Patent US2812244A successfully refreshed from Google Patents.
US2812244A
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Apparatus for contacting solids with gaseous fluids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-09-01
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Granted: 1957-11-05
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Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Bruno E Roetheli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/924; Y10S585/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
APPARATUS FOR CONTACTING GASEOUS FLUIDS WITH SUBDIVIDED SOLIDS USING LARGE AMOUNTS OF SOLIDS AND SHORT CONTACT TIMES, WHICH COMPRISES A VERTICAL SUBSTANTIALLY
Claim 2
Dependent Claim
22 words
APPARATUS FOR CONTACTING GASEOUS FLUIDS WITH SUBDIVIDED SOLIDS USING LARGE AMOUNTS OF SOLIDS AND SHORT CONTACT TIMES, WHICH COMPRISES A VERTICAL SUBSTANTIALLY
References Cited (Backward Citations)
US2515155A
Cited
US2488406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |