Patent US2604666A successfully refreshed from Google Patents.
US2604666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of cellular rubber
Assignee: Bridgestone Firestone Inc
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Filing: 1947-05-02
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Granted: 1952-07-29
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Expires: 1967-05-02
Abstract
No abstract record available.
Inventors
- 👤 George P Bosomworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:40
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/12; B29C44/00; B29C44/34; B29C44/3415; B29C33/00; B29C33/02; B29C33/06; B29K; B29K2021/00; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF MAKING A CELLULAR RUBBER ARTICLE WHICH COMPRISES FROTHING AN AQUEOUS DISPERSION OF VULCANIZABLE RUBBER, GELLING SAID FROTH IN THE DESIRED SHAPE, SUBJECTING THE WET, GELLED FROTH TO A HIGH FREQUENCY ELECTRICAL FIELD, AND TERMINATING THE APPLICATION OF SAID FIELD WHEN AN ABRUPT REDUCTION IN THE ABSORPTION OF POWER BY SAID ARTICLE OCCURS.
Claim 2
Independent Claim
55 words
THE METHOD OF MAKING A CELLULAR RUBBER ARTICLE WHICH COMPRISES FROTHING AN AQUEOUS DISPERSION OF VULCANIZABLE RUBBER, GELLING SAID FROTH IN THE DESIRED SHAPE, SUBJECTING THE WET, GELLED FROTH TO A HIGH FREQUENCY ELECTRICAL FIELD, AND TERMINATING THE APPLICATION OF SAID FIELD WHEN AN ABRUPT REDUCTION IN THE ABSORPTION OF POWER BY SAID ARTICLE OCCURS.
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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |