Patent US3136740A successfully refreshed from Google Patents.
US3136740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di(alkylphenyl mercaptide) salts for the stabilization of polyvinyl chloride
Assignee: Novartis Corp
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Filing: 1961-11-27
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Granted: 1964-06-09
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Klemchuk Peter
- 👤 Dexter Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:27
CPC Classifications
C; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
COMPOSITION OF MATTER WHICH COMPRISES POLYVINYL CHLORIDE AND AT LEAST ONE STABILIZER OF THE FORMULA:
Claim 2
Dependent Claim
15 words
COMPOSITION OF MATTER WHICH COMPRISES POLYVINYL CHLORIDE AND AT LEAST ONE STABILIZER OF THE 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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |