Patent US3452120A successfully refreshed from Google Patents.
US3452120A
Expired / Lapsed
US
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Blending solid olefin polymers with rubber
Assignee: Phillips Petroleum Co
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Filing: 1964-05-21
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Granted: 1969-06-24
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Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Philip M Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:48
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08L; C08L21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2785143A
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US3123583A
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US3021567A
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US3002938A
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US3044899A
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GB936741A
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US3283036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |