US3119783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene stabilized with a mixture of a para-tertiaryalkylphenol-formaldehyde resin and an organic phosphite
Assignee: Union Carbide Corp
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Filing: 1959-10-30
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Granted: 1964-01-28
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Bernard O Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/5398; C08L; C08L23/00; C08L23/02; C08L23/10; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A STABILIZED POLYPROPYLENE COMPOSITION COMPRISING A NORMALLY SOLID POLYPROPYLENE, A STABILIZING AMOUNT OF AN A-STAGE PARA-TERTIARYALKYLPHENOL-FORMALDEHYDE RESIN IN WHICH THE ALKYL GROUP OF THE PARA-TERTIARYALKYLPHENOL CONTAINS FROM 4 TO 20 CARBON ATOMS AND A DECOLORIZING AMOUNT OF AN ORGANIC PHOSPHITE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
44 words
A STABILIZED POLYPROPYLENE COMPOSITION COMPRISING A NORMALLY SOLID POLYPROPYLENE, A STABILIZING AMOUNT OF AN A-STAGE PARA-TERTIARYALKYLPHENOL-FORMALDEHYDE RESIN IN WHICH THE ALKYL GROUP OF THE PARA-TERTIARYALKYLPHENOL CONTAINS FROM 4 TO 20 CARBON ATOMS AND A DECOLORIZING AMOUNT OF AN ORGANIC PHOSPHITE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
FR852453A
Cited
US2456231A
Cited
US2572571A
Cited
US2816876A
Cited
US3013003A
Cited
US2889306A
Cited
US2968641A
Cited
US2951055A
Cited
US2968670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |