US2741295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a tubeless tire
Assignee: Uniroyal Inc
•
Filing: 1953-08-27
•
Granted: 1956-04-10
•
Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kindle
- 👤 John J Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; B; B60; B60C; B60C1/00; B60C1/0008; C08F; C08F8/00; C08F8/30; C08L; C08L21/00; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; Y; Y10; Y10S; Y10S152/00; Y10S152/16; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF MAKING A TUBELESS TIRE COMPRISING IN COMBINATION THE STEPS OF CHEMICALLY MODIFYING A RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS BY MASTICATING 100 PARTS OF SAID RUBBERY COPOLYMER WITH FROM 0.08 TO 0.05 PART OF SAID RUBBENZENE FOR FROM 3 MINUTES AT 400*F. TO 60 MINUTES AT 300*F., TO YIELD AND ESSENTIALLY UNCURED, PROCESSIBLE, SHEETFORMING, UNSATURATED, VULCANIZABLE MATERIAL, MIXING FROM 40 TO 75% BY WEIGHT OF THE THUS-MODIFIED COPOLYMER WITH
Claim 2
Independent Claim
94 words
A METHOD OF MAKING A TUBELESS TIRE COMPRISING IN COMBINATION THE STEPS OF CHEMICALLY MODIFYING A RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS BY MASTICATING 100 PARTS OF SAID RUBBERY COPOLYMER WITH FROM 0.08 TO 0.05 PART OF SAID RUBBENZENE FOR FROM 3 MINUTES AT 400*F. TO 60 MINUTES AT 300*F., TO YIELD AND ESSENTIALLY UNCURED, PROCESSIBLE, SHEETFORMING, UNSATURATED, VULCANIZABLE MATERIAL, MIXING FROM 40 TO 75% BY WEIGHT OF THE THUS-MODIFIED COPOLYMER WITH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |