Patent US3211361A successfully refreshed from Google Patents.
US3211361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a vacuum
Assignee: Air Products and Chemicals Inc
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Filing: 1963-02-07
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Granted: 1965-10-12
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Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 Richard A Flinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:49
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
METHOD OF MAINTAINING A CHAMBER DEFINED BY A VESSEL UNDER LOW VACUUM WHICH COMPRISES THE STEPS OF PUMPING GAS FROM THE CHAMBER TO REDUCE THE PRESSURE WITHIN THE CHAMBER, MOVING A STEAM OF LOOSE SOLID PARTICLES OF POROUS ADSORBENT MATERIAL THROUGH THE CHAMBER TO ADSORB GAS IN THE CHAMBER AND FURTHER REDUCE THE PRESSURE IN THE CHAMBER, THE STREAM OF LOOSE PARTICLES BEING MOVED THROUGH THE CHAMBER FROM ADJACENT A FIRST WALL JKPORTION OF THE VESSEL DEFINING ONE EXTREMITY OF THE CHAMBER TO ADJACENT A SECOND WALL PORTION OF THE VESSEL DEFINING AN OPPOSITE EXTREMITY OF THE CHAMBER ALONG A PATH PLURALLY TRAVERSING INTERMEDIATE WALL KPORTIONS OF THE VESSEL JOINED BETWEEN THE FIRST AND SECOND WALL PORTIONS, REMOVING THE PARTICLES OF ADSORBENT MATERIAL FROM THE CHAMBER AND PASSING THE PARTICLES TO A DESORPTION ZONE, STRIPPING FROM THE PARTICLES IN THE DESORPTION ZONE GAS ADSORBED IN THE CHAMBER, PUMPING GAS FROM THE DESORPTION ZONE,
Claim 2
Dependent Claim
153 words
METHOD OF MAINTAINING A CHAMBER DEFINED BY A VESSEL UNDER LOW VACUUM WHICH COMPRISES THE STEPS OF PUMPING GAS FROM THE CHAMBER TO REDUCE THE PRESSURE WITHIN THE CHAMBER, MOVING A STEAM OF LOOSE SOLID PARTICLES OF POROUS ADSORBENT MATERIAL THROUGH THE CHAMBER TO ADSORB GAS IN THE CHAMBER AND FURTHER REDUCE THE PRESSURE IN THE CHAMBER, THE STREAM OF LOOSE PARTICLES BEING MOVED THROUGH THE CHAMBER FROM ADJACENT A FIRST WALL JKPORTION OF THE VESSEL DEFINING ONE EXTREMITY OF THE CHAMBER TO ADJACENT A SECOND WALL PORTION OF THE VESSEL DEFINING AN OPPOSITE EXTREMITY OF THE CHAMBER ALONG A PATH PLURALLY TRAVERSING INTERMEDIATE WALL KPORTIONS OF THE VESSEL JOINED BETWEEN THE FIRST AND SECOND WALL PORTIONS, REMOVING THE PARTICLES OF ADSORBENT MATERIAL FROM THE CHAMBER AND PASSING THE PARTICLES TO A DESORPTION ZONE, STRIPPING FROM THE PARTICLES IN THE DESORPTION ZONE GAS ADSORBED IN THE CHAMBER, PUMPING GAS FROM THE DESORPTION ZONE,
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |