Patent US2767665A successfully refreshed from Google Patents.
Patent US3134924A successfully refreshed from Google Patents.
US3134924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emissive materials of a metal matrix with molecularly dispersed additives
Assignee: Monsanto Co
•
Filing: 1960-07-05
•
Granted: 1964-05-26
•
Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Courtland M Henderson
- 👤 Robert G Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A GAS DISCHARGE DEVICE COMPRISING AN ENVELOPE, A GAS FILLING WITHIN SAID ENVELOPE, AT LEAST AN ANODE AND CATHODE WITHIN SAID ENVELOPE, THE SAID CATHODE BEING COMPOSED OF NICKEL AS A MATRIX HAVING MOLECULARLY DISPERSED THEREIN THORIUM OXIDE AS A DISCRETE PHASE EXISTING AS NUCLEI WITH THE NUCLEUS-TO-NUCLEUS DISTANCE BETWEEN THE SAID THORIUM OXIDE NUCLEI BEING FROM 10 TO 225 ANGSTROMS, AND WITH THE SAID OXIDE BEING PRESENT IN THE PROPORTION OF FROM 0.25% TO 35% BY VOLUME.
Claim 2
Dependent Claim
78 words
A GAS DISCHARGE DEVICE COMPRISING AN ENVELOPE, A GAS FILLING WITHIN SAID ENVELOPE, AT LEAST AN ANODE AND CATHODE WITHIN SAID ENVELOPE, THE SAID CATHODE BEING COMPOSED OF NICKEL AS A MATRIX HAVING MOLECULARLY DISPERSED THEREIN THORIUM OXIDE AS A DISCRETE PHASE EXISTING AS NUCLEI WITH THE NUCLEUS-TO-NUCLEUS DISTANCE BETWEEN THE SAID THORIUM OXIDE NUCLEI BEING FROM 10 TO 225 ANGSTROMS, AND WITH THE SAID OXIDE BEING PRESENT IN THE PROPORTION OF FROM 0.25% TO 35% BY VOLUME.
Claim 3
Dependent Claim
37 words
A HIGH STRENGTH METALLIC ELECTRODE WHICH COMPRISES A MATRIX OF NICKEL HAVING MOLECULARLY DISPERSED THEREIN PRASEODYMIUM OXIDE WITH THE SAID OXIDE BEING DISTRIBUTED WITHIN THE MATRIX SUCH THAT THE AVERAGE INTER-NUCLEI SPACING IS LESS THAN 225 ANGSTROMS.
Claim 4
Dependent Claim
37 words
A HIGH STRENGTH METALLIC ELECTRODE WHICH COMPRISES A MATRIX OF NICKEL HAVING MOLECULARLY DISPERSED THEREIN PRASEODYMIUM OXIDE WITH THE SAID OXIDE BEING DISTRIBUTED WITHIN THE MATRIX SUCH THAT THE AVERAGE INTER-NUCLEI SPACING IS LESS THAN 225 ANGSTROMS.
References Cited (Backward Citations)
US1244216A
Cited
US2492142A
Cited
US2437576A
Cited
US2473550A
Cited
US2813220A
Cited
US2980819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |