Patent US2683151A successfully refreshed from Google Patents.
US2683151A
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Process for reacting a diolefin and a furfuraldehyde and resulting products
Assignee: Phillips Petroleum Co
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Filing: 1949-03-14
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Granted: 1954-07-06
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Expires: 1969-03-14
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Daniel A Nicewander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:39
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
2,3,4,5- BIS ($2-BUTENYLENE) -TETRAHYDROFURFURAL SUBSTANTIALLY FREE FROM OTHER COMPOUNDS FORMED DURING ITS PREPARATION.
Claim 2
Dependent Claim
13 words
2,3,4,5- BIS ($2-BUTENYLENE) -TETRAHYDROFURFURAL SUBSTANTIALLY FREE FROM OTHER COMPOUNDS FORMED DURING ITS PREPARATION.
References Cited (Backward Citations)
US1933715A
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US2350609A
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US2411785A
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US2372688A
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US2494325A
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US2485070A
Cited
US2428120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |