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US3518310A
Expired / Lapsed
US
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Preparation of beta-hydroxypropionaldehyde and beta-alkoxypropionaldehydes
Assignee: Shell USA Inc
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Filing: 1968-02-09
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Granted: 1970-06-30
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Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:53
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/02; C07C47/198; C07C45/00; C07C45/61; C07C45/64; C07C45/67; C07C45/68; C07C45/70; C07C45/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2434110A
Cited
DE1224297B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |