US3030221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin size stabilized against crystallization and method of making
Assignee: Hercules Powder Co
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Filing: 1957-11-19
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Granted: 1962-04-17
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Expires: 1977-11-19
Abstract
No abstract record available.
Inventors
- 👤 Spencer H Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:05
CPC Classifications
C; C11; C11D; C11D15/00; C08; C08L; C08L93/00; C08L93/04; D; D21; D21H; D21H17/00; D21H17/62; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
A PSTE ROSIN SIZE COMPOSITION STABILIZED AGAINST CRYSTALLIZATION BY THE INCORPORATION THEREIN OF FROM ABOUT 10% TO ABOUT 20% BY WEIGHT, BASED ON THE WEIGHT OF ROSIN, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N-ABIETYL MONAMIDE OF ABIETIC ACID DIMER, N-ABIETYL BENZAMIDE, DIABIETY BENZENEPHOSPHONAMIDE, N-HEXTYL ABIETAMIDE AND BENZYL ABIETAMIDE.
References Cited (Backward Citations)
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US2767089A
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US2758026A
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US2776221A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |