Patent US2541646A successfully refreshed from Google Patents.
US2541646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicarbamates and polymers
Assignee: Wingfoot Corp
•
Filing: 1946-04-01
•
Granted: 1951-02-13
•
Expires: 1966-04-01
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:05
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
THE IMIDODIFORMIC ACID DIESTER OF A MONOHYDRIC ALCOHOL HAVING AN ETHYLENIC DOUBLE BOND ADJACENT TO THE SECOND CARBON ATOM FROM THE HYDROXYL GROUP AND CONNECTING TWO CARBON ATOMS.
Claim 2
Dependent Claim
28 words
THE IMIDODIFORMIC ACID DIESTER OF A MONOHYDRIC ALCOHOL HAVING AN ETHYLENIC DOUBLE BOND ADJACENT TO THE SECOND CARBON ATOM FROM THE HYDROXYL GROUP AND CONNECTING TWO CARBON ATOMS.
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |