US2732360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber compositions containing a silica
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:44
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A VULCANIZED COMPOSITION CONTAINING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SILICONE RUBBER AND AS A FILLER A PRECIPITATED SILICA WITH A 2 TO 20% WATER CONTENT AND A 1 TO 10% ALKALI METAL OXIDE CONTENT, THE QUANTITY OF SAID FILLER BEING 30 TO 60 PARTS BY WEIGHT OF THE RUBBER.
Claim 2
Dependent Claim
55 words
A VULCANIZED COMPOSITION CONTAINING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SILICONE RUBBER AND AS A FILLER A PRECIPITATED SILICA WITH A 2 TO 20% WATER CONTENT AND A 1 TO 10% ALKALI METAL OXIDE CONTENT, THE QUANTITY OF SAID FILLER BEING 30 TO 60 PARTS BY WEIGHT OF THE RUBBER.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |