US3531246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molecular sieve sorbent and process for the manufacture of ammonia
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-04-08
•
Granted: 1970-09-29
•
Expires: 1984-04-08
Abstract
No abstract record available.
Inventors
- 👤 John M Matsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:58
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0458; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319663A
Cited
US1787875A
Cited
GB481429A
Cited
US3034947A
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US2944627A
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US3193987A
Cited
US3287086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |