Patent US2487804A successfully refreshed from Google Patents.
US2487804A
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Selective sorption process
Assignee: ExxonMobil Oil Corp
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Filing: 1947-10-04
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Granted: 1949-11-15
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Expires: 1967-10-04
Abstract
No abstract record available.
Inventors
- 👤 Donald A Hermanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
C; C10; C10G; C10G25/00; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665264A
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US2331353A
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US2337944A
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US2384311A
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US2398101A
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US2441572A
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US2384946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |