US3009828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing controlled low pressure atmospheres
Assignee: Catalyst Research Corp
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Filing: 1960-02-17
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Granted: 1961-11-21
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Expires: 1980-02-17
Abstract
No abstract record available.
Inventors
- 👤 Rogers Maxwell Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:41
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/2496; Y10T137/2499
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
THAT METHOD OF PRODUCING AND MAINTAINING AN ATMOSPHERE AT A PREDETERMINED PRESSURE AND A PREDETERMINED COMPOSITION IN A VACUUM ZONE WHICH COMPRISES DRAWING A VACUUM IN SAID ZONE TO A PRESSURE BELOW THAT DESIRED, WHILE CONTINUOUSLY DRAWING SAID VACUUM HEATING WITHIN SAID ZONE A SOLID THERMALLY DECOMPOSABLECOMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HYDRIDES, ALKALINE EARTH METAL AND ALKALINE EARTH METAL HYDRIDES, ALKALINE EARTH METAL CARBONATES AND ALKALI METAL OXIDES TO A TEMPERATURE SUFFICIENT TO PRODUCE A PRESSURE OF THE NORMALLY GASEOUS
References Cited (Backward Citations)
US2796555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |