US3333141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double layer oxide cathode with reducing agent
Assignee: US Philips Corp
•
Filing: 1965-06-03
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Granted: 1967-07-25
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Mulkens Casper Antoni Henricus
- 👤 Zalm Pieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:47
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/14; H01J1/142; H01J1/20; H01J1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A CATHODE FOR AN ELECTRON DISCHARGE DEVICE COMPRISING A SUPPORT OF A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT, AN OUTER LAYER OF A BARIUM ACTIVATED ALKALINE EARTH METAL OXIDE, AND A LAYER INTERMEDIATE THE OUTER LAYER AND THE SUPPORT AND IN DIRECT CON-
Claim 2
Dependent Claim
47 words
A CATHODE FOR AN ELECTRON DISCHARGE DEVICE COMPRISING A SUPPORT OF A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT, AN OUTER LAYER OF A BARIUM ACTIVATED ALKALINE EARTH METAL OXIDE, AND A LAYER INTERMEDIATE THE OUTER LAYER AND THE SUPPORT AND IN DIRECT CON-
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |