US2601224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of difunctional compounds
Assignee: EIDP Inc
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Filing: 1951-01-05
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Granted: 1952-06-24
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Expires: 1971-01-05
Abstract
No abstract record available.
Inventors
- 👤 Milton J Roedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:32
CPC Classifications
C; C07; C07C; C07C55/00; C07C55/02; C07C45/00; C07C45/51; C07C45/517; C07C51/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A PROCESS WHICH COMPRISES HEATING, AT A TEMPERATURE ABOVE ITS DECOMPOSITION TEMPERATURE AND IN THE SUBSTANTIA6 ABSENCE OF OXYGEN, A DICYCLIC PEROXIDE COMPOUND CONTAINING TWO CYCLIC STRUCTURES, EACH OF WHICH CONTAINS FROM 4 TO 10 CARBON ATOMS IN THE PRIMARY RING, SAID CYCLIC STRUCTURES BEING DIRECTLY UNITED TO EACH OTHER THROUGH AN OXYGEN-OXYGEN BRIDGE AND CONTAINING ON THE SAME CYCLIC CARBON ATOMS AS THE PEROXYGEN LINKAGE A FUNCTIONAL GROUP, AND SEPARATING FROM THE RESULTING REACTION MIXTURE A STRAIGHTCHAIN DIFUNCTIONAL COMPOUND CONTAINING THE SAME NUMBER OF CARBON ATOMS AS THE ORIGINAL DICYCLIC PEROXIDE AND IN WHICH THE TWO FUNCTIONAL GROUPS ARE THE SAME AS THE FUNCTIONAL GROUPS ON SAID ORIGINAL PEROXIDE COMPOUND.
References Cited (Backward Citations)
US2298405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |