US2500858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber composition and method of producing
Assignee: VALLEV IND Inc
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Filing: 1947-06-05
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Granted: 1950-03-14
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Expires: 1967-06-05
Abstract
No abstract record available.
Inventors
- 👤 Clifford B Pape
- 👤 Sweetman John Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:39
CPC Classifications
C; C08; C08L; C08L21/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A RUBBER COMPOSITION CONTAINING 2% TO 15% OF A SOAPY WAXY MATERIAL OBTAINED BY OXIDIZING AND POLYMERIZING OLEIC ACID IN ADMIXTURE WITH A SULFONATED VEGETABLE OIL AND AN OXIDE OF A METAL OF THE THIRD PERIOD OF THE SECOND GROUP OF THE PERIODIC SYSTEM, THE PROPORTION OF THE OLEIC ACID TO SULFONATED VEGETABLE OIL BEING BETWEEN 1:1 AND 1:3 AND THE QUANTITY OF METAL OXIDE BEING BETWEEN 9% AND 40% OF THE OLEIC ACID AND SULFONATED VEGETABLE OIL.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |