US2539362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride compositions stabilized with a mixture of a monoalkoxyethyl fumarate or maleate and a basic lead salt
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-11-03
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Granted: 1951-01-23
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Expires: 1968-11-03
Abstract
No abstract record available.
Inventors
- 👤 Darby Joseph Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08K3/00; C08K3/10; C08K3/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION COMPRISING A POLYMERIZED VIVYL RESIN CONTAINING PREDOMINANTLY COMBINED VINYL CHLORIDE, A MINOR AMOUNT OF A BASIC LEAD SALT AND 0.1 TO 3% BY WEIGHT OF FINISHED COMPOSITION OF AN ESTER SELECTED FROM TE GROUP CONSISTING OF MONOALKOXYETHYL FUMARATES AND MONOALKOXYETHYL MALEATES WHEREIN THE ALKYL SUBSTITUENTS CONTIN AT LEAST 1 AND NOT MORE THAN 12 CARBON ATOMS.
Claim 2
Dependent Claim
58 words
A COMPOSITION COMPRISING A POLYMERIZED VIVYL RESIN CONTAINING PREDOMINANTLY COMBINED VINYL CHLORIDE, A MINOR AMOUNT OF A BASIC LEAD SALT AND 0.1 TO 3% BY WEIGHT OF FINISHED COMPOSITION OF AN ESTER SELECTED FROM TE GROUP CONSISTING OF MONOALKOXYETHYL FUMARATES AND MONOALKOXYETHYL MALEATES WHEREIN THE ALKYL SUBSTITUENTS CONTIN AT LEAST 1 AND NOT MORE THAN 12 CARBON ATOMS.
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) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |