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US3597374A
Expired / Lapsed
US
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Coating process for fibrous substrates
Assignee: ChampionX LLC
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Filing: 1966-09-28
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Granted: 1971-08-03
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Expires: 1986-09-28
Abstract
Abstract A COATING COMPOSITION FOR PAPER AND SIMILAR SUBSTANCES WHICH COMPRISES AN AQUEOUS SOLUTION OF STARCH, A WATERSOLUBLE CATIONIC POLYMER AND A WATER-SOLUBLE ACROLEIN POLYMER.
Inventors
- 👤 Leo E Nagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:40
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/12; C; C08; C08L; C08L3/00; C09; C09D; C09D179/00; C09D179/02
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |