US3637571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing thermoplastic resin-additive compositions
Assignee: WILSON-FIBERFIL HOLDINGS Inc A DE CORP
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Filing: 1968-04-15
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Granted: 1972-01-25
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Expires: 1988-04-15
Abstract
Abstract THE PROCESS COMPRISES PREPARING A LIQUID FORMULATION OF SOLID ADDITIVES SUCH AS PIGMENTS DISSOLVED OR DISPERSED IN A SUITABLE MEDIA SUCH AS WATER OR ALIPHATIC HYDROCARBONS, REMOVING ALL THE AGGLOMERATES AND COMBINING THE RESULTING FORMULATION WITH A THERMOPLASTIC RESIN. THE RESULTING MIXTURE IS THEN DRIED AND CAN BE EITHER EXTRUDED OR MILLED AND REDUCED INTO PELLETS OR CHIPS OF RESIN-ADDITIVE COMPOSITIONS OR CONCENTRATES. THE CONCENTRATES ARE BLENDED WITH THE RESPECTIVE BASE RESINS TO ACHIEVE THE DESIRED MODIFICATIONS OF THE PHYSICAL AND CHEMICAL PROPERTIES OF THE BASE.
Inventors
- 👤 Walter Polovina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:30
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/2053
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |