US2581919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic hydroxy sulfides
Assignee: Bridgestone Firestone Inc
•
Filing: 1946-01-26
•
Granted: 1952-01-08
•
Expires: 1966-01-26
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
C; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
DI(4,6-DI-TERTIARY-BUTYL - META - CRESOL) SULFIDES.
Claim 2
Dependent Claim
6 words
DI(4,6-DI-TERTIARY-BUTYL - META - CRESOL) SULFIDES.
References Cited (Backward Citations)
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US2256441A
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US2256443A
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US2270183A
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US2379756A
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US2364338A
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US2381854A
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US2409687A
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US2402448A
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US2449026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |