Patent US2881072A successfully refreshed from Google Patents.
US2881072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making reinforced multiply paper
Assignee: Fibrofelt Corp
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Filing: 1956-01-17
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Granted: 1959-04-07
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Expires: 1976-01-17
Abstract
No abstract record available.
Inventors
- 👤 James D A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:18
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/2678; D21H5/2692; D21H27/00; D21H27/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
THE METHOD OF MAKING A REINFORCED MULTIPLY PAPER COMPRISING THE STEPS OF MOVING AN ENDLESS MEMBER CONTINUOUSLY IN ONE DIRECTION, DEPOSITING A WET LAYER OF PAPER PULP FIBERS AS A CONTINUOUS LAYER ON THE SURFACE OF THE MOVING MEMBER, MOVING ANOTHER FORAMINOUS MEMBER CONTINOUSLY IN ONE DIRECTION AT A LINEAR SPEED CORRESPONDING TO THAT OF THE FIRST MEMBER AND WITH A PORTION THEREOF PASSING IN CLOSELY SPACED RELATION AND IN THE SAME DIRECTION WITH A PORTION OF THE FIRST MOVING MEMBER HAVING THE WET WEB OF PULP FIBERS ON THE SURFACE THEREOF, PASSING A STREAM OF AIR CONTAINING DRY FIBERS OF REINFORCING LENGTHS UNIFORMLY DISTRIBUTED THEREIN THROUGH THE FORAMINOUS MEMBER TO SEPARATE OUT DRY FIBERS OF REINFORCING LENGTHS IN UNIFORM DISTRIBUTION ON THE SURFACE THEREOF TO FORM AN ENDLESS WEB OF DRY FIBERS ON THE FORAMINOUS MEMBER, CONTACTING THE WEB OF WET PULP FIBERS WITH THE WEB OF DRY REINFORCING FIBERS AS THE MOVING MEMBER AND FORAMINOUS MEMBER TRAVEL IN THE SAME DIRECTION TOGETHER IN CLOSELY SPACED RELATION WITH EACH OTHER WHEREBY THE WEB OF DRY REINFORCING FIBERS IS PRESSED ONTO THE WEB OF WET PULP FIBERS AND IS COUCHED FROM THE FORAMINOUS MEMBER ONTO THE LAYER OF WEB FIBERS TO FORM THE TOP PLY ON THE LAYER OF WET PULP FIBERS, COMPRESSING THE FORMED LAYERS FOR CONSOLIDATION, AND THEN DRYING THE CONSOLIDATED LAYERS TO FORM A PAPER.
Claim 2
Independent Claim
228 words
THE METHOD OF MAKING A REINFORCED MULTIPLY PAPER COMPRISING THE STEPS OF MOVING AN ENDLESS MEMBER CONTINUOUSLY IN ONE DIRECTION, DEPOSITING A WET LAYER OF PAPER PULP FIBERS AS A CONTINUOUS LAYER ON THE SURFACE OF THE MOVING MEMBER, MOVING ANOTHER FORAMINOUS MEMBER CONTINOUSLY IN ONE DIRECTION AT A LINEAR SPEED CORRESPONDING TO THAT OF THE FIRST MEMBER AND WITH A PORTION THEREOF PASSING IN CLOSELY SPACED RELATION AND IN THE SAME DIRECTION WITH A PORTION OF THE FIRST MOVING MEMBER HAVING THE WET WEB OF PULP FIBERS ON THE SURFACE THEREOF, PASSING A STREAM OF AIR CONTAINING DRY FIBERS OF REINFORCING LENGTHS UNIFORMLY DISTRIBUTED THEREIN THROUGH THE FORAMINOUS MEMBER TO SEPARATE OUT DRY FIBERS OF REINFORCING LENGTHS IN UNIFORM DISTRIBUTION ON THE SURFACE THEREOF TO FORM AN ENDLESS WEB OF DRY FIBERS ON THE FORAMINOUS MEMBER, CONTACTING THE WEB OF WET PULP FIBERS WITH THE WEB OF DRY REINFORCING FIBERS AS THE MOVING MEMBER AND FORAMINOUS MEMBER TRAVEL IN THE SAME DIRECTION TOGETHER IN CLOSELY SPACED RELATION WITH EACH OTHER WHEREBY THE WEB OF DRY REINFORCING FIBERS IS PRESSED ONTO THE WEB OF WET PULP FIBERS AND IS COUCHED FROM THE FORAMINOUS MEMBER ONTO THE LAYER OF WEB FIBERS TO FORM THE TOP PLY ON THE LAYER OF WET PULP FIBERS, COMPRESSING THE FORMED LAYERS FOR CONSOLIDATION, AND THEN DRYING THE CONSOLIDATED LAYERS TO FORM A PAPER.
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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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |