US2680140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing sponge rubber from latex and product
Assignee: Individual
•
Filing: 1949-04-05
•
Granted: 1954-06-01
•
Expires: 1969-04-05
Abstract
No abstract record available.
Inventors
- 👤 Carter Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5618; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE PROCESS OF DISSOLVING UNEMULSIFIED WHITE OIL INTO NATURAL-RUBBER LATEX WHICH COMPRISES MIXING TWO PARTS BY WEIGHT OF OLEIC ACID WITH 100 PARTS BY WEIGHT OF THE WHITE OIL, AND THEN DISSOLVING THE MIXTURE INTO THE RUBBER OF THE LATEX.
Claim 2
Dependent Claim
40 words
THE PROCESS OF DISSOLVING UNEMULSIFIED WHITE OIL INTO NATURAL-RUBBER LATEX WHICH COMPRISES MIXING TWO PARTS BY WEIGHT OF OLEIC ACID WITH 100 PARTS BY WEIGHT OF THE WHITE OIL, AND THEN DISSOLVING THE MIXTURE INTO THE RUBBER OF THE LATEX.
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
US2426430A
Cited
US2512475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |