US2643242A
Expired / Lapsed
US
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Polymerized dichlorostyrenes containing organo-tin anticrazing agents
Assignee: Mathieson Chemical Corp
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Filing: 1948-08-18
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Granted: 1953-06-23
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Expires: 1968-08-18
Abstract
No abstract record available.
Inventors
- 👤 John W Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:47
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/16; C08F12/18; C08K; C08K5/00; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
POLYMERIZED DICHLOROSTYRENES HAVING INCORPORATED THEREIN A SMALL QUANTITY OF AN ANTICRAZING AGENT WHICH CONSISTS OF AN ORGANO TIN COMPOUND HAVING THE STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
29 words
POLYMERIZED DICHLOROSTYRENES HAVING INCORPORATED THEREIN A SMALL QUANTITY OF AN ANTICRAZING AGENT WHICH CONSISTS OF AN ORGANO TIN COMPOUND HAVING THE STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
GB497879A
Cited
US2267777A
Cited
US2267779A
Cited
US2307092A
Cited
US2477349A
Cited
US2476422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |