US3594342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the introduction of additives into plastic and wax melts
Assignee: Leuna Werke GmbH
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Filing: 1967-09-22
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Granted: 1971-07-20
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Expires: 1987-09-22
Abstract
Abstract PROCESS FOR THE INTRODUCTION OF ADDITIVES INTO PLASTIC AND WAX MELTS BY MEANS OF A CONCENTRATED SOLUTION OR DISPERSION OF SAID ADDITIVES WHEREIN AS SOLVENTS OR DISPERSANTS MOLTEN COPOLYMRS OF ETHYLENE WITH VINYL ACETATE OR WITH ACRYLIC ESTERS OF A MEAN MOLECULAR WEIGHT RANGING FROM 1200 TO 8000 ARE USED.
Inventors
- 👤 Mandred Ratzsch
- 👤 Rolf Kilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2423/00
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |