Patent US3004949A successfully refreshed from Google Patents.
US3004949A
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Stabilization of vinyl chloride polymers with sulfur containing compounds
Assignee: NL Industries Inc
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Filing: 1957-09-06
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Granted: 1961-10-17
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Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
- 👤 Chevassus Fernand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:48
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/72; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/38; C08K5/39; C08K5/40; C08K5/45; C08K5/46; C08K5/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A VINYL CHLORIDE POLYMER COMPOSITION CONTAINING, AS COLOR STABILIZER THEREFOR, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF MERCAPTOBENZOTHIAZOL DISULFIDE, MERCAPTOBENZIMIDAZOL, AND THE ZINC, SODIUM, CADMIUM, AND TIN SALTS OF MERCAPTO-BENZIMIDAZOL, AND HAVING SAID STABILIZER PRESENT IN AMOUNTS NO LESS THAN 0.1%.
Claim 2
Dependent Claim
42 words
A VINYL CHLORIDE POLYMER COMPOSITION CONTAINING, AS COLOR STABILIZER THEREFOR, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF MERCAPTOBENZOTHIAZOL DISULFIDE, MERCAPTOBENZIMIDAZOL, AND THE ZINC, SODIUM, CADMIUM, AND TIN SALTS OF MERCAPTO-BENZIMIDAZOL, AND HAVING SAID STABILIZER PRESENT IN AMOUNTS NO LESS THAN 0.1%.
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |