US2597702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroalkylphosphoric compounds
Assignee: EIDP Inc
•
Filing: 1950-06-29
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Granted: 1952-05-20
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Anthony F Benning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A FLUOROALKYLPHOSPHORIC COMPOUND HAVING THE FORMULA (H(CF2)2NCH2O)XPO(OM)Y WHEREIN N IS AN INTEGER FROM 1 TO 5, INCLUSIVE, X IS AN INTEGER FROM 1 TO 3, INCLUSIVE, Y EQUALS 3-X, AND M IS FROM THE GROUP CONSISTING OF HYDROGEN, ALKALI METAL, AMMONIUM, AND SUBSTITUTED AMMONIUM.
Claim 2
Dependent Claim
44 words
A FLUOROALKYLPHOSPHORIC COMPOUND HAVING THE FORMULA (H(CF2)2NCH2O)XPO(OM)Y WHEREIN N IS AN INTEGER FROM 1 TO 5, INCLUSIVE, X IS AN INTEGER FROM 1 TO 3, INCLUSIVE, Y EQUALS 3-X, AND M IS FROM THE GROUP CONSISTING OF HYDROGEN, ALKALI METAL, AMMONIUM, AND SUBSTITUTED AMMONIUM.
References Cited (Backward Citations)
US2411159A
Cited
US2451375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |