US3395982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic production of ammonia
Assignee: Braskem America Inc
•
Filing: 1966-10-14
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Granted: 1968-08-06
•
Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 William J Didycz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0449; B01J8/0453; B01J8/0005; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2898183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |