US2535290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic composition
Assignee: Hercules Powder Co
•
Filing: 1947-02-26
•
Granted: 1950-12-26
•
Expires: 1967-02-26
Abstract
No abstract record available.
Inventors
- 👤 Reginald W Ivett
- 👤 Koch William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A COMPOSITION COMPRISING A THERMOPLASTIC CELLULOSE ETHER AND FROM ABOUT 0.5% TO ABOUT 5% OF DIISOBUTYLPHENOL, SAID COMPOSITION BEING STABILIZED WITH RESPECT TO VISCOSITY AND COLOR DURING AND AFTER EXPOSURE TO HEAT, LIGHT, OXIDATION, AND WEATHERING BY VIRTUE OF THE PRESENCE THEREIN OF SAID DIISOBUTYLPHENOL.
Claim 2
Dependent Claim
45 words
A COMPOSITION COMPRISING A THERMOPLASTIC CELLULOSE ETHER AND FROM ABOUT 0.5% TO ABOUT 5% OF DIISOBUTYLPHENOL, SAID COMPOSITION BEING STABILIZED WITH RESPECT TO VISCOSITY AND COLOR DURING AND AFTER EXPOSURE TO HEAT, LIGHT, OXIDATION, AND WEATHERING BY VIRTUE OF THE PRESENCE THEREIN OF SAID DIISOBUTYLPHENOL.
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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) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |