US3687699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulating tacky elastomeric materials
Assignee: EIDP Inc
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Filing: 1968-11-29
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Granted: 1972-08-29
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Expires: 1988-11-29
Abstract
Abstract TACKY, ELASTIC, AGGLOMERATIVE SOLID MATERIALS SUCH AS CHLOROPRENE POLYMERS ARE GRANULATED BY MECHANICAL CUTTING IN PROCESSES IN WHICH (1) WATER IS SPRAYED INTO THE VICINITY OF THE CUTTING ACTION AT THE RATE OF FROM .02 TO .15 POUND PER POUND OF TACKY MATERIAL, (2) ENOUGH AIR, HAVING A RELATIVE HUMIDITY LESS THAN 60% AND A TEMPERATURE NOT OVER 20*C. IS BROUGHT INTO CONTACT WITH THE SPRAY TO EVAPORATE SUBSTANTIALLY ALL OF IT, AND (3) SIMULTANEOUSLY A DUSTING AGENT SUCH A TALC IS BROUGHT INTO CONTACT WITH THE TACKY MATERIAL BEING CUT, AT THE RATE OF .02 TO .10 POUND PER POUND OF TACKY MATERIAL.
Inventors
- 👤 Robert M Prosser
- 👤 Nelson A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:57
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/10; B01; B01J; B01J2/00; B01J2/30; B29B9/00
Claims Analysis
Total Claims: 0
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |