Patent US2424074A successfully refreshed from Google Patents.
US2424074A
Expired / Lapsed
US
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Tall oil ester resins and their production
Assignee: Shell Development Co
•
Filing: 1943-10-28
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Granted: 1947-07-15
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Expires: 1963-10-28
Abstract
No abstract record available.
Inventors
- 👤 Franklin A Bent
- 👤 Elbert A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:50
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2299862A
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US1921566A
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US2228365A
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US2291824A
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US2332460A
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US2332900A
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US2376504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |