US2703810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of glycol urethanes and methods of making them
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1951-09-05
•
Granted: 1955-03-08
•
Expires: 1971-09-05
Abstract
No abstract record available.
Inventors
- 👤 Viard Marcel Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:16
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
THE COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
5 words
THE COMPOUNDS OF THE FORMULA
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) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |