Patent US2516945A successfully refreshed from Google Patents.
US2516945A
Expired / Lapsed
US
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Heat stabilized polymeric 2, 3-dichloro-1,3-butadiene and process for obtaining same
Assignee: EIDP Inc
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Filing: 1948-03-31
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Granted: 1950-08-01
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Expires: 1968-03-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A POLYMER OF 2,3 - DICHLORO - 1,3-BUTADIENE CONTAINING IN MINOR AMOUNT, AND IN AMOUNT OF AT LEAST 0.5% BY WEIGHT THEREOF, AN N,N-DIALKYLDITHIOCARBAMATE, IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 12 CARBON ATOMS, OF A POLYMETHYLENE GLYCOL HAVING FROM 6 TO 18 METHYLENE GROUPS BETWEEN THE ALCOHOLIC HYDROXYLS.
Claim 2
Dependent Claim
51 words
A POLYMER OF 2,3 - DICHLORO - 1,3-BUTADIENE CONTAINING IN MINOR AMOUNT, AND IN AMOUNT OF AT LEAST 0.5% BY WEIGHT THEREOF, AN N,N-DIALKYLDITHIOCARBAMATE, IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 12 CARBON ATOMS, OF A POLYMETHYLENE GLYCOL HAVING FROM 6 TO 18 METHYLENE GROUPS BETWEEN THE ALCOHOLIC HYDROXYLS.
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) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |