US3113065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded fibreboard and the process of making the same
Assignee: Building Products Ltd
•
Filing: 1961-06-12
•
Granted: 1963-12-03
•
Expires: 1981-06-12
Abstract
No abstract record available.
Inventors
- 👤 Leslie J Newton
- 👤 Jong Cornelis De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:03
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/76; D21H23/765; D21H17/00; D21H17/20; D21H17/21; D21H17/22; D21H17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE PROCESS OF MANUFACTURING FIBREBOARD WHICH COMPRISES FORMING A SLURRY OF FIBERS OF APPROXIMATELY 3.5% SOLIDS, ADJUSTING THE PH OF SAID SLURRY WITH ALKALI TO A VALUE BETWEEN 6.5 AND 10.0, ADDING AN ACID SENSITIVE COLLOID PROTEIN SOLUTION OF FROM 0.1% TO ABOUT 5.0% BY WEIGHT OF DRY FIBRE AND AN ACID SENSITIVE WAX EMULSION OF FROM 0.1 TO 5.0% BY WEIGHT OF DRY FIBRES IN THE SLURRY AND A RESIN BINDER OF BETWEEN 10% AND 35% OF THE TOTAL WEIGHT OF DRY FIBRE PLUS THE RESIN BINDER, TREATING THE RESULTING SLURRY TO BRING THE PH VALUE THEREOF TO A VALUE OF BETWEEN 4.0 AND 6.0, FORMING THE SLURRY INTO A BOARD, SUBJECTING THE FORMED BOARD TO HOT PRESSING AND, WHILE THE BOARD IS STILL HOT, APPLYING PAINT THERETO, AND SUBJECTING THE PAINTED BOARD TO A WATER SPRAY.
Claim 2
Dependent Claim
138 words
THE PROCESS OF MANUFACTURING FIBREBOARD WHICH COMPRISES FORMING A SLURRY OF FIBERS OF APPROXIMATELY 3.5% SOLIDS, ADJUSTING THE PH OF SAID SLURRY WITH ALKALI TO A VALUE BETWEEN 6.5 AND 10.0, ADDING AN ACID SENSITIVE COLLOID PROTEIN SOLUTION OF FROM 0.1% TO ABOUT 5.0% BY WEIGHT OF DRY FIBRE AND AN ACID SENSITIVE WAX EMULSION OF FROM 0.1 TO 5.0% BY WEIGHT OF DRY FIBRES IN THE SLURRY AND A RESIN BINDER OF BETWEEN 10% AND 35% OF THE TOTAL WEIGHT OF DRY FIBRE PLUS THE RESIN BINDER, TREATING THE RESULTING SLURRY TO BRING THE PH VALUE THEREOF TO A VALUE OF BETWEEN 4.0 AND 6.0, FORMING THE SLURRY INTO A BOARD, SUBJECTING THE FORMED BOARD TO HOT PRESSING AND, WHILE THE BOARD IS STILL HOT, APPLYING PAINT THERETO, AND SUBJECTING THE PAINTED BOARD TO A WATER SPRAY.
References Cited (Backward Citations)
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Cited
US1773201A
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US1956053A
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US2133693A
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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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |