Patent US2985548A successfully refreshed from Google Patents.
US2985548A
Expired / Lapsed
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Method of making a low density coating for an electron discharge device
Assignee: GTE Sylvania Inc
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Filing: 1957-12-26
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Granted: 1961-05-23
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Blickwedel
- 👤 Robert L Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:29
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METHOD OF FORMING A LOW DENSITY CATHODE FOR AN ELECTRON DISCHARGE DEVICE COMPRISING THE STEPS OF DEPOSITING UPON A METALLIC BASE MEMBER A LAYER OF A COMPOSITION INCLUDING AN ALKALINE EARTH METAL SALT, AN ORGANIC BINDER AND AN INORGANIC COMPOUND INSOLUBLE IN SAID BINDER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM BICARBONATE, AMMONIUM CARBOMATE, AMMONIUM ACID CARBONATE, AMMONIUM ACETATE AND AMMONIUM FORMATE, AND HEATING SAID COMPOSITION UNDER 300*C. TO SUBSTANTIALLY DECOMPOSE SAID COMPOUND.
Claim 2
Independent Claim
74 words
A METHOD OF FORMING A LOW DENSITY CATHODE FOR AN ELECTRON DISCHARGE DEVICE COMPRISING THE STEPS OF DEPOSITING UPON A METALLIC BASE MEMBER A LAYER OF A COMPOSITION INCLUDING AN ALKALINE EARTH METAL SALT, AN ORGANIC BINDER AND AN INORGANIC COMPOUND INSOLUBLE IN SAID BINDER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM BICARBONATE, AMMONIUM CARBOMATE, AMMONIUM ACID CARBONATE, AMMONIUM ACETATE AND AMMONIUM FORMATE, AND HEATING SAID COMPOSITION UNDER 300*C. TO SUBSTANTIALLY DECOMPOSE SAID COMPOUND.
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |