US2530976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chilling mixtures
Assignee: Standard Oil Development Co
•
Filing: 1947-09-12
•
Granted: 1950-11-21
•
Expires: 1967-09-12
Abstract
No abstract record available.
Inventors
- 👤 John R Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:59
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C10; C10G; C10G73/00; C10G73/02; C10G73/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977055A
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US2303721A
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US1988767A
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US1988768A
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US2031118A
Cited
US2104310A
Cited
US2122019A
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US2098545A
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US2143872A
Cited
US2232840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |