US2533189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrazo esters
Assignee: Wingfoot Corp
•
Filing: 1946-01-16
•
Granted: 1950-12-05
•
Expires: 1966-01-16
Abstract
No abstract record available.
Inventors
- 👤 Paul J Flory
- 👤 Rabjohn Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
C; C10; C10M; C10M115/00; C10M115/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AS A NEW COMPOSITION THE COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
10 words
AS A NEW COMPOSITION THE COMPOUND HAVING THE STRUCTURAL FORMULA
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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |