US3249584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinylchloride stabilized with urea and butyl amino crotonate
Assignee: Montedison SpA
•
Filing: 1962-02-12
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Granted: 1966-05-03
•
Expires: 1982-02-12
Abstract
No abstract record available.
Inventors
- 👤 Gasparis Giovanni De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/175; C08K5/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A HEAT STABILIZED COMPOSITION COMPRISING POLYVINYL CHLORIDE AND A MIXTURE OF UREA AND BUTYL AMINO CROTONATE, THE AMOUNT OF SAID MIXTURE BEING FROM ABOUT 0.02 TO 2% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE POLYVINYL CHLORIDE, UREA, AND BUTYL AMINO CROTONATE.
Claim 2
Dependent Claim
43 words
A HEAT STABILIZED COMPOSITION COMPRISING POLYVINYL CHLORIDE AND A MIXTURE OF UREA AND BUTYL AMINO CROTONATE, THE AMOUNT OF SAID MIXTURE BEING FROM ABOUT 0.02 TO 2% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE POLYVINYL CHLORIDE, UREA, AND BUTYL AMINO CROTONATE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |