US2693006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sponge rubber articles
Assignee: Uniroyal Inc
•
Filing: 1952-04-26
•
Granted: 1954-11-02
•
Expires: 1972-04-26
Abstract
No abstract record available.
Inventors
- 👤 Toy T Shigekawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:27
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C44/00; B29C44/005; B29K; B29K2021/00; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
THE METHOD OF INCREASING THE POROSITY OF THE SURFACE SKIN OF A SPONGE RUBBER ARTICLE FROM MOLDED LATEX FOAM WHICH COMPRISES SPRAYING ON THE MOLDING SURFACE OF A METAL MOLD ON 0.5% TO 1.5% AQUEOUS SOLUTION OF SODIUM POLYACRYLATE, MOLDING LATEX FOAM CONTAINING A GELLING AGENT AGAINST THE THUS TREATED MOLD SURFACE, AND GELLING THE MOLDED FOAM.
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US2333679A
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US2376244A
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US2388153A
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US2604664A
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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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |