US3489506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing carbon dioxide from gases
Assignee: Bechtel International Corp
•
Filing: 1965-04-19
•
Granted: 1970-01-13
•
Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Lionel S Galstaun
- 👤 Edward J Wasp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0488; C; C01; C01D; C01D7/00; C01D7/16; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US960788A
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US1212456A
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US2205962A
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US2624694A
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US2615787A
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US2943910A
Cited
US2912301A
Cited
US3101996A
Cited
US3245752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |