Patent US3817816A successfully refreshed from Google Patents.
US3817816A
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Restricted thermo flow heat seal nest for containers
Assignee: Triparte Ltd
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Filing: 1972-03-14
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Granted: 1974-06-18
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Expires: 1992-03-14
Abstract
Abstract A heat sealing nest for containers that includes a reduced supporting surface are in the form of teeth or ridges or serrations, for controlling the transfer of heat from a sealing platen through a cover and container to the actual nest.
Inventors
- 👤 W Watt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/20; B29C66/24; B29C66/242; B29C66/2422; B29C66/24221; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81431; B29C66/81433; B29C66/81435; B29C66/84; B29C66/849; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/2878; B29C66/83; B29C66/832; B29C66/8322
Claims Analysis
Total Claims: 0
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |