US3262838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repulpable coated paper
Assignee: Interchemical Corp
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Filing: 1963-04-04
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Granted: 1966-07-26
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 Richard D Vieth
- 👤 Joseph A Dooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:43
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/26; D21H19/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A PROCESS FOR REPULPING COATED PRINTED PAPER WHICH COMPRISES APPLYING A DILUTE AQUEOUS SOLUTION OF SODIUM HYDROXIDE TO A PAPER COMPRISING A PRINTED SUBSTRATE COATED WITH A BLEND OF (1) A COPOLYMER COMPRISING FROM 15 TO 30% OF ACRYLIC ACID MONOMERS AND FROM 70 TO 85% OF ACRYLIC ESTER MATERIAL HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |