US3636031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidant system for polyolefins
Assignee: Phillips Petroleum Co
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Filing: 1969-07-24
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Granted: 1972-01-18
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Expires: 1989-07-24
Abstract
Abstract A STABILIZER SYSTEM FOR POLY 1-OLEFINS COMPRISING AN ORGANIC PHOSPHITE ESTER, A THIOESTER, 2,6-DI-TERT-BUTYL-4METHYLPHENOL, AND 4,6-DI(4-HYDROXY-3,5-DI-TERT-BUTYLPHENOXY)-2-OCTYLTHIO-1,3,5-TRIAZINE.
Inventors
- 👤 William O Drake
- 👤 Kenneth R Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |