US3740287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding plastics with plasma arc radiation
Assignee: Union Carbide Corp
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Filing: 1971-06-10
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Granted: 1973-06-19
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Expires: 1991-06-10
Abstract
Abstract COATED ARTICLES HAVING AN ETHYLENE POLYMER COATING STRONGLY ADHERED TO THE BASE MATERIAL ARE PRODUCED BY EXPOSIING THE COATED BASE MATERIAL TO NON-IONIZING HIGH INTENSITY PREDOMINANTLY CONTINUUM LIGHT RADIATION HAVING A SOURCE INTENSITY OF AT LEAST 350 WATTS PER SQUARE CENTIMETER STERADIAN WITH LESS THAN 30 PERCENT OF THE LIGHT RADIATED HAVING A WAVELENGTH SHORTER THAN 4,000 ANGSTROMS UNITS AND AT LEAST 70 PERCENT OF THE LIGHT RADIATED HAVING A WAVELENGTH LONGER THAN 4,000 ANGSTROMS UNITS. THE EXPOSED COATED ARTICLE CAN SUBSEQUENTLY BE HEATED TO FURTHER IMPROVE ADHESION.
Inventors
- 👤 R Eichhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B15/20; B32B27/06; B32B27/08; B32B27/18; B32B27/30; B32B27/302; B32B27/304; B32B27/32; B32B27/34; B32B27/36; B32B7/00; B32B7/04; B32B7/12; C; C08; C08J; C08J5/00; C08J5/12; B32B2311/00; B32B2311/12; B32B2311/24; B32B2323/00; B32B2323/04; B32B2325/00; B32B2327/00; B32B2367/00; B32B2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |