Patent US3206284A successfully refreshed from Google Patents.
US3206284A
Expired / Lapsed
US
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Synthesis of difluorodiazine
Assignee: EIDP Inc
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Filing: 1962-03-09
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Granted: 1965-09-14
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Cleaver Charles Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:55
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/083; C01B21/0832
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR PREPARING DIFLUORODIAZINE THE STEPS WHICH COMPRISE CONTACTING FLUORINE AND A MIXTURE OF A METAL AZIDE WHICH IS STABLE AT TEMPERATURES UP TO 100* C., WHICH METAL IS SELECTED FROM THE GROUP CONSISTING OF GROUPS IA AND IIA OF THE PERIODIC CHART OF ELEMENTS, AND A DILUENT AT A TEMPERATURE FROM -25*C. TO 100*C. AND COLLECTING THE DIFLUORODIAZINE.
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR PREPARING DIFLUORODIAZINE THE STEPS WHICH COMPRISE CONTACTING FLUORINE AND A MIXTURE OF A METAL AZIDE WHICH IS STABLE AT TEMPERATURES UP TO 100* C., WHICH METAL IS SELECTED FROM THE GROUP CONSISTING OF GROUPS IA AND IIA OF THE PERIODIC CHART OF ELEMENTS, AND A DILUENT AT A TEMPERATURE FROM -25*C. TO 100*C. AND COLLECTING THE DIFLUORODIAZINE.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |