US2516064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization in the presence of cobalt salts
Assignee: EIDP Inc
•
Filing: 1946-08-07
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Granted: 1950-07-18
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Expires: 1966-08-07
Abstract
No abstract record available.
Inventors
- 👤 Barnard M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F20/00; C08F20/02; C08F20/10; C08F20/20; Y; Y10; Y10S; Y10S430/00; Y10S430/137
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
PROCESS WHICH COMPRISES MAINTAINING AT 0* C. TO 130*C. A COMPOSITION COMPRISING THE DIMETHACRYLATE ESTERS OF A MIXTURE OF GLYCOLS HAVING THE FORMULA HO-(CH2-CH2-O)N-H, WHEREIN N IS AN INTEGER, SAID MIXTURE HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 185 AND 270, AND, AS A POLYMERIZATION CATALYST THEREFOR, 1.0% TO 4.0% OF COBALT NITRATE BASED ON THE WEIGHT OF SAID ESTERS, UNTIL SAID ESTERS, ARE POLYMERIZED.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |