US2567569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluorination of hydrocarbons with lead tetrafluoride
Assignee: Purdue Research Foundation
•
Filing: 1944-12-19
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Granted: 1951-09-11
•
Expires: 1964-12-19
Abstract
No abstract record available.
Inventors
- 👤 Earl T Mcbee
- 👤 Robb Richard Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:02
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/02; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE PROCESS WHICH INCLUDES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKANES AND ALKENES WITH LEAD TETRAFLUORIDE AT A TEMPERATURES IN THE RANGE BETWEEN ABOUT FIFTY DEGREES CENTIGRADE AND THAT TEMPERATURE AT WHICH SUBSTANTIAL DECOMPOSITION OF THE ORGANIC REACTANT OCCURS, FOR A PERIOD OF TIME SUFFICIENT TO CONVERT AT LEAST A PORTION OF THE STARTING ORGANIC COMPOUND TO A PERFLUOROPARAFFIN.
Claim 2
Dependent Claim
62 words
THE PROCESS WHICH INCLUDES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKANES AND ALKENES WITH LEAD TETRAFLUORIDE AT A TEMPERATURES IN THE RANGE BETWEEN ABOUT FIFTY DEGREES CENTIGRADE AND THAT TEMPERATURE AT WHICH SUBSTANTIAL DECOMPOSITION OF THE ORGANIC REACTANT OCCURS, FOR A PERIOD OF TIME SUFFICIENT TO CONVERT AT LEAST A PORTION OF THE STARTING ORGANIC COMPOUND TO A PERFLUOROPARAFFIN.
References Cited (Backward Citations)
GB214293A
Cited
US1914135A
Cited
US2024008A
Cited
US2004932A
Cited
GB429591A
Cited
US2013035A
Cited
FR786123A
Cited
US2062743A
Cited
US2220713A
Cited
US2192143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |