US3709919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of methanol
Assignee: Shell USA Inc
•
Filing: 1970-12-21
•
Granted: 1973-01-09
•
Expires: 1990-12-21
Abstract
Abstract METHANOL IS PRODUCED BY REACTION OF CARBON OXIDES AND HYDROGEN IN THE PRESENCE OF A COPPER-ZINC-SILVER CONTAINING OXIDE CATALYST.
Inventors
- 👤 E Magoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:26
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8953; C07C29/153; C07C29/154; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |