US2604665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic curing of sponge rubber
Assignee: Bridgestone Firestone Inc
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Filing: 1947-04-14
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Granted: 1952-07-29
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Expires: 1967-04-14
Abstract
No abstract record available.
Inventors
- 👤 George P Bosomworth
- 👤 Fred H Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
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; Y; Y10; Y10S; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF FORMING CELLULAR RUBBER ARTICLES OF IRREGULAR SHAPE COMPRISING THE STEPS OF DISPERSING RUBBER COMPOSITION IN A LIQUID HAVING A BOILING POINT NOT LESS THAN THE UPPER VALUE OF THE TEMPERATURE RANGE OF VULCANIZATION OF SAID RUBBER COMPOSITION AND SUBJECTING SAID DISPERSED RUBBER OR RUBBER COMPOSITION TO THE ACTION OF HIGH FREQUENCY ELECTRICAL ENERGY OF SUFFICIENT INTENSITY AND FOR A PERIOD OF TIME SUFFICIENT TO CURE SAID RUBBER COMPOSITION, SAID LIQUID CONSTITUENTS BEING MAINTAINED IN SAID COMPOSITION DURING THE CURING PERIOD.
Claim 2
Independent Claim
83 words
A METHOD OF FORMING CELLULAR RUBBER ARTICLES OF IRREGULAR SHAPE COMPRISING THE STEPS OF DISPERSING RUBBER COMPOSITION IN A LIQUID HAVING A BOILING POINT NOT LESS THAN THE UPPER VALUE OF THE TEMPERATURE RANGE OF VULCANIZATION OF SAID RUBBER COMPOSITION AND SUBJECTING SAID DISPERSED RUBBER OR RUBBER COMPOSITION TO THE ACTION OF HIGH FREQUENCY ELECTRICAL ENERGY OF SUFFICIENT INTENSITY AND FOR A PERIOD OF TIME SUFFICIENT TO CURE SAID RUBBER COMPOSITION, SAID LIQUID CONSTITUENTS BEING MAINTAINED IN SAID COMPOSITION DURING THE CURING PERIOD.
References Cited (Backward Citations)
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 |