US3600487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming parisons with nucleated inner layer
Assignee: Phillips Petroleum Co
•
Filing: 1969-09-08
•
Granted: 1971-08-17
•
Expires: 1989-09-08
Abstract
Abstract TUBULAR PARISONS SUITABLE FOR BLOW MOLDING INTO HIGH STRENGTH TRANSPARENT HOLLOW OBJECTS ARE FORMED HAVING A THIN INNER LAYER OF NUCLEATED POLYPROPYLENE AND A THICKER OUTER LAYER OF POLYPROPYLENE CONTAINING NO NUCLEATING AGENT.
Inventors
- 👤 Fredrick Zavasnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:31
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/22; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/0016; B29C48/16; B29C48/18; B29C48/21; B29C49/0005; B29C2949/00; B29C2949/07; B29C2949/081; B29C2949/0811; B29C2949/0829; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |