US2761001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex foam sponge containing an alkali salt of perfluoromonocarboxylic acid
Assignee: Uniroyal Inc
•
Filing: 1953-03-02
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Granted: 1956-08-28
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Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles F Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:55
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08L; C08L21/00; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF MAKING SPONGE RUBBER WHICH COMPRISES PREPARING A FLUID FOAM OF A RUBBER LATEX CONTAINING 0.2 TO 1 PART, PER 100 PARTS OF LATEX SOLIDS, OF AN ALKALI SALT OF A PERFLUOROMONOCARBOXYLIC ACID OF THE ALIPHATIC SERIES HAVING 8 TO 18 CARBON ATOMSA IN THE MOLECULE, AND 0.5 TO 5 PARTS, PER 100 PARTS OF LATEX SOLIDS, OF A WATERSOLUBLE SOAP OF SOAP-FORMING MONOCARBOXYLIC ACID, SHAPING AND GELLING THE FOAM, AND VULCANIZING TO FORM SPONGE RUBBER.
Claim 2
Independent Claim
78 words
THE METHOD OF MAKING SPONGE RUBBER WHICH COMPRISES PREPARING A FLUID FOAM OF A RUBBER LATEX CONTAINING 0.2 TO 1 PART, PER 100 PARTS OF LATEX SOLIDS, OF AN ALKALI SALT OF A PERFLUOROMONOCARBOXYLIC ACID OF THE ALIPHATIC SERIES HAVING 8 TO 18 CARBON ATOMSA IN THE MOLECULE, AND 0.5 TO 5 PARTS, PER 100 PARTS OF LATEX SOLIDS, OF A WATERSOLUBLE SOAP OF SOAP-FORMING MONOCARBOXYLIC ACID, SHAPING AND GELLING THE FOAM, AND VULCANIZING TO FORM SPONGE RUBBER.
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) | 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 |