US3585690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for injection molding and ejection of plastic articles
Assignee: Phillips Petroleum Co
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Filing: 1969-07-01
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Granted: 1971-06-22
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Expires: 1989-07-01
Abstract
Abstract A METHOD AND APPARATUS FOR INJECTION MOLDING AND EJECTING PLASTIC ARTICLES FROM THE MOLD WHEREBY THE ARTICLE IS SEPARATED FROM THE MOLD ELEMENTS IN STAGES AND THE FORCES OF EJECTION ARE REDUCED AND DISTRIBUTED OVER SEVERAL PORTIONS OF THE MOLDED ARTICLE.
Inventors
- 👤 Alvin S Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/2624; B29C45/33; B29C2045/338; Y; Y10; Y10S; Y10S425/00; Y10S425/005
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |