US3684640A
Expired / Lapsed
US
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Insulating substrate for highfrequency welding
Assignee: Dynamit Nobel AG
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Filing: 1971-01-04
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Granted: 1972-08-15
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Expires: 1991-01-04
Abstract
Abstract A COMPOSITE ARTICLE FORMED BY HIGH FREQUENCY WELDING OF SYNTHETIC RESINS IS FORMED BY THE USE OF AN INSULATING MATERIAL WHICH COMPRISES THE SUBSTARATE FOR THE HIGH FREQUENCY WELDING OF A SYNTHETIC RESIN, SUCH AS POLYVINYL CHLORIDE FOAM, TO THE SIEVE-LIKE PERFORATED MATERIAL, SUCH AS VARIOUS TEXTILE MATERIALS, NETTLE CLOTH TRICOT OR PERFORATED SYNTHETIC RESIN FILMS. THE INSULATING SUBSTRATE IS PROVIDED WITH A PLURALITY OF RELATIVELY SMALL PROTUBERANCES AND/OR INDENTATIONS ON THE SIDE WHICH FACES THE MATERIAL TO BE WELDED, RESULTING IN AN EXCELLENT WELDING BOND.
Inventors
- 👤 Theo Hillers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/70; B29C66/72; B29C66/729; B29C37/00; B29C37/0078; B29C37/0082; B29C65/00; B29C65/02; B29C65/04; B29C66/004; B29C66/0042; B29C66/0044; B29C66/01; B29C66/05; B29C66/303; B29C66/3032; B29C66/30321; B29C66/30325; B29C66/3034; B29C66/40; B29C66/41; B29C66/43; B29C66/436; B29C66/71; B29C66/727; B29C66/80; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29K; B29K2027/00; B29K2027/06; B29K2105/00; B29K2105/04; B29K2313/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24479; Y10T428/2457
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 |