Patent US2673387A successfully refreshed from Google Patents.
US2673387A
Expired / Lapsed
US
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Electron emission coating mixtures
Assignee: General Electric Co
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Filing: 1951-05-18
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Granted: 1954-03-30
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Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Gordon M Forker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A COATING COMPOSITION FOR COILED-COIL CATHODES AND CONSISTING ESSENTIALLY OF A SUSPENSION, IN PROPORTIONS CORRESPONDING OF A SUSPENSION, AMOUNTS, OF ABOUT 130 TO 260 GRAMS OF FINELY DIVIDED ALKALINE EARTH CARBONATES IN ABOUT 115 TO 145 ML. OF A BINDER OF NITROCELLULOSE DISSOLVED IN ETHYLENE GLYCOL MONOETHYL ETHER ACETATE AND HAVING A VISOCITY IN THE RANGE OF ABOUT 30 TO 100 CENTIPOISES.
Claim 2
Dependent Claim
62 words
A COATING COMPOSITION FOR COILED-COIL CATHODES AND CONSISTING ESSENTIALLY OF A SUSPENSION, IN PROPORTIONS CORRESPONDING OF A SUSPENSION, AMOUNTS, OF ABOUT 130 TO 260 GRAMS OF FINELY DIVIDED ALKALINE EARTH CARBONATES IN ABOUT 115 TO 145 ML. OF A BINDER OF NITROCELLULOSE DISSOLVED IN ETHYLENE GLYCOL MONOETHYL ETHER ACETATE AND HAVING A VISOCITY IN THE RANGE OF ABOUT 30 TO 100 CENTIPOISES.
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) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |