Patent US3590107A successfully refreshed from Google Patents.
US3590107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of flame treating subbed sheets of linear polyesters prior to orientation
Assignee: Eastman Kodak Co
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Filing: 1969-06-26
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Granted: 1971-06-29
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Expires: 1989-06-26
Abstract
Abstract A METHOD HAS BEEN FOUND FOR IMPROVING THE APPEARANCE OF SHEETS OF LINEAR POLYESTER WHICH ARE ORIENTED SUBSEQUENT TO SUBBING WITH AN AQUEOUS SUB CONTAINING AN "ATTACK" AGENT (SUCH AS RESORCINOL, FOR EXAMPLE) WHICH METHOD COMPRISES QUICKLY PASSING THAT SURFACE OF THE SHEETS WHICH IS TO BE SUBBED THROUGH THE PRIMARY CONE OF A HYDROCARBON GAS FLAME JUST PRIOR TO APPLICATION OF THE SUM. AS A RESULT, "PRINTOFF" DEFECTS CAN BE PRACTICALLY ELIMINATED FROM THE SHEETS. D R A W I N G
Inventors
- 👤 Edward W Smith Jr
- 👤 Arthur W Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:35
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/08; B29K; B29K2067/00
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |