US2852484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for compounding silicone gum, silica, and a dihydric alcohol and product obtained
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-09-07
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Granted: 1958-09-16
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Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 New Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:34
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/10; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08K; C08K3/00; C08K3/34; C08K3/36; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOUNDED SILICONE RUBBER COMPRISING A SILICONE GUM, 20 TO 50 PARTS SILCA HAVING A PARTICLE SIZE OF UP TO THE ORDER OF 25 MILLIMICRONS AND A SPECIFIC SURFACE OF THE ORDER OF AT LEAST 150 SQUARE METRES PER GRAM PER 100 PARTS OF THE SILICONE GUM AND 1 TO 10% ON THE COMPOUNDED SILICONE GUM OF AN ADDITIVE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
63 words
A COMPOUNDED SILICONE RUBBER COMPRISING A SILICONE GUM, 20 TO 50 PARTS SILCA HAVING A PARTICLE SIZE OF UP TO THE ORDER OF 25 MILLIMICRONS AND A SPECIFIC SURFACE OF THE ORDER OF AT LEAST 150 SQUARE METRES PER GRAM PER 100 PARTS OF THE SILICONE GUM AND 1 TO 10% ON THE COMPOUNDED SILICONE GUM OF AN ADDITIVE OF THE GENERAL FORMULA
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |