US2835835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion source
Assignee: US Philips Corp
•
Filing: 1955-05-17
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Granted: 1958-05-20
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Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Boutry Georges Albert
- 👤 Pietri Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/22; H01J17/26; H01J27/00; H01J27/02; H01J27/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
AN ION SOURCE COMPRISING AN ENCLOSURE HAVING WALLS AND A SINGLE APERTURE IN A WALL AT ONE END OF SAID ENCLOSURE, AN ION-PRODUCING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE-EARTH METALS DISPOSED WITHIN SAID ENCLOSURE AT AN END REMOTE FROM SAID ONE END, AN ANODE MEMBER MOUNTED WITHIN SAID ENCLOSURE IN PROXIMITY TO BUT SPACED FROM SAID APERTURE AND BETWEEN THE LATTER AND THE ION-PRODUCING SUBSTANCE, MEANS FOR HEATING THE ION-PRODUCING SUBSTANCE TO GENERATE UNIONIZED PARTICLES IN SAID ENCLOSURE, AND MEANS FOR HEATING THE ANODE AT A TEMPERATURE AT WHICH UNIONIZED PARTICLES OF SAID SUBSTANCE IMPINGING THEREON ARE IONIZED, SAID ANODE MEMBER BEING LOCATED IN A POSITION AT WHICH SAID UNIONIZED PARTICLES CANNOT REACH THE APERATURE WITHOUT FIRST IMPINGING ON SAID HEATED ANODE.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |