US3406014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process for the production of oxygen and nitrogen from air
Assignee: Lummus Technology LLC
•
Filing: 1965-03-22
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Granted: 1968-10-15
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Salvatore A Guerrieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:25
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/02; C01B13/00; C01B13/02; C01B13/0229; C01B13/0233; C01B2210/00; C01B2210/0043; C01B2210/0046; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB628572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |