US3773741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nucleated polypropylene
Assignee: Himont Inc
•
Filing: 1972-03-20
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Granted: 1973-11-20
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Expires: 1992-03-20
Abstract
Abstract THE PRESENT INVENTION RELATES TO THE NUCLEATION OF CRYSTALLINE POLYMERS OF PROPYLENE. MORE PARTICULARLY, IT RELATES TO A COMPOSITION COMPRISING A CRYSTALLINE POLYMER OF PROPYLENE AND AS A NUCLEATOR THEREFOR A MINOR AMOUNT OF POTASSIUM SULFATE.
Inventors
- 👤 D Berta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:27
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |