Patent US2938898A successfully refreshed from Google Patents.
US2938898A
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US
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Process of reacting mono- and di-saccharides with various reagents in the presence of gamma-butyrolactone
Assignee: GAF Chemicals Corp
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Filing: 1958-03-04
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Granted: 1960-05-31
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Expires: 1978-03-04
Abstract
No abstract record available.
Inventors
- 👤 Werner Jesse
- 👤 Frederick A Hessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:26
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06; C07H15/00; C07H15/02; C07H15/04; C07H15/10; C07H5/00; C07H5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS OF REACTING AT LEAST ONE HYDROXY GROUP OF A CARBOHYDRATE SELECTED FROM THE GROUP CONSISTING OF FRUCTOSE, GLUCOSE AND SUCROSE WITH A REAGENT REACTIVE WITH SAID GROUP WHICH COMPRISES CONDUCTING THE REACTION IN THE PRESENCE OF V-BUTYROLACETONE IN WHICH THE SAID CARBOHYDRATE AND SAID REAGENT ARE SOLUBLE THEREIN.
Claim 2
Dependent Claim
50 words
THE PROCESS OF REACTING AT LEAST ONE HYDROXY GROUP OF A CARBOHYDRATE SELECTED FROM THE GROUP CONSISTING OF FRUCTOSE, GLUCOSE AND SUCROSE WITH A REAGENT REACTIVE WITH SAID GROUP WHICH COMPRISES CONDUCTING THE REACTION IN THE PRESENCE OF V-BUTYROLACETONE IN WHICH THE SAID CARBOHYDRATE AND SAID REAGENT ARE SOLUBLE THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |