US2706733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated isocyanates and carbamyl chlorides
Assignee: 3M Co
•
Filing: 1950-03-13
•
Granted: 1955-04-19
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:36
CPC Classifications
C; C07; C07C; C07C265/00; Y; Y10; Y10S; Y10S8/00; Y10S8/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
AS NEW AND USEFUL COMPOUNDS, THE 1,1-DIHYDROPERFLUOROALKYL ISOCYANATE COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
13 words
AS NEW AND USEFUL COMPOUNDS, THE 1,1-DIHYDROPERFLUOROALKYL ISOCYANATE COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
15 words
AS NEW AND USEFUL COMPOUNDS, THE CARBAMYL CHLORIDES OF 1,1-DIHYDROPERFLUOROALKYL ISOCYANATES REPRESENTED BY THE FORMULA:
Claim 4
Dependent Claim
15 words
AS NEW AND USEFUL COMPOUNDS, THE CARBAMYL CHLORIDES OF 1,1-DIHYDROPERFLUOROALKYL ISOCYANATES REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US2362648A
Cited
US2428843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |