Granted: 1965-11-02
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Loots Francois Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:01
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7023; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A MAGNETIC RECORDING MATERIAL COMPRISING A SUPPORT SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE ESTES, A MAGNETIC RECORDING LAYER CONSISTING ESSENTIALLY OF FINELY DIVIDED MAGNETIC PARTICLES IN A HYDROPHOBIC SYNTHETIC RESINOUS BINDER, AND A SUBBING LAYER FOR ADHERING SAID RECORDING LAYER TO SAID SUPPORT, SAID SUBBING LAYER CONSISTING ESSENTIALLY OF VINYLIDENE CHLORIDE-ACRYLONITRILE COPOLYMER HAVING ABOUT 81-98% VINYLIDENE CHLORIDE UNITS.
Claim 2
Dependent Claim
61 words
A MAGNETIC RECORDING MATERIAL COMPRISING A SUPPORT SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE ESTES, A MAGNETIC RECORDING LAYER CONSISTING ESSENTIALLY OF FINELY DIVIDED MAGNETIC PARTICLES IN A HYDROPHOBIC SYNTHETIC RESINOUS BINDER, AND A SUBBING LAYER FOR ADHERING SAID RECORDING LAYER TO SAID SUPPORT, SAID SUBBING LAYER CONSISTING ESSENTIALLY OF VINYLIDENE CHLORIDE-ACRYLONITRILE COPOLYMER HAVING ABOUT 81-98% VINYLIDENE CHLORIDE UNITS.
Claim 3
Dependent Claim
92 words
A MAGNETIC RECORDING MATERIAL COMPRISING A SUPPORT SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE ESTERS, A PIGMENT LAYER CONSISTING ESSENTIALLY OF NON-MAGNETIC FINELY DIVIDED INORGANIC PIGMENT IN A HYDROPHOBIC SYNTHETIC RESINOUS BINDER, A SUBBING LAYER FOR ADHERING SAID PIGMENT LAYER TO ONE SIDE OF SAID SUPPORT, AND A MAGNETIC RECORDING LAYER ON THE OTHER SIDE OF SAID SUPPORT, SAID MAGNETIC RECORDING LAYER CONSISTING ESSENTIALLY OF FINELY DIVIDED MAGNETIC PARTICLES IN A HYDROPHOBIC RESIN BINDER, SAID SUBBDING LAYER CONSISTING ESSENTIALLY OF A VINYLIDENE CHLORIDE-ACRYLONITRILE COPOLYMER HAVING ABOUT 81-98% VINYLIDENE CHLORIDE UNITS.
Claim 4
Dependent Claim
92 words
A MAGNETIC RECORDING MATERIAL COMPRISING A SUPPORT SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE ESTERS, A PIGMENT LAYER CONSISTING ESSENTIALLY OF NON-MAGNETIC FINELY DIVIDED INORGANIC PIGMENT IN A HYDROPHOBIC SYNTHETIC RESINOUS BINDER, A SUBBING LAYER FOR ADHERING SAID PIGMENT LAYER TO ONE SIDE OF SAID SUPPORT, AND A MAGNETIC RECORDING LAYER ON THE OTHER SIDE OF SAID SUPPORT, SAID MAGNETIC RECORDING LAYER CONSISTING ESSENTIALLY OF FINELY DIVIDED MAGNETIC PARTICLES IN A HYDROPHOBIC RESIN BINDER, SAID SUBBDING LAYER CONSISTING ESSENTIALLY OF A VINYLIDENE CHLORIDE-ACRYLONITRILE COPOLYMER HAVING ABOUT 81-98% VINYLIDENE CHLORIDE UNITS.
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |