Patent US5125896A successfully refreshed from Google Patents.
US3701702A
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Method of free curing rubber
Assignee: Uniroyal Chemical Co Inc
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Filing: 1970-08-25
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Granted: 1972-10-31
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Expires: 1990-08-25
Abstract
Abstract A VULCANIZABLE RUBBER IS MODIFIED BY THE ADDITION OF A RESIN AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID RESIN, WHEREUPON CURATIVES AND OTHER ADDITIVES ARE ADDED TO THE BLEND AT A TEMPERATURE BELOW THE MELTING POINT OF SAID RESIN. A SHAPED ARTICLE IS FORMED FROM THE RESULTING BLEND AND CURED WITHOUT RESTRAINING PRESSURE AT A TEMPERATURE ELOW THE MELTING POINT OF SAID RESIN.
Inventors
- 👤 Daniel Shichman
- 👤 Sung Whee Hong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:18
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08L; C08L21/00; C08L23/00; C08L23/02; C08L23/16; C08L67/00; C08L67/02; C08L91/00; C08J2321/00; C08L2312/00; C08L2666/00; C08L2666/02
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |