US2717838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized tall oil rosin and dry sizes prepared therefrom
Assignee: Wyeth Holdings LLC
•
Filing: 1951-07-11
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Granted: 1955-09-13
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Expires: 1971-07-11
Abstract
No abstract record available.
Inventors
- 👤 Justus C Barthel
- 👤 Hastings Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:10
CPC Classifications
C; C11; C11D; C11D15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A STORAGE-STABLE DRY ROSIN SIZE CONSISTING ESSENTIALLY OF THE DRY SAPONIFICATION PRODUCT OF ROSIN REMAINING AFTER THE REMOVAL OF THE FATTY ACIDS FROM TALL OIL BY FRACTIONAL DISTILLATION STABILIZED BY DISPROPORTIONATION TO A MININUM SPECIFIC ROTATION OF ABOUT +25 AFTER INCORPORATING ABOUT 0.5% TO ABOUT 5% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF SULFUR AND SALTS OF NON-OXIDIZINGOXYACIDS OF SULFUR WITH STRONG BASES THEREIN, SAID ROSIN SIZE ALSO CONTAINING STABILIZING AMOUNTS OF AN ORGANIC CHEMICAL ROSIN SIZE ANTIOXIDANT.
Claim 2
Dependent Claim
81 words
A STORAGE-STABLE DRY ROSIN SIZE CONSISTING ESSENTIALLY OF THE DRY SAPONIFICATION PRODUCT OF ROSIN REMAINING AFTER THE REMOVAL OF THE FATTY ACIDS FROM TALL OIL BY FRACTIONAL DISTILLATION STABILIZED BY DISPROPORTIONATION TO A MININUM SPECIFIC ROTATION OF ABOUT +25 AFTER INCORPORATING ABOUT 0.5% TO ABOUT 5% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF SULFUR AND SALTS OF NON-OXIDIZINGOXYACIDS OF SULFUR WITH STRONG BASES THEREIN, SAID ROSIN SIZE ALSO CONTAINING STABILIZING AMOUNTS OF AN ORGANIC CHEMICAL ROSIN SIZE ANTIOXIDANT.
References Cited (Backward Citations)
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |