US3660547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic molding process
Assignee: Continental Can Co Inc
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Filing: 1969-06-02
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Granted: 1972-05-02
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Expires: 1989-06-02
Abstract
Abstract A METHOD FOR PRODUCING CONTAINERS WHEREIN A CHARGE COMMINUTED MATERIAL IS INTRODUCED INTO A CHANNEL HAVING A SIMILAR CHARGE. THE CHANNEL IS POSITIONED WITHIN A MOLD HAVING A POTENTIAL OF OPPOSITE CHARGE. THE MATERIAL IS AGITATED IN THE CHANNEL TO ASSIT IN THE ELECTROSTATIC DISTRIBUTION OF THE MATERIAL IN THE MOLD, THE TEMPERATURE OF THE MOLD IS CONTROLLED TO FUSE THE DEPOSITED MATERIAL IN THE FORM OF A CONTAINER AND IN THE FUSE CONTAINER IS REMOVED FROM THE MOLD. THE METHOD MAY BE USED FOR THE FABRICATION OF PLASTIC CONTAINERS, FIBER REINFORCED CONTAINERS AND FOAMED WALL CONTAINERS.
Inventors
- 👤 Herbert S Ruekberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:36
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/01; B; B05; B05C; B05C19/00; B05C19/001; B05C19/002; B05C19/005; B29; B29C; B29C37/00; B29C37/0003; B29C41/00; B29C41/006; B29C41/02; B29C41/04; B29C41/34; B29C41/36; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29C70/14; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/25; B29K2105/251; B29K2909/00; B29K2909/08; B29L; B29L2031/00; B29L2031/712
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |