Patent US3304350A successfully refreshed from Google Patents.
US3304350A
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Preparation of polyfluoroalkyl phosphonitrilates
Assignee: Olin Corp
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Filing: 1964-04-01
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Granted: 1967-02-14
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Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ehrenfried H Kober
- 👤 Henry F Lederle
- 👤 Gerhard F Ottmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:12
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C08; C08G; C08G79/00; C08G79/02; C08G79/025; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043; C10M2225/00; C10M2225/02; C10N; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD FOR THE PREPARATION OF A POLYFLUOROALKYL PHOSPHONITRILATE WHICH COMPRISES REACTING A PHOSPHONITRILIC CHLORIDE OF THE FORMULA:
Claim 2
Independent Claim
18 words
A METHOD FOR THE PREPARATION OF A POLYFLUOROALKYL PHOSPHONITRILATE WHICH COMPRISES REACTING A PHOSPHONITRILIC CHLORIDE OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |