Patent US1264473A successfully refreshed from Google Patents.
US2980495A
Expired / Lapsed
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Method of preparing polymeric phosphonitrilic fluoride
Assignee: Olin Corp
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Filing: 1957-09-23
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Granted: 1961-04-18
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Expires: 1977-09-23
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
2026-11-07 07:35
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/097; C01B21/098; C01B21/0983
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF PREPARING POLYMERIC PHOSPHONITRILIC FLUORIDES WHICH COMPRISES ADMIXING POLYMERIC PHOSPHONITRILE CHLORIDE WITH SILVER MONOFLUORIDE TO FORM POLYMERIC PHOSPHONITRILIC CHLOROFLUORIDE, SEPARATING THE SAID CHLOROFLUORIDE AND ADMIXING SAID CHLOROFLUORIDE WITH A SILVER FLUORIDE SELECTED FROM SILVER MONOFLUORIDE AND SILVER DIFLUORIDE TO PRODUCE THE POLYMERIC PHOSPHONITRILIC FLUORIDES, SAID POLYMERIC PHOSPHONITRILIC CHLORIDE AND SILVER MONOFLUORIDE BEING ADMIXED AT A TEMPERATURE OF ABOUT 80 TO 150*C. AND IN PROPORTIONS OF ABOUT 1.33 TO 3.5 MOLES OF SILVER MONOFLUORIDE PER PCL2 GROUP AND FOR A TIME OF ABOUT 2 TO 6 HOURS.
Claim 2
Independent Claim
88 words
THE METHOD OF PREPARING POLYMERIC PHOSPHONITRILIC FLUORIDES WHICH COMPRISES ADMIXING POLYMERIC PHOSPHONITRILE CHLORIDE WITH SILVER MONOFLUORIDE TO FORM POLYMERIC PHOSPHONITRILIC CHLOROFLUORIDE, SEPARATING THE SAID CHLOROFLUORIDE AND ADMIXING SAID CHLOROFLUORIDE WITH A SILVER FLUORIDE SELECTED FROM SILVER MONOFLUORIDE AND SILVER DIFLUORIDE TO PRODUCE THE POLYMERIC PHOSPHONITRILIC FLUORIDES, SAID POLYMERIC PHOSPHONITRILIC CHLORIDE AND SILVER MONOFLUORIDE BEING ADMIXED AT A TEMPERATURE OF ABOUT 80 TO 150*C. AND IN PROPORTIONS OF ABOUT 1.33 TO 3.5 MOLES OF SILVER MONOFLUORIDE PER PCL2 GROUP AND FOR A TIME OF ABOUT 2 TO 6 HOURS.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |