US3055862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polypropylene with 2, 2'-methylene bis (4, 6-di-tert-butyl resorcinol)
Assignee: Jefferson Chemical Co Inc
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Filing: 1960-11-14
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Granted: 1962-09-25
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOSITION COMPRISING NORMALLY SOLID THERMOPLASTIC POLYPROPYLENE HAVING INCORPORATED THEREIN A STABILIZING AMOUNT OF 2,2''-METHYLENE-DIS(4,6-DI-TERT-BUTY1 RESORCINOL).
Claim 2
Dependent Claim
16 words
A COMPOSITION COMPRISING NORMALLY SOLID THERMOPLASTIC POLYPROPYLENE HAVING INCORPORATED THEREIN A STABILIZING AMOUNT OF 2,2''-METHYLENE-DIS(4,6-DI-TERT-BUTY1 RESORCINOL).
References Cited (Backward Citations)
US2957849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |