Patent US4901592A successfully refreshed from Google Patents.
Patent US3579476A successfully refreshed from Google Patents.
US3579476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass filled graft copolymers of an olefin and an unsaturated acid
Assignee: Dow Chemical Co
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Filing: 1969-02-14
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Granted: 1971-05-18
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Expires: 1989-02-14
Abstract
Abstract POLYMER COMPOSITIONS HAVING IMPROVED TENSILE PROPERTIES AND IMPROVED IMPACT RESISTANCE COMPRISING A BLEND OF BETWEEN ABOUT 10 AND ABOUT 40 WEIGHT PERCENT GLASS FIBERS AND BETWEEN ABOUT 60 AND ABOUT 90 WEIGHT PERCENT OF A GRAFT COPOLYMER OF AN OLEFIN SUCH AS ETHYLENE AND AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID SUCH AS ACRYLIC ACID. THE POLYMER COMPOSITIONS CAN BE MOLDED OR EXTRUDED TO PRODUCE USEFUL ARTICLES OF MANUFACTURE INCLUDING GEARS, SPROCKETS, WASHING MACHINE AGITATORS, GEAR HOUSINGS AND THE LIKE.
Inventors
- 👤 James K Rieke
- 👤 Frank H Justin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:27
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |