US3422004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molecular sieve regeneration method
Assignee: Universal Oil Products Co
•
Filing: 1965-04-19
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Granted: 1969-01-14
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Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Frank G Padrta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:07
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/12; B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2886508A
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US2818449A
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US2886509A
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US2988577A
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US2894998A
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US3094569A
Cited
US3075023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |