US2567950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sponge rubber composition
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1948-06-12
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Granted: 1951-09-18
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Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 William R Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:33
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08L; C08L21/00; C08J2201/00; C08J2201/02; C08J2201/032; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A COMPOSITION FOR PRODUCING SPONGE RUBBER COMPRISING AN AQUEOUS DISPERSION OF A RUBBER SELECTED FROM THE GROUP OF NATURAL RUBBER, POLYCHLOROPRENE LATEX, POLYVINYL CHLORIDE LATEX, POLYBUTADIENE LATICES AND MIXTURES THEREOF, A SMALL AMOUNT OF A VEGETABLE OILL AS A PLASTICIZER, FROM SUBSTANIALLY 1 TO 2.3 PERCENT OF A HEAT SENSITIZER SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICO FLUORIDE AND CALCIUM FORMATE OF FROM 80 TO 250 WITH NITROUS OXIDE AT A PRESSURE OF FROM 80 TO 250 LBS., SAID COMPOSITION BEING MAINTAINED AT APPROXIMATELY 40 TO 41* F. AND HAVING THE PROPERTY TO EXPAND UPON RELEASE FROM A CONTAINER INTO A RUBBER FOAM.
Claim 2
Dependent Claim
104 words
A COMPOSITION FOR PRODUCING SPONGE RUBBER COMPRISING AN AQUEOUS DISPERSION OF A RUBBER SELECTED FROM THE GROUP OF NATURAL RUBBER, POLYCHLOROPRENE LATEX, POLYVINYL CHLORIDE LATEX, POLYBUTADIENE LATICES AND MIXTURES THEREOF, A SMALL AMOUNT OF A VEGETABLE OILL AS A PLASTICIZER, FROM SUBSTANIALLY 1 TO 2.3 PERCENT OF A HEAT SENSITIZER SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICO FLUORIDE AND CALCIUM FORMATE OF FROM 80 TO 250 WITH NITROUS OXIDE AT A PRESSURE OF FROM 80 TO 250 LBS., SAID COMPOSITION BEING MAINTAINED AT APPROXIMATELY 40 TO 41* F. AND HAVING THE PROPERTY TO EXPAND UPON RELEASE FROM A CONTAINER INTO A RUBBER FOAM.
References Cited (Backward Citations)
US1746596A
Cited
US1828481A
Cited
US2126273A
Cited
US2325637A
Cited
US2278411A
Cited
US2288190A
Cited
US2319675A
Cited
US2321111A
Cited
US2371707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |