US3849450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(trifluoromethyl)epoxides
Assignee: United States Department of the Navy
•
Filing: 1973-12-11
•
Granted: 1974-11-19
•
Expires: 1993-12-11
Abstract
Abstract 1. A DIFUNCTIONAL EPOXIDE COMPOUND COMPRISING THE FORMULA 1,4-DI(3,3-DI(F3C-)-OXIRAN-2-YL-)-BENZENE
Inventors
- 👤 Rear J O
- 👤 J Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:58
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72; C07D; C07D303/00; C07D303/02; C07D303/08; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A DIFUNCTIONAL EPOXIDE COMPOUND COMPRISING THE FORMULA
Claim 2
Dependent Claim
7 words
A DIFUNCTIONAL EPOXIDE COMPOUND COMPRISING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |