US3057750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reinforcing a preformed elastomer foam
Assignee: EIDP Inc
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Filing: 1958-12-16
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Granted: 1962-10-09
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Expires: 1978-12-16
Abstract
No abstract record available.
Inventors
- 👤 Bennett Bailey
- 👤 Louis E Novy
- 👤 Jr Frank A Simko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; C08J2321/00; C08J2429/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR REINFORCING A PREFORMED ELASTOMER FOAM THE STEPS COMPRISING BRINGING THE PREFORMED FOAM INTO CONTACT WITH A COMPOSITION COMPRISING UPWARDS OF 50% BY WEIGHT OF AN AQUEOUS SOL OF SUBSTANTIALLY DISCRETE SILICA PARTICLES 5 TO 150 MILLIMICRONS IN AVERAGE DIMENSION SAID AQUEOUS SOL CONTAINING, BASED ON THE WEIGHT OF SILICA, ABOUT 4 TO 45% BY WEIGHT OF AN ORGANIC, NON-ELASTOMERIC FILM FORMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL BUTYRAL, POLYVINYL FORMAL, POLYVINYL ALCOHOL, AND COPOLYMER OF A MAJOR PROPORTION OF VINYL ACETATE AND A MINOR PROPORTION OF CROTONIC ACID, AND THEREAFTER DRYING THE TREATED FOAM.
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR REINFORCING A PREFORMED ELASTOMER FOAM THE STEPS COMPRISING BRINGING THE PREFORMED FOAM INTO CONTACT WITH A COMPOSITION COMPRISING UPWARDS OF 50% BY WEIGHT OF AN AQUEOUS SOL OF SUBSTANTIALLY DISCRETE SILICA PARTICLES 5 TO 150 MILLIMICRONS IN AVERAGE DIMENSION SAID AQUEOUS SOL CONTAINING, BASED ON THE WEIGHT OF SILICA, ABOUT 4 TO 45% BY WEIGHT OF AN ORGANIC, NON-ELASTOMERIC FILM FORMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL BUTYRAL, POLYVINYL FORMAL, POLYVINYL ALCOHOL, AND COPOLYMER OF A MAJOR PROPORTION OF VINYL ACETATE AND A MINOR PROPORTION OF CROTONIC ACID, AND THEREAFTER DRYING THE TREATED FOAM.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |