US2841619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thio-bis dialkylphenols
Assignee: Bridgestone Firestone Inc
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Filing: 1957-12-05
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Granted: 1958-07-01
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:31
CPC Classifications
C; C07; C07C; C07C323/00; C07C37/00; C07C37/11; C07C37/14; C07C37/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
THIO-BIS-DIALKYL PHENOLS OF THE CLASS CONSISTING OF THIO-BIS(2-ALKYL-4-METHYLPHENOLS) IN WHICH THE ALKYL GROUP CONTAINS 4 TO 12 CARBONS ATOMS AND IS FROM THE CLASS WHICH CONSISTS OF SECONDARY AND TERTIARY ALKYL GROUPS.
Claim 2
Dependent Claim
32 words
THIO-BIS-DIALKYL PHENOLS OF THE CLASS CONSISTING OF THIO-BIS(2-ALKYL-4-METHYLPHENOLS) IN WHICH THE ALKYL GROUP CONTAINS 4 TO 12 CARBONS ATOMS AND IS FROM THE CLASS WHICH CONSISTS OF SECONDARY AND TERTIARY ALKYL GROUPS.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |