US2881343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron multipliers
Assignee: RCA Corp
•
Filing: 1957-04-16
•
Granted: 1959-04-07
•
Expires: 1977-04-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Polkosky
- 👤 August M Splinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:52
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/32; H01J9/00; H01J9/02; H01J9/12; H01J9/125; H01J2201/00; H01J2201/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
AN ELECTRON MULTIPLIER ELECTRODE COMPRISING A BASE OF NICKEL, A COATING OF NICKEL OXIDE ON SAID BASE, AND ANTIMONY AND AN ALKALI METAL PRESENT ON SAID NICKEL OXIDE COATING.
Claim 2
Dependent Claim
29 words
AN ELECTRON MULTIPLIER ELECTRODE COMPRISING A BASE OF NICKEL, A COATING OF NICKEL OXIDE ON SAID BASE, AND ANTIMONY AND AN ALKALI METAL PRESENT ON SAID NICKEL OXIDE COATING.
References Cited (Backward Citations)
US2620287A
Cited
DK58988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |