Patent US2750367A successfully refreshed from Google Patents.
US2750367A
Expired / Lapsed
US
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Derivatives of dehydroabietonitrile
Assignee: Hercules Powder Co
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Filing: 1955-03-25
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Granted: 1956-06-12
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:40
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/45; C07C255/47; C08; C08K; C08K5/00; C08K5/16; C08K5/315; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
THE COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
THE COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |