Patent US3030385A successfully refreshed from Google Patents.
US3030385A
Expired / Lapsed
US
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4, 4-dihalotetrahydropyrans
Assignee: Union Carbide Corp
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Filing: 1959-12-16
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Granted: 1962-04-17
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Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Marcus Erich
- 👤 John T Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:11
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/08; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A METHOD FOR PRODUCING 4,4-DIHALOTETRAHYDROPYRANS OF THE FORMULA
Claim 2
Independent Claim
8 words
A METHOD FOR PRODUCING 4,4-DIHALOTETRAHYDROPYRANS 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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |