US3751397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propylene polymer composition containing glass fibers
Assignee: Mitsui Chemicals Inc
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Filing: 1971-06-14
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Granted: 1973-08-07
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Expires: 1991-06-14
Abstract
Abstract A GLASS FIBER-REINFORCED PROPYLENE POLYMER COMPOSITION COMPRISING A MODIFIED PROPYLENE POLYMER HAVING GRAFTED THERETO BOTH STYRENE AND MALEIC ANHYDRIDE, AND GLASS FIBERS TREATED WITH AN AMINOTRIALKOXY SILANE COMPOUND, AND OPTIONALLY AN OLEFIN POLYMER AS A THIRD COMPONENT. THE COMPOSITION HAS HIGH TENSILE MODULUS OF ELASTICITY AND STRESS AT BENDING YIELD POINT. MALEIC ANHYDRIDE CAN BE GRAFTED AT A HIGH RATIO IN THE PRESENCE OF STYRENE.
Inventors
- 👤 K Muto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:27
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C08F; C08F255/00; C08F255/02; C08K; C08K9/00; C08K9/04; C08K9/06; C08L23/14; C08L23/142; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L51/00; C08L51/06
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |