US2433869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of contact masses
Assignee: Houdry Process Corp
•
Filing: 1944-03-09
•
Granted: 1948-01-06
•
Expires: 1964-03-09
Abstract
No abstract record available.
Inventors
- 👤 Hubert A Shabaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:30
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1592543A
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US1584716A
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US1762228A
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US1772055A
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US1893812A
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US1998219A
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US2146718A
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US2299768A
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US2326523A
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US2340935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |