US2913318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Column-type reactor
Assignee: Union Carbide Corp
•
Filing: 1955-02-08
•
Granted: 1959-11-17
•
Expires: 1975-02-08
Abstract
No abstract record available.
Inventors
- 👤 Erasmus Hendrik De Wet
- 👤 Durward E Hamby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:21
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/04; B01J3/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2100827A
Cited
US2381119A
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US2281715A
Cited
US2533058A
Cited
US2609277A
Cited
US2635949A
Cited
US2700594A
Cited
US2750173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |