US3415038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for gas separation by diffusion
Assignee: Gulf General Atomic Inc
•
Filing: 1966-06-23
•
Granted: 1968-12-10
•
Expires: 1986-06-23
Abstract
No abstract record available.
Inventors
- 👤 Merten Ulrich
- 👤 Peter K Gantzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:23
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; B01D63/081; B01D63/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3172741A
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US1421341A
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US1885393A
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US2540152A
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US2540151A
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US2930754A
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US2966235A
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US3133132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |