US2755258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary amine oxides in foam rubber
Assignee: Bridgestone Firestone Inc
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Filing: 1952-11-01
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Granted: 1956-07-17
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Expires: 1972-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hay
- 👤 Spencer M Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:18
CPC Classifications
C; C08; C08L; C08L21/00; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08J9/30; F; F24; F24H; F24H9/00; F24H9/02; C08J2321/00; Y; Y10; Y10S; Y10S138/00; Y10S138/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A METHOD OF PRODUCING FOAM RUBBER HAVING A FINE CONTINUOUS STRUCTURE WHICH COMPRISES INCORPORATING INTO A RUBBER LATEX A SOAP, VULCANIZING INGREDIENTS INCLUDING ZINC OXIDE, A LATEX GELLING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SILICOFLUORIDES, AMMONIUM NITRATE AND AMMONIUM SULFATE, AND A REALTIVELY SMALL AMOUNT OF A TERTIARY AMINE OXIDE 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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |