US2512464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sponge rubber
Assignee: Uniroyal Inc
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Filing: 1949-06-24
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Granted: 1950-06-20
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Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 James U Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:17
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; B; B29; B29C; B29C35/00; B29C35/02; B29C35/12; B29C44/00; B29C44/34; B29C44/3415; C08L; C08L21/00; C08J2321/00; C08J2321/02; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS OF PRODUCING SPONGE RUBBER FROM A LATEX WHICH COMPRISES INTRODUCING A HEATSETTABLE LATEX FROTH INTO A MOLD, AND SETTING THE FROTH IN THE MOLD BY PASSAGE OF A LOW FREQUENCY ALTERNATING ELECTRIC CURRENT THROUGH THE FROTH BETWEEN METAL ELECTRODES, AT LEAST ONE OF SAID ELECTRODES BEING IN CONTACT WITH A PORTION OF THE OUTER SURFACE OF THE SPONGE ARTICLE BEING MOLDED AND THE SURFACE OF WHICH ELECTRODE IN CONTACT WITH THE FOAM IS COMPOSED OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC AND CADMIUM.
Claim 2
Dependent Claim
88 words
THE PROCESS OF PRODUCING SPONGE RUBBER FROM A LATEX WHICH COMPRISES INTRODUCING A HEATSETTABLE LATEX FROTH INTO A MOLD, AND SETTING THE FROTH IN THE MOLD BY PASSAGE OF A LOW FREQUENCY ALTERNATING ELECTRIC CURRENT THROUGH THE FROTH BETWEEN METAL ELECTRODES, AT LEAST ONE OF SAID ELECTRODES BEING IN CONTACT WITH A PORTION OF THE OUTER SURFACE OF THE SPONGE ARTICLE BEING MOLDED AND THE SURFACE OF WHICH ELECTRODE IN CONTACT WITH THE FOAM IS COMPOSED OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC AND CADMIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |