US2801274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sponge rubber from foamed rubber latex
Assignee: Uniroyal Inc
•
Filing: 1953-10-15
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Granted: 1957-07-30
•
Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Bethe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:13
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08L; C08L21/00; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF MAKING FOAM RUBBER SPONGE ARTICLES WHICH COMPRISES WHIPPING A RUBBER LATEX WHICH IS COAGULABLE BY CARBON DIOXIDE INTO A FLUID POURABLE FOAM CONTAINING A GELLING AGENT WHICH IS CAPABLE OF IRREVERSIBLY GELLING THE FOAM AFTER POURING INTO THE DESIRED SHAPE IN FROM 3 MINUTES TO LESS THAN ONE HOUR IN AIR AT ROOM TEMPERATURE, POURING THE FOAM INTO THE DESIRED SHAPE BEFORE THE GELLING TAKES PLACE, THEN PROVIDING THE THUS SHAPED FOAM ALSO BEFORE THE GELLING TAKES PLACE WITH AN ATMOSPHERE COMPRISING AT LEAST 50% BY VOLUME OF CARBON DIOXIDE TO ACCELERATE THE GELLING AND TO CAUSE THE GELLING OF THE FOAM BEFORE ITS NORMAL GELLING TIME, AND VULCANIZING THE GELLED FOAM.
Claim 2
Independent Claim
115 words
THE METHOD OF MAKING FOAM RUBBER SPONGE ARTICLES WHICH COMPRISES WHIPPING A RUBBER LATEX WHICH IS COAGULABLE BY CARBON DIOXIDE INTO A FLUID POURABLE FOAM CONTAINING A GELLING AGENT WHICH IS CAPABLE OF IRREVERSIBLY GELLING THE FOAM AFTER POURING INTO THE DESIRED SHAPE IN FROM 3 MINUTES TO LESS THAN ONE HOUR IN AIR AT ROOM TEMPERATURE, POURING THE FOAM INTO THE DESIRED SHAPE BEFORE THE GELLING TAKES PLACE, THEN PROVIDING THE THUS SHAPED FOAM ALSO BEFORE THE GELLING TAKES PLACE WITH AN ATMOSPHERE COMPRISING AT LEAST 50% BY VOLUME OF CARBON DIOXIDE TO ACCELERATE THE GELLING AND TO CAUSE THE GELLING OF THE FOAM BEFORE ITS NORMAL GELLING TIME, AND VULCANIZING THE GELLED FOAM.
References Cited (Backward Citations)
GB411202A
Cited
US2217605A
Cited
US2346055A
Cited
US2432353A
Cited
US2604663A
Cited
US2640036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |