US2563871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyhydric phenolic ether-modified rosin esters and process of making same
Assignee: Ellis Foster Co
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Filing: 1947-11-12
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Granted: 1951-08-14
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Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 William B Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
C; C08; C08F; C08F2/00; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A RESINOUS COMPOSITION COMPRISING THE REACTION PRODUCT AT BETWEEN 200* AND 300* C. OF (A) A NATURAL GUM COMPONENT SELECTED FROM THE GROUP CONSISTING OF THE NATURAL GUMS ROSIN, COPAL, GUM ELEMI, SANDARAC AND THUS, THE POLYHYDRIC ALCOHOL ESTERS OF SAID NATURAL GUMS, AND ALKYD RESINS MODIFIED BY SAID NATURAL GUMS, WITH FROM 1% TO 50% OF (B) A POLYHYDRIC PHENOLIC UNSATURATED ETHER HAVING THE FORMULA.
Claim 2
Dependent Claim
66 words
A RESINOUS COMPOSITION COMPRISING THE REACTION PRODUCT AT BETWEEN 200* AND 300* C. OF (A) A NATURAL GUM COMPONENT SELECTED FROM THE GROUP CONSISTING OF THE NATURAL GUMS ROSIN, COPAL, GUM ELEMI, SANDARAC AND THUS, THE POLYHYDRIC ALCOHOL ESTERS OF SAID NATURAL GUMS, AND ALKYD RESINS MODIFIED BY SAID NATURAL GUMS, WITH FROM 1% TO 50% OF (B) A POLYHYDRIC PHENOLIC UNSATURATED ETHER HAVING THE FORMULA.
References Cited (Backward Citations)
US2285797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |