US3064814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal diffusion method
Assignee: Universal Oil Products Co
•
Filing: 1960-01-26
•
Granted: 1962-11-20
•
Expires: 1980-01-26
Abstract
No abstract record available.
Inventors
- 👤 Grasselli Robert
- 👤 Karl J Allsing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734633A
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US2541071A
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US2723034A
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US2723033A
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GB736134A
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US2827171A
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US2827172A
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US2827173A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |