Patent US1455491A successfully refreshed from Google Patents.
US2617840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for frothing rubber latex
Assignee: Uniroyal Inc
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Filing: 1950-06-10
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Granted: 1952-11-11
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Expires: 1970-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles F Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:42
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08L; C08L21/00; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS OF FROTHING LATEX SELECTED FROM THE GROUP CONSISTING OF AMMONIA PRESERVED NATURAL RUBBER LATEX AND CONJUGATED DIOLEFINE POLYMER SYNTHETIC RUBBER LATEX BY THE EVOLUTION OF OXYGEN IN THE LATEX WHICH COMPRISES INCORPORATING IN THE LATEX AT A TEMPERATURE BETWEEN 0* C. AND 30* C. HYDROGEN PEROXIDE AND CATALASE DECOMPOSITION CATALYST FOR THE HYDROGEN PEROXIDE, AND HYDROXYLAMINE IN SMALL QUANTITY EFFECTIVE TO RETARD THE CATALYST ACTIVITY OF THE CATALASE AND TO SLOW DOWN THE INITIAL RATE OF THE HYDROGEN PEROXIDE DECOMPOSITION.
Claim 2
Dependent Claim
82 words
THE PROCESS OF FROTHING LATEX SELECTED FROM THE GROUP CONSISTING OF AMMONIA PRESERVED NATURAL RUBBER LATEX AND CONJUGATED DIOLEFINE POLYMER SYNTHETIC RUBBER LATEX BY THE EVOLUTION OF OXYGEN IN THE LATEX WHICH COMPRISES INCORPORATING IN THE LATEX AT A TEMPERATURE BETWEEN 0* C. AND 30* C. HYDROGEN PEROXIDE AND CATALASE DECOMPOSITION CATALYST FOR THE HYDROGEN PEROXIDE, AND HYDROXYLAMINE IN SMALL QUANTITY EFFECTIVE TO RETARD THE CATALYST ACTIVITY OF THE CATALASE AND TO SLOW DOWN THE INITIAL RATE OF THE HYDROGEN PEROXIDE DECOMPOSITION.
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) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |