US3325331A
Expired / Lapsed
US
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Method for welding synthetic plastic films
Assignee: Kalle GmbH and Co KG
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Filing: 1965-12-27
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Granted: 1967-06-13
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Schwanekamp Hubert
- 👤 Trzeciak Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:35
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C66/00; B29C66/01; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/80; B29C66/004; B29C66/0042; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/45; B29C66/81; B29C66/812; B29C66/8122; B29C66/8124; B29C66/81241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF WELDING SYNTHETIC PLASTIC FILMS WHICH COMPRISES LONGITUDINALLY MOVING AT LEAST TWO FILMS IN CONTACT AND HEAT-SEALING A PLURALITY OF INDIVIDUAL WELDS IN ROWS IN THE FILMS, THE ROWS BEING OBLIQUE TO THE DIRECTION OF TRAVEL OF THE FILMS.
Claim 2
Independent Claim
41 words
A METHOD OF WELDING SYNTHETIC PLASTIC FILMS WHICH COMPRISES LONGITUDINALLY MOVING AT LEAST TWO FILMS IN CONTACT AND HEAT-SEALING A PLURALITY OF INDIVIDUAL WELDS IN ROWS IN THE FILMS, THE ROWS BEING OBLIQUE TO THE DIRECTION OF TRAVEL OF THE FILMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |