US2615700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contacting liquids with gases or vapors
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1947-02-25
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Granted: 1952-10-28
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Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 Dixon Olaf George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:49
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/324; B01J2219/32408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US843554A
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US863154A
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FR442984A
Cited
US1531112A
Cited
GB299075A
Cited
US1889463A
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FR849252A
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US2332224A
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US2498427A
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |