US2628178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygenated polymerizable acrylic acid type esters and methods of preparing and polymerizing the same
Assignee: General Electric Co
•
Filing: 1950-07-29
•
Granted: 1953-02-10
•
Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert E Burnett
- 👤 Birger W Nordlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/20; C08F20/00; C08F20/02; C08F20/10; C08F20/20; C08F22/00; C08F22/10; C08F22/1006; C08F283/00; C08F283/01; C09; C09J; C09J4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
THE PROCESS WHICH COMPRISES PASSING OXYGEN THROUGH DIPROPYLENE GLYCOL DIMETHACRYLATE WHILE MAINTAINING THE TEMPERATURE OF THE LATTER ABOVE 25* C., THE SAID PASSAGE OF OXYGEN BEING CONDUCTIVE UNTIL THE SAID DIMETHACRYLATE HAS A FINAL ACTIVE OXYGEN CONTENT OF AT LEAST 0.1%.
Claim 2
Dependent Claim
41 words
THE PROCESS WHICH COMPRISES PASSING OXYGEN THROUGH DIPROPYLENE GLYCOL DIMETHACRYLATE WHILE MAINTAINING THE TEMPERATURE OF THE LATTER ABOVE 25* C., THE SAID PASSAGE OF OXYGEN BEING CONDUCTIVE UNTIL THE SAID DIMETHACRYLATE HAS A FINAL ACTIVE OXYGEN CONTENT OF AT LEAST 0.1%.
References Cited (Backward Citations)
US2198373A
Cited
US2129722A
Cited
GB549234A
Cited
US2370578A
Cited
US2373464A
Cited
US2465991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |