US3350347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polypropylene
Assignee: Sunoco Inc
•
Filing: 1960-07-29
•
Granted: 1967-10-31
•
Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 John A Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A POLYMER COMPOSITION HAVING IMPROVED OXIDATION AND THERMAL STABILITY COMPRISING ISOTACTIC, SUBSTANTIALLY CRYSTALLINE POLYPROPYLENE AND A STABILIZING QUANTITY OF AN ARYLENE-BIS-PHENYL HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
25 words
A POLYMER COMPOSITION HAVING IMPROVED OXIDATION AND THERMAL STABILITY COMPRISING ISOTACTIC, SUBSTANTIALLY CRYSTALLINE POLYPROPYLENE AND A STABILIZING QUANTITY OF AN ARYLENE-BIS-PHENYL HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
FR1020875A
Cited
FR1171286A
Cited
US2985617A
Cited
GB806014A
Cited
US2957849A
Cited
US3062895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |