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US3274267A
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Cyclic alpha-perfluoro-di-p-xylylenes
Assignee: Union Carbide Corp
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Filing: 1963-09-23
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Granted: 1966-09-20
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Chow Sui-Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:25
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206; C07C17/18; C07C17/26; C07C17/263; C07C317/00; C07C317/02; C07C317/10; C07C323/00; C07C323/01; C07C323/02; C07C323/07; C08; C08G; C08G61/00; C08G61/02; C08G61/025; C08G2261/00; C08G2261/30; C08G2261/34; C08G2261/342; C08G2261/3424
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
PROCESS FOR THE PREPARATION OF CYCLIC A-PERFLUORO-DIP-XYLYLENES HAVING THE STRUCTURE:
Claim 2
Dependent Claim
10 words
PROCESS FOR THE PREPARATION OF CYCLIC A-PERFLUORO-DIP-XYLYLENES HAVING THE STRUCTURE:
Claim 3
Dependent Claim
5 words
CYCLIC A-PERFLUORO-DI-P-XYLYLENE HAVING THE STRUCTURE
Claim 4
Dependent Claim
5 words
CYCLIC A-PERFLUORO-DI-P-XYLYLENE HAVING THE STRUCTURE
References Cited (Backward Citations)
DE1085673B
Cited
US3185743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |