US2676145A
Expired / Lapsed
US
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Gaseous polymerization by electrical discharge
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-09-01
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Granted: 1954-04-20
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Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 Paul B Weisz
- 👤 Robert D Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:19
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; C; C07; C07C; C07C17/00; C07C17/26; C08; C08F; C08F2/00; C08F2/46; C08F2/52; Y; Y10; Y10S; Y10S264/00; Y10S264/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE PROCESS FOR CONVERTING PERFLUORO ETHYLENE TO PERFLUOROCARBONS OF GREATER CARBON CONTENT WHICH COMPRISES SUBJECTING GASEOUS PERFLUORO ETHYLENE TO THE ACTION OF AN ELECTRICAL DISCHARGE CHARACTERIZED BY A GAS TEMPERATURE SUBSTANTIALLY LOWER THAN 1000* C.
Claim 2
Dependent Claim
35 words
THE PROCESS FOR CONVERTING PERFLUORO ETHYLENE TO PERFLUOROCARBONS OF GREATER CARBON CONTENT WHICH COMPRISES SUBJECTING GASEOUS PERFLUORO ETHYLENE TO THE ACTION OF AN ELECTRICAL DISCHARGE CHARACTERIZED BY A GAS TEMPERATURE SUBSTANTIALLY LOWER THAN 1000* C.
References Cited (Backward Citations)
GB130608A
Cited
US1710155A
Cited
US2023637A
Cited
US2257177A
Cited
US2393967A
Cited
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Cited
US2500218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |