US3243408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefin compositions
Assignee: Wyeth Holdings LLC
•
Filing: 1959-05-04
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Granted: 1966-03-29
•
Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Haig C Donoian
- 👤 Savides Christos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A COMPOSITION COMPRISING A POLYOLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE AND A TWO-COMPONENT STABLIZER THEREFOR CONSISTING ESSENTIALLY OF (1) FROM ABOUT 0.001% TO ABOUT 4% OF 2,6-BIS4-METHYL PHENOL AND (II) FROM ABOUT 0.001% TO ABOUT 4% OF A THIO COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
47 words
A COMPOSITION COMPRISING A POLYOLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE AND A TWO-COMPONENT STABLIZER THEREFOR CONSISTING ESSENTIALLY OF (1) FROM ABOUT 0.001% TO ABOUT 4% OF 2,6-BIS4-METHYL PHENOL AND (II) FROM ABOUT 0.001% TO ABOUT 4% OF A THIO COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2519755A
Cited
GB758973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |