US2627933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerogel diffusion unit
Assignee: Sinclair Refining Co
•
Filing: 1947-06-28
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Granted: 1953-02-10
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Expires: 1967-06-28
Abstract
No abstract record available.
Inventors
- 👤 Teter John Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:50
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; G; G01; G01N; G01N7/00; G01N7/14; C01B2203/00; C01B2203/04; C01B2203/0465; C01B2203/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191105691A
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US1124347A
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US1174631A
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US1498097A
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US1922499A
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US1934031A
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US2147109A
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GB452764A
Cited
US2334872A
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US2317803A
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US2334159A
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US2330640A
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US2437422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |