Patent US2978404A successfully refreshed from Google Patents.
US2978404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative sweetening with alkaline material and partial ester of polyhydric alcohol
Assignee: Sunoco Inc
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Filing: 1959-06-18
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Granted: 1961-04-04
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Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 Rolland G Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:40
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN A PROCESS FOR SWEETENING HYDROCARBONS WHICH COMPRISES CONTACTING SOUR HYDROCARBONS WITH OXYGEN IN THE PRESENCE OF AN ALKALINE CATALYST, THE IMPROVEMENT WHICH COMPRISES INCREASING THE SWEETENING RATE BY INCORPORATING IN THE REACTION MIXTURE A PARTIAL ESTER OF A POLYHYDRIC ALCOHOL.
Claim 2
Dependent Claim
41 words
IN A PROCESS FOR SWEETENING HYDROCARBONS WHICH COMPRISES CONTACTING SOUR HYDROCARBONS WITH OXYGEN IN THE PRESENCE OF AN ALKALINE CATALYST, THE IMPROVEMENT WHICH COMPRISES INCREASING THE SWEETENING RATE BY INCORPORATING IN THE REACTION MIXTURE A PARTIAL ESTER OF A POLYHYDRIC ALCOHOL.
References Cited (Backward Citations)
US2616831A
Cited
US2891002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |