US3228966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimethyl furan production from mesityl oxide
Assignee: Shell USA Inc
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Filing: 1963-11-12
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Granted: 1966-01-11
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles R Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1815; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J27/02; B01J27/04; B01J27/047; B01J27/185; B01J27/1853; C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR PRODUCING DIMETHYL FURAN WHICH COMPRISES HEATING A MIXTURE OF MESITYL OXIDE AND OXYGEN OR SULFUR DIOXIDE TO A TEMPERATURE ABOVE ABOUT 300*C. IN THE PRESENCE OF A CATALYST MATERIAL WHICH IS (A) THE OXIDE OF THE FORMULA
Claim 2
Dependent Claim
40 words
A PROCESS FOR PRODUCING DIMETHYL FURAN WHICH COMPRISES HEATING A MIXTURE OF MESITYL OXIDE AND OXYGEN OR SULFUR DIOXIDE TO A TEMPERATURE ABOVE ABOUT 300*C. IN THE PRESENCE OF A CATALYST MATERIAL WHICH IS (A) THE OXIDE 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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |