Patent US2756240A successfully refreshed from Google Patents.
US2756240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-chlorodioxene
Assignee: Olin Corp
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Filing: 1954-10-26
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Granted: 1956-07-24
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Expires: 1974-10-26
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Astle
- 👤 William C Gergel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:12
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/10; C07D319/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
A PROCESS FOR PREPARING 2-CHLORODIOXENE WHICH COMPRISES HEATING 2,3-DICHLORODIOXANE TO A TEMPERATURE SUFFICIENT TO FORM HYDROGEN CHLORIDE AND 2-CHLORODIOXENE, SEPARATING HYDROGEN CHLORIDE EVOLVED, AND RECOVERING 2CHLORODIOXENE.
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |