Patent US2451136A successfully refreshed from Google Patents.
US2451136A
Expired / Lapsed
US
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Treatment of normally gaseous mixtures
Assignee: Universal Oil Products Co
•
Filing: 1944-05-29
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Granted: 1948-10-12
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Expires: 1964-05-29
Abstract
No abstract record available.
Inventors
- 👤 Herman H Wenzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21239E
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US1405154A
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US1465600A
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US1299455A
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US1452322A
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US1437102A
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US1942131A
Cited
US1987267A
Cited
US2059494A
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US2272503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |