US2640814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tall oil-polyamino-aldehyde reaction product
Assignee: Wyeth Holdings LLC
•
Filing: 1951-06-12
•
Granted: 1953-06-02
•
Expires: 1971-06-12
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Schmutzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS FOR THE PREPARATION OF A HYDROCARBON SOLVENT SOLUBLE RESINOUS MATERIAL COMPRISING HEAT-REACTING TALLOIL WITH AN ALDEHYDE-REACTABLE RESIN FORMING POLYAMINO COMPOUND, ADDING AN ALDEHYDE AND HEAT-REACTING THE MIXTURE TO FORM A RESINOUS MATERIAL.
Claim 2
Dependent Claim
34 words
A PROCESS FOR THE PREPARATION OF A HYDROCARBON SOLVENT SOLUBLE RESINOUS MATERIAL COMPRISING HEAT-REACTING TALLOIL WITH AN ALDEHYDE-REACTABLE RESIN FORMING POLYAMINO COMPOUND, ADDING AN ALDEHYDE AND HEAT-REACTING THE MIXTURE TO FORM A RESINOUS MATERIAL.
References Cited (Backward Citations)
GB611012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |