Patent US3440251A successfully refreshed from Google Patents.
US3440251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perhaloethoxy difluoroamines
Assignee: Boeing North American Inc
•
Filing: 1963-01-03
•
Granted: 1969-04-22
•
Expires: 1983-01-03
Abstract
No abstract record available.
Inventors
- 👤 Donald Pilipovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:08
CPC Classifications
C; C07; C07C; C07C239/00; C07C239/08; C07C239/20; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105; Y; Y10; Y10S; Y10S149/00; Y10S149/119
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
A PROCESS FOR PRODUCING A COMPOUND OF THE FORMULA CFX2-CX2-ONF2 WHEREIN X REPRESENTS A HAOLGEN, WHICH PROCESS COMPRISES REACTING TETRAHALOETHYLENE WITH TRIFLUORAMINE OXIDE AND BORON TRIFLUORIDE IN CONDENSED PHASE.
Claim 2
Dependent Claim
29 words
A PROCESS FOR PRODUCING A COMPOUND OF THE FORMULA CFX2-CX2-ONF2 WHEREIN X REPRESENTS A HAOLGEN, WHICH PROCESS COMPRISES REACTING TETRAHALOETHYLENE WITH TRIFLUORAMINE OXIDE AND BORON TRIFLUORIDE IN CONDENSED PHASE.
Claim 3
Dependent Claim
11 words
A COMPOUND OF THE FORMULA CFX2-CX2-ONF2 WHEREIN X REPRESENTS A HALOGEN.
Claim 4
Dependent Claim
11 words
A COMPOUND OF THE FORMULA CFX2-CX2-ONF2 WHEREIN X REPRESENTS A HALOGEN.
References Cited (Backward Citations)
US3214465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |