Patent US2813127A successfully refreshed from Google Patents.
US2813127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diperoxides
Assignee: Shell Development Co
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Filing: 1956-04-19
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Granted: 1957-11-12
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Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Ellis R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/16; C08; C08F; C08F4/00; C08F4/28; C08F4/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
15 words
A DITERTIARY PEROXIDE OF BIS-(METHYL)TETRAHYDROCARBON SUBSTITUTED BENZENE, THE PEROXIDE RADICALS LINKED TO THE METHYLENE RADICALS.
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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |