Patent US2834001A successfully refreshed from Google Patents.
US3233137A
Expired / Lapsed
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Method and apparatus for cleansing by ionic bombardment
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1961-08-28
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Granted: 1966-02-01
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Gerald S Anderson
- 👤 Roger M Moseson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:04
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/34; B; B08; B08B; B08B7/00; B08B7/0035; C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/35
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
IN APPARATUS HAVING A TRANSPARENT ENVELOPE AND ELECTRODE MEANS FOR PROVIDING AN ELECTRIC GASEOUS DISCHARGE WITHIN THE ENVELOPE WHEREBY DEPOSITS TEND TO COAT A GIVEN AREA OF THE INSIDE SURFACE OF THE ENVELOPE, A TRANSPARENT ELECTRODE ADJACENT THE OUTER SURFACE OF THE ENVELOPE AND APPROXIMATELY OPPOSITE TO SAID GIVEN AREA COATED WITH A DEPOSIT TO BE REMOVED, AND A SOURCE OF RADIO FREQUENCY ALTERNATING POTENTIAL CONNECTED BETWEEN SAID TRANSPARENT ELECTRODE AND SAID ELECTRODE MEANS TO PROVIDE AN ALTERNATING RADIO FREQUENCY ELECTRIC FIELD THEREBETWEEN.
Claim 2
Dependent Claim
83 words
IN APPARATUS HAVING A TRANSPARENT ENVELOPE AND ELECTRODE MEANS FOR PROVIDING AN ELECTRIC GASEOUS DISCHARGE WITHIN THE ENVELOPE WHEREBY DEPOSITS TEND TO COAT A GIVEN AREA OF THE INSIDE SURFACE OF THE ENVELOPE, A TRANSPARENT ELECTRODE ADJACENT THE OUTER SURFACE OF THE ENVELOPE AND APPROXIMATELY OPPOSITE TO SAID GIVEN AREA COATED WITH A DEPOSIT TO BE REMOVED, AND A SOURCE OF RADIO FREQUENCY ALTERNATING POTENTIAL CONNECTED BETWEEN SAID TRANSPARENT ELECTRODE AND SAID ELECTRODE MEANS TO PROVIDE AN ALTERNATING RADIO FREQUENCY ELECTRIC FIELD THEREBETWEEN.
Claim 3
Independent Claim
110 words
THE METHOD OF CLEANING AN APPARATUS INCLUDING A NONCONDUCTING ENVELOPE CONTAINING AN IONIZABLE GAS, SAID APPARATUS ALSO INCLUDING ELECTRODE MEANS FOR ESTABLISHING A GAS DISCHARGE, SAID GAS DISCHARGE INCLUDING IONS OF SAID GAS WITHIN SAID ENVELOPE, SAID GAS DISCHARGE BEING EFFECTIVE TO COAT A SELECTED AREA OF THE INSIDE SURFACE OF SAID ENVELOPE WITH A DEPOSIT, WHICH METHOD COMPRISES: ENERGIZING SAID ELECTRODE MEANS TO PROVIDE SAID GAS DISCHARGE IN SAID ENVELOPE, AND ESTABLISHING A RADIO FREQUENCY ALTERNATING FIELD ACROSS SAID SELECTED AREA TO DEVELOP A RADIO FREQUENCY POTENTIAL ON SAID SELECTED AREA AND BOMBARD SAID SELECTED AREA WITH SAID IONS SO THAT SAID DEPOSIT IS REMOVED FROM SAID SELECTED AREA.
Claim 4
Independent Claim
110 words
THE METHOD OF CLEANING AN APPARATUS INCLUDING A NONCONDUCTING ENVELOPE CONTAINING AN IONIZABLE GAS, SAID APPARATUS ALSO INCLUDING ELECTRODE MEANS FOR ESTABLISHING A GAS DISCHARGE, SAID GAS DISCHARGE INCLUDING IONS OF SAID GAS WITHIN SAID ENVELOPE, SAID GAS DISCHARGE BEING EFFECTIVE TO COAT A SELECTED AREA OF THE INSIDE SURFACE OF SAID ENVELOPE WITH A DEPOSIT, WHICH METHOD COMPRISES: ENERGIZING SAID ELECTRODE MEANS TO PROVIDE SAID GAS DISCHARGE IN SAID ENVELOPE, AND ESTABLISHING A RADIO FREQUENCY ALTERNATING FIELD ACROSS SAID SELECTED AREA TO DEVELOP A RADIO FREQUENCY POTENTIAL ON SAID SELECTED AREA AND BOMBARD SAID SELECTED AREA WITH SAID IONS SO THAT SAID DEPOSIT IS REMOVED FROM SAID SELECTED AREA.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |