US2604666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of cellular rubber
Assignee: Bridgestone Firestone Inc
•
Filing: 1947-05-02
•
Granted: 1952-07-29
•
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
2026-10-24 20:22
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)
US1828481A
Cited
US2280771A
Cited
US2204617A
Cited
US2261847A
Cited
US2112418A
Cited
US2216785A
Cited
US2325637A
Cited
US2293851A
Cited
US2384982A
Cited
US2395920A
Cited
US2339607A
Cited
US2441548A
Cited
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 |