US2664448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of aromatic hydrocarbons
Assignee: Hercules Powder Co
•
Filing: 1948-06-05
•
Granted: 1953-12-29
•
Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Lorand
- 👤 John E Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:10
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C407/00; C07C409/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
THE PROCESS OF PREPARING A SUBSTANTIAL YIELD OF A TERTIARY HYDROPEROXIDE HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
15 words
THE PROCESS OF PREPARING A SUBSTANTIAL YIELD OF A TERTIARY HYDROPEROXIDE 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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |