Patent US3917700A successfully refreshed from Google Patents.
US3917700A
Expired / Lapsed
US
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Nitrone compounds
Assignee: Goodyear Tire and Rubber Co
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Filing: 1974-01-30
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Granted: 1975-11-04
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Expires: 1994-01-30
Abstract
Abstract Compositions of matter corresponding to the general formula WHEREIN R is selected from a group consisting of alkyl radicals, cycloalkyl radicals, phenyl radicals and substituted phenyl radicals.
Inventors
- 👤 Melvin Auerbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:32
CPC Classifications
C; C07; C07C; C07C291/00; C07C291/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
THE COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-NAPHTHYL NI TRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-PHENYL NITRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-CYCLOHEXYL NITRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-(3-ETHYLPHENYL)NITRONE, AND 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-TOLYL NITRONE.
Claim 2
Dependent Claim
21 words
THE COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-NAPHTHYL NI TRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-PHENYL NITRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-CYCLOHEXYL NITRONE, 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-(3-ETHYLPHENYL)NITRONE, AND 1-(3,5-DI-T-BUTYL-4-HYDROXYPHENYL)-N-TOLYL NITRONE.
References Cited (Backward Citations)
US3225099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |