US3501516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of methanol
Assignee: KENACO Inc
•
Filing: 1968-11-29
•
Granted: 1970-03-17
•
Expires: 1988-11-29
Abstract
No abstract record available.
Inventors
- 👤 Roger W Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:46
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C29/1516; C07C29/1518; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA697244A
Cited
US1791568A
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US2683121A
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US2756121A
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US2964551A
Cited
US2904575A
Cited
US2946754A
Cited
US3064029A
Cited
US3071453A
Cited
GB953877A
Cited
GB916216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |