US2674338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the recovery of nitrogen oxides from gaseous mixtures
Assignee: FMC Corp
•
Filing: 1949-12-02
•
Granted: 1954-04-06
•
Expires: 1969-12-02
Abstract
No abstract record available.
Inventors
- 👤 Wesley N Lindsay
- 👤 William G Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
THE METHOD OF DRYING HOT GASEOUS FLUIDS WHICH COMPRISES CONDUCTING THE GASEOUS FLUIDS ALONG A CONFINED COURSE, CONTACTING SAID FLUIDS AT TWO SEPARATE POINTS OF SAID COURSE WITH SEPARATE SECTORS OF A CIRCULATING STREAM OF A SOLID GRANULAR ADSORBENT IN A MANNER PRODUCING DENSE-PHASE FLUIDIZATION OF SAID ADSORBENT, AND CONTACTING SAID FLUIDS AT A POINT INTERMEDIATELY OF SAID ABOVE MENTIONED POINTS WITH A COOLING MEDIUM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |