US3276501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-skid tires
Assignee: Individual
•
Filing: 1964-12-04
•
Granted: 1966-10-04
•
Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Francis A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:03
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31623
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A TIRE HAVING A TREAD PORTION COMPRISING SAND GRANULES COATED WITH A MIXTURE OF DRIED GLUE AND PITCH BONDED INTO A HOMOGENEOUS MASS BY A VULCANIZED RUBBER MATRIX, WHEREIN SAID SAND IS PRESENT IN THE AMOUNT OF 5 TO 15 WEIGHT PERCENT OF SAID TREAD PORTION, SAID DRIED GLUE IS PRESENT IN THE AMOUNT OF 2.5 TO 7.5 WEIGHT PERCENT OF SAID TREAD PORTION AND SAID PITCH IS PRESENT IN THE AMOUNT OF 2.5 TO 7.5 WEIGHT PERCENT OF SAID TREAD PORTION.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |