US2900357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil extended gr-s rubber having unusual low temperature retraction characteristics
Assignee: Pure Oil Co
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Filing: 1953-09-02
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Granted: 1959-08-18
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Expires: 1973-09-02
Abstract
No abstract record available.
Inventors
- 👤 George W Ayers
- 👤 Norman D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN IMPROVED VULCANIZABLE RUBBER COMPOSITION COMPRISING A SYNTHETIC HYDROCARBON POLYMER RUBBER HAVING PERMANETLY INCORPORATED THEREIN A RUBBER EXTENDING AMOUNT OF A MINERAL OIL CONSISTING OF THE RAFFINATE PHASE OBTAINED IN THE SOLVENT EXTRACTION OF A PETROLEUM FRACTION BOILING IN THE LUBRICATING OIL BOILING RANGE AND OBTAINED FROM A PARAFFINIC BASE CRUDE, SAID MINERAL OIL CONSISTING ESSENTIALLY OF A PREDOMINAT PROPORTION OF ASTURATES AND A MINOR PROPORTION OF SECOND ACIDIFINS BY ROSTLER ANALYSIS HAVING AN AVERAGE VISCOSITY OF 30-150 SUS AT 210* F., AND BEING PRESENT IN SAID COMPOSITION IN AN AMOUNT SUFFICIENT TO IMPROVE SUBSTANTIALLY THE LOW TEMPERATURE RETRACTION CHARACTERISTICS OF THE RUBBER PRODUCED UPON VULCANIZATION OF THE COMPOSITION.
Claim 2
Dependent Claim
109 words
AN IMPROVED VULCANIZABLE RUBBER COMPOSITION COMPRISING A SYNTHETIC HYDROCARBON POLYMER RUBBER HAVING PERMANETLY INCORPORATED THEREIN A RUBBER EXTENDING AMOUNT OF A MINERAL OIL CONSISTING OF THE RAFFINATE PHASE OBTAINED IN THE SOLVENT EXTRACTION OF A PETROLEUM FRACTION BOILING IN THE LUBRICATING OIL BOILING RANGE AND OBTAINED FROM A PARAFFINIC BASE CRUDE, SAID MINERAL OIL CONSISTING ESSENTIALLY OF A PREDOMINAT PROPORTION OF ASTURATES AND A MINOR PROPORTION OF SECOND ACIDIFINS BY ROSTLER ANALYSIS HAVING AN AVERAGE VISCOSITY OF 30-150 SUS AT 210* F., AND BEING PRESENT IN SAID COMPOSITION IN AN AMOUNT SUFFICIENT TO IMPROVE SUBSTANTIALLY THE LOW TEMPERATURE RETRACTION CHARACTERISTICS OF THE RUBBER PRODUCED UPON VULCANIZATION OF THE COMPOSITION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |