US2898496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive films and method for producing same
Assignee: Individual
•
Filing: 1953-11-20
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Granted: 1959-08-04
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Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Sr Leland B Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/229; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN IONIZATION DEVICE COMPRISING A RIGID TUBULAR ENVELOPE HAVING AN IMPERVIOUS INNER SURFACE COATED WITH A CLEAR, TRANSPARENT, MOISTURE-FREE, HALOGEN-RESISTANT, ELECTRICALLY CONDUCTIVE FILM OF A FINELY CRYSTALLINE METAL OXIDE, SAID FILM BEING A CATHODE AND OF INIFORM THICKNESS AS SHOWN BY ITS SINGLE REFLECTANCE INTERFERENCE COLOR IN WHITE LIGHT, AN ANODE OF SMALL DIAMETER AND AN IONIZABLE, HALOGEN-CONTAINING GAS FILLING IN SAID ENVELOPE.
Claim 2
Dependent Claim
63 words
AN IONIZATION DEVICE COMPRISING A RIGID TUBULAR ENVELOPE HAVING AN IMPERVIOUS INNER SURFACE COATED WITH A CLEAR, TRANSPARENT, MOISTURE-FREE, HALOGEN-RESISTANT, ELECTRICALLY CONDUCTIVE FILM OF A FINELY CRYSTALLINE METAL OXIDE, SAID FILM BEING A CATHODE AND OF INIFORM THICKNESS AS SHOWN BY ITS SINGLE REFLECTANCE INTERFERENCE COLOR IN WHITE LIGHT, AN ANODE OF SMALL DIAMETER AND AN IONIZABLE, HALOGEN-CONTAINING GAS FILLING IN SAID ENVELOPE.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |