US3673021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a laminated mat from plies of fibrous pulp material
Assignee: CURT G JOA
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Filing: 1969-02-03
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Granted: 1972-06-27
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Expires: 1989-02-03
Abstract
Abstract A COMPOSITE MAT OF LAMINATED SEPARATELY FORMED PLIES OF PULP FIBERS PICKED FROM A PULP BOARD AND SPRAYED WITH ADHESIVE WHILE AIRBORNE TO THOROUGHTLY EXPOSE THE FIBERS TO THE ADHESIVE BEFORE THE PLY IS FORMED. SUCH MULTIPLE PLIES ARE LAMINATED AND BOUND TOGETHER BY SAID ADHESIVE INTO SAID COMPOSITE MAT. THE APPARATUS COMPRISES A TANDEM SERIES OF PULP FIBERIZERS WHICH CONCURRENTLY FORM SUCH PLIES AND LAMINATE THE PLIES INTO SAID COMPOSITE MAT.
Inventors
- 👤 Curt G Joa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/2607; D21H5/2628; D21H11/00; D21H11/14; D21H23/00; D21H23/02; D21H23/04; D21H27/00; D21H27/30
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |