US2926174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation of aromatic carboxylic acids with carbohydrates and related materials
Assignee: Universal Oil Products Co
•
Filing: 1957-06-18
•
Granted: 1960-02-23
•
Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Carl B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:14
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS WHICH COMPRISES REACTING AN AROMATIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBON CARBOXYLIC ACIDS AND HALO, NITRO, HYDROXY, AMINO AND METHOXY SUBSTITUTED AROMATIC HYDROCARBON CARBOXYLIC ACIDS WITH A CARBOHYDRATE SELECTED FROM THE GRROUP CONSISTING OF MONOSACCHARIDES, OLIGOSACCHARIDES, AND POLYSACCHARIDES, IN THE PRESENCE OF HYDROGEN FLUORIDE CATALYST AT A TEMPERATURE OF FROM ABOUT -40*C. TO ABOUT 100*C.
Claim 2
Dependent Claim
61 words
A PROCESS WHICH COMPRISES REACTING AN AROMATIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBON CARBOXYLIC ACIDS AND HALO, NITRO, HYDROXY, AMINO AND METHOXY SUBSTITUTED AROMATIC HYDROCARBON CARBOXYLIC ACIDS WITH A CARBOHYDRATE SELECTED FROM THE GRROUP CONSISTING OF MONOSACCHARIDES, OLIGOSACCHARIDES, AND POLYSACCHARIDES, IN THE PRESENCE OF HYDROGEN FLUORIDE CATALYST AT A TEMPERATURE OF FROM ABOUT -40*C. TO ABOUT 100*C.
References Cited (Backward Citations)
US2252725A
Cited
US2798079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |