US2500543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidant
Assignee: Griffith Laboratories Ltd
•
Filing: 1945-07-20
•
Granted: 1950-03-14
•
Expires: 1965-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/18; A23B11/40; A23B11/45; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/742; A23B2/754; A23B2/758; C; C11; C11B; C11B5/00; C11B5/0021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN ANTIOXIDANT COMPOSITION COMPRISING A SOLUTION OF AN ANTIOXIDANT ACID ESTER SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ASCORBIC AND GALLIC ACID, WHICH ESTER IS SOLUBLE IN PROPYLENE GLYCOL IN PROPYLENE GLYCOL.
Claim 2
Dependent Claim
33 words
AN ANTIOXIDANT COMPOSITION COMPRISING A SOLUTION OF AN ANTIOXIDANT ACID ESTER SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ASCORBIC AND GALLIC ACID, WHICH ESTER IS SOLUBLE IN PROPYLENE GLYCOL IN PROPYLENE GLYCOL.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |