Patent US2822338A successfully refreshed from Google Patents.
US2822338A
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Quaternary ammonium hydroxides in foam rubber
Assignee: Bridgestone Firestone Inc
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Filing: 1954-01-08
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Granted: 1958-02-04
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Expires: 1974-01-08
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:53
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08L; C08L21/00; C08J2309/00; C08J2309/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF PRODUCING A FOAM RUBBER HAVING A PARTICULARLY FINE CONTINUOUS STRUCTURE FROM A RUBBER CONJUGATED DIENE POLYMER LATEX WHICH COMPRISES INCORPORATING INTO SAID LATEX A FATTY ACID SOAP, VULCANIZING INGREDIENTS INCLUDING SULFUR AND ZINC OXIDE, AN ALKALI METAL SILICOFLUORIDE AS A LATEX GELLING AGENT AND ABOUT 0.1% TO ABOUT 3.0% BY WEIGHT OF THE DRY POLYMER CONTENT OF SAID LATEX OF A QUATERNARY AMMONIUM HYDROXIDE HAVING THE FORMULA
Claim 2
Independent Claim
70 words
A METHOD OF PRODUCING A FOAM RUBBER HAVING A PARTICULARLY FINE CONTINUOUS STRUCTURE FROM A RUBBER CONJUGATED DIENE POLYMER LATEX WHICH COMPRISES INCORPORATING INTO SAID LATEX A FATTY ACID SOAP, VULCANIZING INGREDIENTS INCLUDING SULFUR AND ZINC OXIDE, AN ALKALI METAL SILICOFLUORIDE AS A LATEX GELLING AGENT AND ABOUT 0.1% TO ABOUT 3.0% BY WEIGHT OF THE DRY POLYMER CONTENT OF SAID LATEX OF A QUATERNARY AMMONIUM HYDROXIDE HAVING THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |