US2434643A
Expired / Lapsed
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Oxidation of an alkali metal salt of dehydroabietic acid
Assignee: Hercules Powder Co
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Filing: 1946-02-02
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Granted: 1948-01-20
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Expires: 1966-02-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
C; C09; C09F; C09F1/00; C07; C07C; C07C62/00; C07C62/30; C07C62/38; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |