US3597298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoformed plastic closure and method of making same
Assignee: BPrex Healthcare Brookville Inc
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Filing: 1968-05-13
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Granted: 1971-08-03
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Expires: 1988-05-13
Abstract
Abstract THIS INVENTION RELATES TO AN IMPROVED CLOSURE FOR GLASS, PAPER, OR PLASTIC CONTAINERS WHICH CAN BE ECONOMICALLY PRODUCED BY THERMOFORMING OPERATIONS UPON A SHEET OF THERMOPLASTIC MATERIAL. IN ACCORDANCE WITH THE METHOD OF THIS INVENTION, AN ANNULAR BAND OR FILM OF AN ADHESIVEFORMING MATERIAL IS APPLIED TO AN ANNULAR SURFACE OF A THERMOFORMING MOLD. THE APPLICATION OF A THERMOPLASTIC SHEET TO THE THERMOFORMING MOLD CONCURRENTLY RESULTS IN THE FORMATION OF THE DESIRED CLOSURE CONFIGURATION AND THE TRANSFER OF THE ANNULAR BAND OF ADHESIVE-FORMING MATERIAL TO THE FINISHED CLOSURE.
Inventors
- 👤 Edward J Stengle Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B29; B29C; B29C51/00; B29C51/12; B29C51/16; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1052; Y10T156/1062; Y10T156/107; Y10T156/1072; Y10T156/17; Y10T156/1702; Y10T156/1705; Y10T428/00; Y10T428/21; Y10T428/214; Y10T428/31504; Y10T428/31855; Y10T428/31909
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |