US2683694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidant composition
Assignee: Universal Oil Products Co
•
Filing: 1950-08-16
•
Granted: 1954-07-13
•
Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hoffman
- 👤 Joseph A Chenicek
- 👤 Harry E Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:40
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ANTIOXIDANT COMPOSITION IN THE FORM OF SOLID PARTICLES, EACH OF SAID PARTICLES COMPRISING FROM ABOUT 50% TO ABOUT 90% BY WEIGHT OF BUTYLATED HYDROXYANISOLE AND FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF PROPYL GALLATE.
Claim 2
Dependent Claim
37 words
AN ANTIOXIDANT COMPOSITION IN THE FORM OF SOLID PARTICLES, EACH OF SAID PARTICLES COMPRISING FROM ABOUT 50% TO ABOUT 90% BY WEIGHT OF BUTYLATED HYDROXYANISOLE AND FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF PROPYL GALLATE.
References Cited (Backward Citations)
US2511802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |