US2668180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aryldialkyl peroxides
Assignee: Hercules Powder Co
•
Filing: 1950-07-01
•
Granted: 1954-02-02
•
Expires: 1970-07-01
Abstract
No abstract record available.
Inventors
- 👤 Boardman Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
THE METHOD OF PREPARING A PEROXIDE OF THE FORMULA
Claim 2
Independent Claim
9 words
THE METHOD OF PREPARING A PEROXIDE OF THE FORMULA
References Cited (Backward Citations)
US2403771A
Cited
US2403772A
Cited
US2548435A
Cited
GB626095A
Cited
US2508256A
Cited
US2522016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |