US3269928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroaromatic compounds
Assignee: Pennwalt Corp
•
Filing: 1962-04-05
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Granted: 1966-08-30
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Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Robert N Haszeldine
- 👤 John M Birchall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/35; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF PREPARING A FLUORINATED ARYL SUBSTITUTED FLUOROSILANE WHICH COMPRISES REACTING IN THE PRESENCE OF A FREE RADICAL INITIATOR, A HIGHLY FLUORINATED AROMATIC COMPOUND CONTAINING 6 TO 12 CARBON ATOMS AND CONTAINING AT LEAST 4 FLURINE ATOMS ATTACHED TO THE NUCLEUS OF THE AROMATIC RING WITH A SILANE HAVING THE STRUCCLEUS OF THE AROMATIC RING WITH A SILANE HAVING THE STRUCSISTING OF HYDROGEN, FLUORINE, ALKYL ARYL, FLUOROALKYL AND FLUOROARYL RADICALS AND N IS A NUMBER FROM 0 TO 2.
Claim 2
Dependent Claim
80 words
THE PROCESS OF PREPARING A FLUORINATED ARYL SUBSTITUTED FLUOROSILANE WHICH COMPRISES REACTING IN THE PRESENCE OF A FREE RADICAL INITIATOR, A HIGHLY FLUORINATED AROMATIC COMPOUND CONTAINING 6 TO 12 CARBON ATOMS AND CONTAINING AT LEAST 4 FLURINE ATOMS ATTACHED TO THE NUCLEUS OF THE AROMATIC RING WITH A SILANE HAVING THE STRUCCLEUS OF THE AROMATIC RING WITH A SILANE HAVING THE STRUCSISTING OF HYDROGEN, FLUORINE, ALKYL ARYL, FLUOROALKYL AND FLUOROARYL RADICALS AND N IS A NUMBER FROM 0 TO 2.
References Cited (Backward Citations)
CA534818A
Cited
US2511820A
Cited
US2598436A
Cited
US2636896A
Cited
GB706703A
Cited
US2929830A
Cited
FR1205608A
Cited
US3004077A
Cited
US3000976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |