US3236805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene stabilized with thioesters of long-chain alkyl compounds and process for preparing same
Assignee: Montedison SpA
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Filing: 1961-07-31
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Granted: 1966-02-22
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Caldo Cornelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; C07; C07C; C07C323/00; C07D; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C08K5/372; C08K5/378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A COMPOSITION STABILIZED AGAINST THE ACTION OF HEAT, LIGHT, AND AGING, THIS COMPOSITION COMPRISING POLYPROPYLENE AND FROM ABOUT 0.02 TO 2 PERCENT B Y WEIGHT BASED ON SAID POLYPROPYLENE OF A THIOESTER OF THE GENERAL FORMULA
Claim 2
Dependent Claim
36 words
A COMPOSITION STABILIZED AGAINST THE ACTION OF HEAT, LIGHT, AND AGING, THIS COMPOSITION COMPRISING POLYPROPYLENE AND FROM ABOUT 0.02 TO 2 PERCENT B Y WEIGHT BASED ON SAID POLYPROPYLENE OF A THIOESTER OF THE GENERAL 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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |