Patent US2539699A successfully refreshed from Google Patents.
Patent US3240750A successfully refreshed from Google Patents.
US3240750A
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Polypropylene stabilized with maleic acid mono or diesters
Assignee: Montedison SpA
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Filing: 1961-12-18
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Granted: 1966-03-15
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Bonvicini Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; D01F6/00; D01F6/02; D01F6/04; D01F6/06; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A POLYMERIC COMPOSITION THAT IS STABLE AGAINST THE ACTION OF HEAT, AGING AND LIGHT, THIS COMPOSITION COMPRISING POLYPROPYLENE AND A STABILIZING AMOUNT OF A STABILIZER CONSISTING OF A MALEIC ACID ESTER OF THE FORMULA
Claim 2
Dependent Claim
34 words
A POLYMERIC COMPOSITION THAT IS STABLE AGAINST THE ACTION OF HEAT, AGING AND LIGHT, THIS COMPOSITION COMPRISING POLYPROPYLENE AND A STABILIZING AMOUNT OF A STABILIZER CONSISTING OF A MALEIC ACID ESTER OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |