US3740254A
Expired / Lapsed
US
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Method of vacuum metallizing thermoplastic polymeric film and resulting product
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-04-09
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Granted: 1973-06-19
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Expires: 1991-04-09
Abstract
Abstract USING RESINS CONTAINING AN ISOCYANATE-ENDED POLYURETHANE OF AVERAGE MOLECULAR WEIGHT MORE THAN 1000 AND AN ORGANIC POLYISOCYANATE CONTAINING AN AVERAGE OF MORE THAN TWO ISOCYANURATE GROUPS PER MOLECULE AS PRIMER COATINGS FOR METALLIZING THERMOPLASTIC FILMS.
Inventors
- 👤 R Lansbury
- 👤 D Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:28
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/20; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C09; C09J; C09J175/00; C09J175/04; C23C14/02; C23C14/024; C08J2475/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31573; Y10T428/31587; Y10T428/31605; Y10T428/31678; Y10T428/31786
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 |