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Patent US3449318A successfully refreshed from Google Patents.
US3449318A
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US
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Hydroxyalkylation of (a) polyhydric alcohols using hydrogen fluoride catalyst and (b) dextrose
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1966-11-21
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Granted: 1969-06-10
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Claris D Roth
- 👤 Robert G Short
- 👤 Charles S Nevin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4875; C08G18/4879; C08G18/4883; C08G18/67; C08G18/6795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2956963A
Cited
US2900268A
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US3202620A
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US3305535A
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US3265641A
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US3277076A
Cited
US3324108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |