US2881084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized tall oil rosin size compositions and methods of preparation
Assignee: Hercules Powder Co
•
Filing: 1956-09-14
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Granted: 1959-04-07
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Spencer H Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:37
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A TALL OIL ROSIN SIZE COMPOSITION CONTAINING, IN A CRYSTALLIZATION INHIBITOR, FROM ABOUT 5% TO ABOUT 20% BY WEIGHT BASED ON THE WEIGHT OF TALL OIL ROSIN, ON AN ESTER OF A ROSIN ACID AND A POLYTHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PENTAERYTHRITOL AND SORBITOL.
Claim 2
Dependent Claim
49 words
A TALL OIL ROSIN SIZE COMPOSITION CONTAINING, IN A CRYSTALLIZATION INHIBITOR, FROM ABOUT 5% TO ABOUT 20% BY WEIGHT BASED ON THE WEIGHT OF TALL OIL ROSIN, ON AN ESTER OF A ROSIN ACID AND A POLYTHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PENTAERYTHRITOL AND SORBITOL.
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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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |