US2820020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylenically unsaturated urea compounds, method of making same, and methods of using same
Assignee: PPG Industries Inc
•
Filing: 1954-09-13
•
Granted: 1958-01-14
•
Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Franko-Filipasic Boriv Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:52
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C08; C08F; C08F26/00; C08F26/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
A N-POLYMETHYLENE BIS(N''N''-ALLYLUREA).
Claim 2
Dependent Claim
3 words
A N-POLYMETHYLENE BIS(N''N''-ALLYLUREA).
References Cited (Backward Citations)
BE506809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |