US2998405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefin compositions
Assignee: Hercules Powder Co
•
Filing: 1959-08-25
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Granted: 1961-08-29
•
Expires: 1979-08-25
Abstract
No abstract record available.
Inventors
- 👤 Winfred E Weldy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A STABILIZED POLYOLEFIN COMPOSITION COMPRISING A STEREOREGULAR POLYMER OF AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE, 1-BUTENE, 1-PENTENE, 3-METHYL1-BUTENE, 4-METHYL-1-PENTENE AND STYRENE AND IN INTIMATE ADMIXTURE THEREWITH A THIODIARYLAMINO HAVING THE FORMULA
Claim 2
Dependent Claim
34 words
A STABILIZED POLYOLEFIN COMPOSITION COMPRISING A STEREOREGULAR POLYMER OF AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE, 1-BUTENE, 1-PENTENE, 3-METHYL1-BUTENE, 4-METHYL-1-PENTENE AND STYRENE AND IN INTIMATE ADMIXTURE THEREWITH A THIODIARYLAMINO HAVING THE FORMULA
References Cited (Backward Citations)
US2519755A
Cited
US2605249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |