US3684612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heatsealing apparatus
Assignee: JOHN A PANTAZIS
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Filing: 1970-04-02
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Granted: 1972-08-15
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Expires: 1990-04-02
Abstract
Abstract Novel heat generating apparatus, useful in heatsealing plastics and similar applications required carefully controlled application of heat to sheet materials, whereby heat from a succession of sparks is dissipated along the surface of superposed plastic sheets. The sheets are mounted for movement between electrodes which are offset from one another, advantageously by a distance of about 0.125 inch or more along the sheet surface.
Inventors
- 👤 John A Pantazis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:42
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29C65/022; B29C66/00; B29C66/01; B29C66/02; B29C66/024; B29C66/0242; B29C66/028; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/80; B29C66/83; B29C66/836; B29C66/90; B29C66/93; B29C66/934; B29C66/939; B32B37/00; B32B37/14; B32B37/16; B32B37/20; B32B37/203; B65; B65B; B65B51/00; B65B51/10; B65B51/26; B29C66/43; B29C66/452; B29C66/81; B29C66/812; B29C66/8126; B29C66/81262; B29C66/81263; B29C66/82; B29C66/822; B29C66/8221; B31; B31B; B31B70/00; B31B70/60; B31B70/64; B31B70/642; B32B2310/00; B32B2310/021; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |