Patent US2643233A successfully refreshed from Google Patents.
US2643233A
Expired / Lapsed
US
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Method of making latex foam
Assignee: Motors Liquidation Co
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Filing: 1950-04-28
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Granted: 1953-06-23
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Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Bennett Bailey
- 👤 George H Mcfadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08J9/0061; C08L; C08L21/00; C08J2321/00; C08J2321/02; C08J2421/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A METHOD OF MAKING FOAMED LATEX ARTICLES, THE STEPS COMPRISING, ADMIXING TWO COMPATIBLE LATICES OF RUBBERY MATERIALS, ONE OF WHICH HAS A SOLIDS CONTENT OF BELOW 50% BY WEIGHT AND A PH OF NOT MORE THAN 8.5 AND THE OTHER OF WHICH HAS A SOLIDS CONTENT OF ABOVE 50% BY WEIGHT AND A PH OF ABOVE 10 IN PROPORTIONS SO THAT THE RESULTING MIXTURE OF LATICES HAS A SOLIDS CONTENT OF AT LEAST 50% BY WEIGHT AND A PH WITHIN THE RANGE OF 8 TO 9.8, ADDING THE ZINC OXIDE AND ALL OF THE COMPOUNDING INGREDIENTS TO THE LATEX EXCEPT THE GELLING AGENT, FOAMING THE LATEX ADDING THE GELLING AGENT, AND THEN MOLDING SAID
Claim 2
Dependent Claim
115 words
IN A METHOD OF MAKING FOAMED LATEX ARTICLES, THE STEPS COMPRISING, ADMIXING TWO COMPATIBLE LATICES OF RUBBERY MATERIALS, ONE OF WHICH HAS A SOLIDS CONTENT OF BELOW 50% BY WEIGHT AND A PH OF NOT MORE THAN 8.5 AND THE OTHER OF WHICH HAS A SOLIDS CONTENT OF ABOVE 50% BY WEIGHT AND A PH OF ABOVE 10 IN PROPORTIONS SO THAT THE RESULTING MIXTURE OF LATICES HAS A SOLIDS CONTENT OF AT LEAST 50% BY WEIGHT AND A PH WITHIN THE RANGE OF 8 TO 9.8, ADDING THE ZINC OXIDE AND ALL OF THE COMPOUNDING INGREDIENTS TO THE LATEX EXCEPT THE GELLING AGENT, FOAMING THE LATEX ADDING THE GELLING AGENT, AND THEN MOLDING SAID
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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |