US2640036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making latex sponge rubber
Assignee: Uniroyal Inc
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Filing: 1951-02-15
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Granted: 1953-05-26
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Expires: 1971-02-15
Abstract
No abstract record available.
Inventors
- 👤 Philip D Brass
- 👤 James U Mann
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; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PROCESS OF MAKING LATEX SPONGE RUBBER WHICH COMPRISES FORMING INTO A FLUID UNCOAGULATED FOAM A RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX AND BUTADIENE POLYMER SYNTHETIC RUBBER LATICES WHICH IS COAGGLABLE WITH CARBON DIOXIDE SHAPING THE UNCOAGULATED FOAM, AND COAGULATING THE SHAPED FOAM WHILE IN THE FLUID STATE BY MEANS OF AN ATMOSPHERE CONSISTING OF CARBON DIOXIDE GAS UNDER PRESSURE OF AT LEAST 0.03 POUND PER SQUARE INCH GAUGE PRESSURE AND LESS THAN ONE POUND PER SQUARE INCH GAUGE PRESSURE, THE SIZE AND SHAPE OF SAID SHAPED FLUID FOAM BEING SUCH THAT THE CARBON DIOXIDE TRAVELS NOT MORE THAN THREE INCHES THROUGH UNCOAGULATED FOAM.
Claim 2
Dependent Claim
109 words
THE PROCESS OF MAKING LATEX SPONGE RUBBER WHICH COMPRISES FORMING INTO A FLUID UNCOAGULATED FOAM A RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX AND BUTADIENE POLYMER SYNTHETIC RUBBER LATICES WHICH IS COAGGLABLE WITH CARBON DIOXIDE SHAPING THE UNCOAGULATED FOAM, AND COAGULATING THE SHAPED FOAM WHILE IN THE FLUID STATE BY MEANS OF AN ATMOSPHERE CONSISTING OF CARBON DIOXIDE GAS UNDER PRESSURE OF AT LEAST 0.03 POUND PER SQUARE INCH GAUGE PRESSURE AND LESS THAN ONE POUND PER SQUARE INCH GAUGE PRESSURE, THE SIZE AND SHAPE OF SAID SHAPED FLUID FOAM BEING SUCH THAT THE CARBON DIOXIDE TRAVELS NOT MORE THAN THREE INCHES THROUGH UNCOAGULATED 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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |