Patent US1344032A successfully refreshed from Google Patents.
Patent US2760941A successfully refreshed from Google Patents.
US2760941A
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Elastomer foam containing colloidal silica
Assignee: EIDP Inc
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Filing: 1953-09-09
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Granted: 1956-08-28
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Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:44
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08L; C08L21/00; C08J2321/00; Y; Y10; Y10S; Y10S521/00; Y10S521/908; Y10S521/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A COMPOSITION COMPRISING A SOLID MATRIX OF A WATERINSOLUBLE ORGANIC ELASTOMER FOAM HAVING A MOLECULAR WEIGHT GREATER THAN 10,000, SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, CHLORINATED RUBBER, AND COPOLYMERS OF CONJUGATED DIENES IN WHICH THERE HAS BEEN DISPERSED AN ALKALI-STABILIZED COLLOIDAL SILICIA HAVING AN AVERAGE ULTIMATE PARTICLE SIZE OF ABOUT 0.01 TO 0.03 MICRON, THE ALKALI BEING SUBSTANTIALLY ALL OUTSIDE OF THE SILICA PARTICLES.
Claim 2
Dependent Claim
67 words
A COMPOSITION COMPRISING A SOLID MATRIX OF A WATERINSOLUBLE ORGANIC ELASTOMER FOAM HAVING A MOLECULAR WEIGHT GREATER THAN 10,000, SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, CHLORINATED RUBBER, AND COPOLYMERS OF CONJUGATED DIENES IN WHICH THERE HAS BEEN DISPERSED AN ALKALI-STABILIZED COLLOIDAL SILICIA HAVING AN AVERAGE ULTIMATE PARTICLE SIZE OF ABOUT 0.01 TO 0.03 MICRON, THE ALKALI BEING SUBSTANTIALLY ALL OUTSIDE OF THE SILICA PARTICLES.
References Cited (Backward Citations)
US2597872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |