US2522501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl diaryl ether polymers
Assignee: Sprague Electric Co
•
Filing: 1944-10-19
•
Granted: 1950-09-19
•
Expires: 1964-10-19
Abstract
No abstract record available.
Inventors
- 👤 Lester A Brooks
- 👤 Markarian Moushy
- 👤 Nazzewski Mathew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:39
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOSITION COMPRISING A POLYMER OF A DIARYL ETHER, AND ARYL GROUP OF WHICH IS SUBSTITUTED
Claim 2
Dependent Claim
16 words
A COMPOSITION COMPRISING A POLYMER OF A DIARYL ETHER, AND ARYL GROUP OF WHICH IS SUBSTITUTED
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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |