US2936388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counters with a negative-ion-forming vapor additive
Assignee: Individual
•
Filing: 1958-12-15
•
Granted: 1960-05-10
•
Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Talbot A Chubb
- 👤 Jr James E Kupperian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A COUNTER TUBE CHARACTERIZED BY THE SUPPRESSION OF PHOTOELECTRONS FROM THE CATHODE COMPRISING A RADIATION PERMEABLE ENVELOPE, A GASEOUS FILLING THEREIN CONSISTING OF AN INERT GAS, A QUENCHING MEDIUM AND SULFUR HEXAFLUORIDE, PLUS MEANS FOR PRODUCING A UNDIRECTIONAL ELECTRIC FIELD ACROSS SAID GASEOUS FILLING.
Claim 2
Dependent Claim
44 words
A COUNTER TUBE CHARACTERIZED BY THE SUPPRESSION OF PHOTOELECTRONS FROM THE CATHODE COMPRISING A RADIATION PERMEABLE ENVELOPE, A GASEOUS FILLING THEREIN CONSISTING OF AN INERT GAS, A QUENCHING MEDIUM AND SULFUR HEXAFLUORIDE, PLUS MEANS FOR PRODUCING A UNDIRECTIONAL ELECTRIC FIELD ACROSS SAID GASEOUS FILLING.
References Cited (Backward Citations)
US2612615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |