US3564656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermodynamic molding of plastic articles
Assignee: Vistron Corp
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Filing: 1968-01-24
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Granted: 1971-02-23
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Expires: 1988-01-24
Abstract
Abstract THE INSTANT APPLICATION RELATES TO AN APPARATUS AND METHOD FOR ROTATIONALLY MOLDING ARTICLES FROM THERMOPLASTIC SYNTHETIC RESINS AND MODIFIED NATURALLY OCCURRING MATERIALS USING A PREDOMINANTLY INFRA-RED HEATING MEANS. MORE PARTICULARLY, THE INSTANT APPLICATION RELATES TO AN IMPROVEMENT OF THE APPARATUS AND METHOD DISCLOSED IN U.S. PATENT NO. 3,315,314 WHICH IMPROVEMENT PERMITS THE THERMODYNAMIC MOLDING OF EVEN VERY LARGE ARTICLES IN AN EXTREMELY SHORT MOLDING CYCLE WITHOUT USING HIGHLY AUTOMATED AND COMPLICATED EQUIPMENT.
Inventors
- 👤 Louis H Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:46
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/04; B29C41/06; B29C33/00; B29C33/02; B29C33/06; B29C41/34; B29C41/46; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0822
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |