Patent US2864716A successfully refreshed from Google Patents.
US2864716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized paste rosin size
Assignee: Hercules Powder Co
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Filing: 1957-07-26
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Granted: 1958-12-16
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Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 Schmalz Alfred Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/62; D06; D06M; D06M15/00; D06M15/01; D06M15/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PASTE ROSIN SIZE COMPOSITION STABILIZED AGAINST CRYSTALLIZATION BY THE INCORPORATION THEREIN OF STABILIZING AMOUNTS OF A ROSIN AMINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF (1) CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (2) HYDROGENATED CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (3) HYDROLYZED CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (4) CONDENSATION PRODUCTS OF ROSIN AMINE WITH ALKYL HALIDES HAVING AT LEAST 3 CARBON ATOMS, (5) CONDENSATION PRODUCTS OF ROSIN AMINE WITH LOWER ALKYLENE DIHALIDES, AND (6) REACTION PRODUCTS OF MALEIC ANHYDRIDE WITH COMPOUNDS OBTAINED BY THE REDUCTION OF CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, SAID ROSIN AMINE DERIVATIVE HAVING A MOLECULAR WEIGHT OF AT LEAST 327.
Claim 2
Dependent Claim
110 words
A PASTE ROSIN SIZE COMPOSITION STABILIZED AGAINST CRYSTALLIZATION BY THE INCORPORATION THEREIN OF STABILIZING AMOUNTS OF A ROSIN AMINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF (1) CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (2) HYDROGENATED CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (3) HYDROLYZED CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, (4) CONDENSATION PRODUCTS OF ROSIN AMINE WITH ALKYL HALIDES HAVING AT LEAST 3 CARBON ATOMS, (5) CONDENSATION PRODUCTS OF ROSIN AMINE WITH LOWER ALKYLENE DIHALIDES, AND (6) REACTION PRODUCTS OF MALEIC ANHYDRIDE WITH COMPOUNDS OBTAINED BY THE REDUCTION OF CONDENSATION PRODUCTS OF ROSIN AMINE WITH ACRYLONITRILE, SAID ROSIN AMINE DERIVATIVE HAVING A MOLECULAR WEIGHT OF AT LEAST 327.
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |