US2848490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing dicarboxylic acids from ozonides of cycloolefins
Assignee: Shell Development Co
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Filing: 1955-10-25
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Granted: 1958-08-19
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Expires: 1975-10-25
Abstract
No abstract record available.
Inventors
- 👤 Niebling Karl Friedri Johannes
- 👤 Rumscheidt Gottfried Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:27
CPC Classifications
C; C07; C07C; C07C55/00; C07C55/02; C07C51/00; C07C51/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR THE PRODUCTION OF ALIPHATIC DICARBOXYLIC ACIDS WHICH COMPRISES REACTING AN OZONIDE OF A CYCLIC OLEFIN OF UP TO 30 CARBON ATOMS IN WHICH EACH OF THE OLEFINICALLY UNSATURATED CARBON ATOMS IS BONDED TO EACH OF TWO OTHER CARBON ATOMS OF THE RING AND TO A HYDROGEN ATOM, WITH MOLECULAR OXYGEN IN THE PRESENCE OF WATER AND AT LEAST ONE POLYVALENT METAL COMPOUND WHEREIN THE METAL HAS AN ATOMIC NUMBER OF FROM ABOUT 23 TO ABOUT 82 AS CATALYST, SAID REACTION BEING CARRIED OUT IN LIQUID PHASE UNDER NEUTRAL CONDITIONS AT A TEMPERATURE ABOVE ABOUT 40*C.
Claim 2
Dependent Claim
98 words
A PROCESS FOR THE PRODUCTION OF ALIPHATIC DICARBOXYLIC ACIDS WHICH COMPRISES REACTING AN OZONIDE OF A CYCLIC OLEFIN OF UP TO 30 CARBON ATOMS IN WHICH EACH OF THE OLEFINICALLY UNSATURATED CARBON ATOMS IS BONDED TO EACH OF TWO OTHER CARBON ATOMS OF THE RING AND TO A HYDROGEN ATOM, WITH MOLECULAR OXYGEN IN THE PRESENCE OF WATER AND AT LEAST ONE POLYVALENT METAL COMPOUND WHEREIN THE METAL HAS AN ATOMIC NUMBER OF FROM ABOUT 23 TO ABOUT 82 AS CATALYST, SAID REACTION BEING CARRIED OUT IN LIQUID PHASE UNDER NEUTRAL CONDITIONS AT A TEMPERATURE ABOVE ABOUT 40*C.
References Cited (Backward Citations)
DE868148C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |