US3700615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste rubber disposal
Assignee: Cities Service Co
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Filing: 1970-12-11
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Granted: 1972-10-24
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Expires: 1990-12-11
Abstract
Abstract WASE VULCANIZED RUBBER IS DEPOLYMERIZED IN A LIQUID HYDROCARBON MEDIUM BY MEANS OF AGITATION, HEAT, FREERADICAL INITIATORS, AND MOLECULAR OXYGEN. THE RESULTING SOLUTION OF RUBBER-MODIFIED HYDROCARBON CAN THEN BE UTILIZED IN THE MANUFACTURE OF END-USE PRODUCTS, THEREBY DISPOSING OF THE WASTE RUBBER WITHOUT POLLUTION OF THE ECOLOGICAL ENVIRONMENT. THE RUBBER-MODIFIED HYDROCARBON CAN, FOR INSTANCE, BY VULCANIZED TO PRODUCE A MOISTURE BARRIER OR INSULATION COATING. IT CAN ALSO BE MIXED WITH ASPHALT TO PROVIDE RUBBERIZED ASPHALTIC COMPOSITIONS. IN STILL ANOTHER APPLICATION, THE RUBBER-MODIFIED HYDROCARBON CAN BE THERMALLY DECOMPOSED TO PRODUCE CARBON BLACK.
Inventors
- 👤 Charles E Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:53
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; C08J11/20; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/482; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |