Patent US2841628A successfully refreshed from Google Patents.
US2841628A
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Use of certain bis (2, 4-dialkylphenol) monosulfides in rubber as antiozonant and product obtained
Assignee: Bridgestone Firestone Inc
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Filing: 1953-12-24
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Granted: 1958-07-01
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Expires: 1973-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A LIGHT-COLORED SULFUR-VULCANIZED SHAPED NATURALRUBBER PRODUCT WHICH CONTAINS A SMALL AMOUNT OF A BIS(2-ALKYL-4-METHYLPHENOL) MONOSULFIDE SUFFICIENT TO INHIBIT OZONE DETERIORATION, IN WHICH THE 2-ALKYL GROUP CONTAINS THREE TO TWELVE CARBON ATOMS.
Claim 2
Dependent Claim
31 words
A LIGHT-COLORED SULFUR-VULCANIZED SHAPED NATURALRUBBER PRODUCT WHICH CONTAINS A SMALL AMOUNT OF A BIS(2-ALKYL-4-METHYLPHENOL) MONOSULFIDE SUFFICIENT TO INHIBIT OZONE DETERIORATION, IN WHICH THE 2-ALKYL GROUP CONTAINS THREE TO TWELVE CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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US2370756A
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US2726277A
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US2670383A
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US2700691A
Cited
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 |