US2559751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroalkylsulfuric compounds
Assignee: EIDP Inc
•
Filing: 1950-06-29
•
Granted: 1951-07-10
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Berry Kenneth Lester
- 👤 Jr James Arthur Bittles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
C; C07; C07C; C07C305/00; C07C305/02; C07C305/04; C07C305/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A FLUOROALKYLSULFURIC COMPOUND FROM THE GROUP CONSISTING OF FLUOROALKYLSULFURIC ACIDS HAVING THE FORMULA B(CF2)NCH2OSO3H WHEREIN B IS FROM THE GROUP CONSISTING OF HYDROGEN AND FLUORINE AND N IS AN INTEGER AT LEAST EQUAL TO 4, AND SALTS THEREOF.
Claim 2
Dependent Claim
38 words
A FLUOROALKYLSULFURIC COMPOUND FROM THE GROUP CONSISTING OF FLUOROALKYLSULFURIC ACIDS HAVING THE FORMULA B(CF2)NCH2OSO3H WHEREIN B IS FROM THE GROUP CONSISTING OF HYDROGEN AND FLUORINE AND N IS AN INTEGER AT LEAST EQUAL TO 4, AND SALTS THEREOF.
References Cited (Backward Citations)
US2411159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |