Patent US3816580A successfully refreshed from Google Patents.
US3816580A
Expired / Lapsed
US
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Method for the production of composite articles
Assignee: National Can Corp
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Filing: 1971-12-27
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Granted: 1974-06-11
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Expires: 1991-12-27
Abstract
Abstract Method for the production of composite articles for injection blow molded containers having a preformed inner lining which is applied to the core of the injection molding tool without immediate direct contact with the heated portions of that core. Substantial deformation of the liner is prevented by maintaining said liner prior to molding at a temperature below that at which deformation tends to take place.
Inventors
- 👤 E Valyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:38
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14836; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/064; B29C49/42; B29C49/64; B29C49/6409; B29C2049/023; B29C2949/00; B29C2949/30; B29C2949/3008; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3032; B29C2949/3064; B29C2949/3074; B29C2949/3076; B29C2949/308; B29K; B29K2105/00; B29K2105/25; B29K2105/253
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |