US3383881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling composition by pressure
Assignee: Phillips Petroleum Co
•
Filing: 1966-10-28
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Granted: 1968-05-21
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Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Dunn M Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:40
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0157; F17C2227/03; F17C2227/0337; F17C2227/0358; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/043; F17C2250/0439; F17C2250/06; F17C2250/0605; F17C2250/0626; F17C2250/0642; F17C2260/00; F17C2260/05; F17C2260/056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3247713A
Cited
US3245248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |