US3010826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dispenser type cathodes
Assignee: US Philips Corp
•
Filing: 1955-12-14
•
Granted: 1961-11-28
•
Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 Otto G Koppius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042; H01J9/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD OF MAKING A CATHODE OF THE DISPENSER TYPE COMPRISING THE STEPS OF FORMING WITHIN A RETAINING MEMBER A COMPOSITE MASS COMPRISING A PELLET OF ELECTRON MEMBER A COMPOSITION MASS COMPRISING A PELLET OF ELECTRON EMISSIVE ALKALINE EARTH MATERIAL EMBEDDED IN A MASS OF FINELY-DIVIDED REFRACTORY METAL, SUBJECTING THE COMPOSITE MASS TO HIGH PRESSURE TO FORM THE SAME INTO COMPACTED MASS TO HIGH PRESSURE TO FORM THE SAME INTO A COMPACTED MASS IN WHICH THE COMPACTED REFRACTORY MATERIAL HAS A POROUS PORTION BETWEEN THE ELECTRON EMMISSIVE MATERIAL AND POROUS PORTION BETWEEN THE ELECTRON EMISSIVE MATERIAL AND AN EXPOSED SURFACE OF THE MASS AND HEATING THE COMPACTED COMPOSITION MASS WHILE WITHIN THE RETAINER TO CAUSE PACTED COMPOSITE MASS WHILE WITHIN THE RETAINER TO CAUSE THE PARTICLES OF THE REFRACTORY MATERIAL TO ADHERE TO EACH OTHER AND TO THE SURFACE OF THE REATAINER. OTHER AND TO THE SURFACE OF THE RETAINER.
Claim 2
Independent Claim
150 words
A METHOD OF MAKING A CATHODE OF THE DISPENSER TYPE COMPRISING THE STEPS OF FORMING WITHIN A RETAINING MEMBER A COMPOSITE MASS COMPRISING A PELLET OF ELECTRON MEMBER A COMPOSITION MASS COMPRISING A PELLET OF ELECTRON EMISSIVE ALKALINE EARTH MATERIAL EMBEDDED IN A MASS OF FINELY-DIVIDED REFRACTORY METAL, SUBJECTING THE COMPOSITE MASS TO HIGH PRESSURE TO FORM THE SAME INTO COMPACTED MASS TO HIGH PRESSURE TO FORM THE SAME INTO A COMPACTED MASS IN WHICH THE COMPACTED REFRACTORY MATERIAL HAS A POROUS PORTION BETWEEN THE ELECTRON EMMISSIVE MATERIAL AND POROUS PORTION BETWEEN THE ELECTRON EMISSIVE MATERIAL AND AN EXPOSED SURFACE OF THE MASS AND HEATING THE COMPACTED COMPOSITION MASS WHILE WITHIN THE RETAINER TO CAUSE PACTED COMPOSITE MASS WHILE WITHIN THE RETAINER TO CAUSE THE PARTICLES OF THE REFRACTORY MATERIAL TO ADHERE TO EACH OTHER AND TO THE SURFACE OF THE REATAINER. OTHER AND TO THE SURFACE OF THE RETAINER.
References Cited (Backward Citations)
US1390243A
Cited
US1671953A
Cited
US1904568A
Cited
US2121589A
Cited
US2492142A
Cited
US2677873A
Cited
US2543728A
Cited
US2673277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |