US3733215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of polyester material
Assignee: Agfa Gevaert NV
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Filing: 1971-06-08
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Granted: 1973-05-15
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Expires: 1991-06-08
Abstract
Abstract TO IMPROVE THE ADHESION TO POLYESTER SURFACES OF LAYERS WHICH ARE SUBSEQUENTLY TO BE APPLIED THERETO, THERE IS PREVIOUSLY APPLIED TO THE POLYESTER SURFACE A UNIFORM LAYER OF FINELY DIVIDED SILICA FROM AN AQUEOUS DISPERSION OF SILICA PARTICLES CONTAINING CHLORAL HYDRATE.
Inventors
- 👤 Paesschen A Van
- 👤 Gossum L Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:06
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/043; C08J7/044; G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03G; G03G5/00; G03G5/10; C08J2367/00; C08J2367/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |