Patent US2840457A successfully refreshed from Google Patents.
US2840457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of disulfur decafluoride
Assignee: Individual
•
Filing: 1945-06-01
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Granted: 1958-06-24
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Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Anton B Burg
- 👤 Norman R Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:42
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/45; C01B17/4561
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE METHOD OF PREPARING DISULFUR DECAFLUORIDE WHICH COMPRISES CONTACTING FLUORINE WITH SOLID SULFUR AT A SUITABLY CONTROLLED RATE WHILE MAINTAING THE TEMPERATURE OF THE SULFUR BELOW ITS MELTING POINT.
Claim 2
Independent Claim
29 words
THE METHOD OF PREPARING DISULFUR DECAFLUORIDE WHICH COMPRISES CONTACTING FLUORINE WITH SOLID SULFUR AT A SUITABLY CONTROLLED RATE WHILE MAINTAING THE TEMPERATURE OF THE SULFUR BELOW ITS MELTING POINT.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |