Patent US2918479A successfully refreshed from Google Patents.
US2918479A
Expired / Lapsed
US
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Halogenated cyclic ethers
Assignee: Velsicol Chemical LLC
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Filing: 1958-03-26
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Granted: 1959-12-22
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Expires: 1978-03-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Seffl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:59
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOSITION OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOSITION OF THE FORMULA
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |