US2876247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric polyfluoroalkyl phosphonitrilates
Assignee: Olin Corp
•
Filing: 1957-07-03
•
Granted: 1959-03-03
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Rudi F W Ratz
- 👤 Christoph J Grundmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:28
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
POLYMERIC POLYFLUOROALKYL PHOSPHONITRILATES OF THE FORMULA
Claim 2
Dependent Claim
6 words
POLYMERIC POLYFLUOROALKYL PHOSPHONITRILATES OF THE FORMULA
Claim 3
Independent Claim
55 words
THE METHOD OF PRODUCING POLYMERIC POLYFLUOROALKYL PHOSPHONITRILATES WHICH COMPRISES ADMIXING A POLYMERIC PHOSPHORUS NITRILIC HALIDE OF THE FORMULA (X2P=N)N WHEREIN N IS A WHOLE NUMBER OF FROM 3 TO 7 AND X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND FLUORINE, WITH AN ALKALI METAL SALT OF A POLYFLUORCO CARBINOL OF THE FORMULA
Claim 4
Independent Claim
55 words
THE METHOD OF PRODUCING POLYMERIC POLYFLUOROALKYL PHOSPHONITRILATES WHICH COMPRISES ADMIXING A POLYMERIC PHOSPHORUS NITRILIC HALIDE OF THE FORMULA (X2P=N)N WHEREIN N IS A WHOLE NUMBER OF FROM 3 TO 7 AND X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND FLUORINE, WITH AN ALKALI METAL SALT OF A POLYFLUORCO CARBINOL OF 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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |