Patent US2534936A successfully refreshed from Google Patents.
US2534936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized vinyl chloride polymers
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-08-10
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Granted: 1950-12-19
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Expires: 1968-08-10
Abstract
No abstract record available.
Inventors
- 👤 Henry A Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A COMPOSITION COMPRISING 100 PARTS OF A POLYMER CONSISTING PREMONINANTLY OF POLYVINYL CHLORIDE AND, AS A HEAT STABILIZER THEREFOR, FROM 0.5 TO 10 PARTS OF AN ALIPHATIC ESTER OF AN ARYL THIOSULFONIC ACID OF THE FORMULA
Claim 2
Dependent Claim
36 words
A COMPOSITION COMPRISING 100 PARTS OF A POLYMER CONSISTING PREMONINANTLY OF POLYVINYL CHLORIDE AND, AS A HEAT STABILIZER THEREFOR, FROM 0.5 TO 10 PARTS OF AN ALIPHATIC ESTER OF AN ARYL THIOSULFONIC ACID OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |