US3391064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methanol refining
Assignee: EIDP Inc
•
Filing: 1967-08-28
•
Granted: 1968-07-02
•
Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Akell Robert Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:25
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; B; B01; B01D; B01D3/00; B01D3/001; Y; Y10; Y10S; Y10S203/00; Y10S203/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2364341A
Cited
US2470222A
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US2551584A
Cited
US2666735A
Cited
US2806816A
Cited
US2904575A
Cited
US3092667A
Cited
US3230156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |