US2880181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder for conductive metallic film
Assignee: Unisys Corp
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Filing: 1956-11-02
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Granted: 1959-03-31
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Expires: 1976-11-02
Abstract
No abstract record available.
Inventors
- 👤 Warren D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
H; H01; H01P; H01P11/00; H01B; H01B1/00; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A METALLIC SUSPENSION FOR PROVIDING A FILM CONDUCTIVE TO MICROWAVES ON THE SURFACE OF A PLASTIC STRUCTURE, COMPRISING SILVER FLAKES HAVING A THICKNESS IN THE RANGE OF 15-150 MILLIMICRONS AND A MAXIMUM FLAT SURFACE DIMENSION IN THE RANGE OF 0.2-30 MICRONS SUSPENDED IN A VEHICLE HAVING A SOLIDS CONTENT IN THE RANGE OF 3-25% OF SAID VEHICLE AND COMPRISING 10-30% SECONDARY BINDER, 1.5% PLASTICIZER, AND THE REMAINDER PRIMARY BINDER, SAID PRIMARY BINDER BEING SUBSTANTIALLY A 13% SOLUTION OF NITROCELLULOSE IN EQUAL PARTS OF ETHYL ALCOHOL AND ETHYL ACETATE, SAID SECONDARY BINDER BEING SUBSTANTIALLY A 20% SOLUTION OF CELLULOSE ACETATE BUTYRATE IN EQUAL PARTS OF METHYL ETHYL KETONE AND TOLUENE, SAID PLASTICIZER BEING DIOCTYL PHTHALATE, AND ALL OF SAID PERCENTAGES BEING EXPRESSED AS PARTS BY WEIGHT.
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |