US2616860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing synthetic rubber
Assignee: Uniroyal Inc
•
Filing: 1951-09-06
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Granted: 1952-11-04
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Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Leukhardt
- 👤 James W Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:29
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; C08L; C08L21/00; C08L79/00; C08L79/02; C08L9/00; C08L9/06; C08L9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE PROCESS WHICH COMPRISES MIXING WITH SYNTHETIC RUBBER LATEX AN AQUEOUS DISPERSION OF HYDRATED SILICA REINFORCING AGENT CONTAINING A POLYETHYLENE POLYAMINE, COAGULATING THE MIXTURE, AND SEPARATING THE COAGULUM THUS FORMED, SAID SYNTHETIC RUBBER LATEX BEING AN AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENES-1,3 AND MIXTURES OF BUTADIENES-1,3 WITH MATERIAL WHICH CONTAINS A SINGLE CH2=C< BOND AND IS COPOLYMERIZABLE WITH BUTADIENES-1,3.
Claim 2
Dependent Claim
66 words
THE PROCESS WHICH COMPRISES MIXING WITH SYNTHETIC RUBBER LATEX AN AQUEOUS DISPERSION OF HYDRATED SILICA REINFORCING AGENT CONTAINING A POLYETHYLENE POLYAMINE, COAGULATING THE MIXTURE, AND SEPARATING THE COAGULUM THUS FORMED, SAID SYNTHETIC RUBBER LATEX BEING AN AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENES-1,3 AND MIXTURES OF BUTADIENES-1,3 WITH MATERIAL WHICH CONTAINS A SINGLE CH2=C< BOND AND IS COPOLYMERIZABLE WITH BUTADIENES-1,3.
References Cited (Backward Citations)
US2576909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |