US3392828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of substances
Assignee: Process Engineering Co SA
•
Filing: 1965-01-21
•
Granted: 1968-07-16
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Muller Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/36; B03B5/38; B03B5/48; B03B5/56; B07; B07B; B07B1/00; B07B2230/00; B07B2230/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE567798A
Cited
US347264A
Cited
US1165379A
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US1467348A
Cited
US1445007A
Cited
US1575601A
Cited
US2431984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |