Patent US2560028A successfully refreshed from Google Patents.
US2560028A
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Nondiscoloring antioxidants for natural rubber and synthetic rubbers
Assignee: Bridgestone Firestone Inc
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Filing: 1947-08-06
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Granted: 1951-07-10
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Expires: 1967-08-06
Abstract
No abstract record available.
Inventors
- 👤 Leland J Kitchen
- 👤 Joseph C Ambelang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A COMPOSITION CONTAINING RUBBER MATERIAL FROM THE GROUP CONSISTING OF NATURAL RUBBER AND RUBBER COPOLYMER OF BUTADIENE AND ACRYLONITRILE, SAID MATERIAL BEING STABILIZED WITH A SMALL AMOUNT OF A 2-OCTYL-4-METHYLPHENOL.
References Cited (Backward Citations)
USRE20337E
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US2335089A
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US2356929A
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US2351347A
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US2370756A
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US2471887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |