US3632378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacture of dual coated sheet with pressure rupturable materials
Assignee: Appvion LLC
•
Filing: 1969-01-31
•
Granted: 1972-01-04
•
Expires: 1989-01-31
Abstract
Abstract Tandem coating of paper web on one side with a clay coat and on the other side with a coating of pressure-rupturable encapsulated materials with the clay coat applied first and with a calender immediately before the coating with the encapsulated materials.
Inventors
- 👤 Thomas W Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:45
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/30; B; B41; B41M; B41M5/00; B41M5/124; B41M5/1246; B41M5/165; B41M5/1655; D21H19/00; D21H23/52; D21H23/56; D21H5/00; D21H5/0005; D21H5/0007; D21H5/0025; D21H5/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
The method as claimed in claim 1 in which, while the clay coated sheet is continuously advanced through the drying zone, the sheet is supported with the clay coated side uppermost on a surface traveling at substantially the same linear speed as the paper for drying the coating by directing hot air jets onto the coated side of the sheet while the sheet is in a relaxed state.
References Cited (Backward Citations)
US3311499A
Cited
US2325798A
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US2388339A
Cited
US2711375A
Cited
US3196038A
Cited
US3186861A
Cited
US3020170A
Cited
US3226252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |