US2632743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant coating composition for fiberboard and the like
Assignee: Armstrong World Industries Inc
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Filing: 1952-01-19
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Granted: 1953-03-24
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Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
C; C09; C09D; C09D103/00; C09D103/02; C09D5/00; C09D5/18; C09D5/185; D; D21; D21J; D21J1/00; D21J1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF TREATING ORGANIC FIBROUS MATERIAL TO RENDER THE SAME FIRE-RESISTANT COMPRISING APPLYING TO SAID MATERIAL A COMPOSITION COMPRISING A WATER DISPERSION OF (1) MONOCALCIUM PHOSPHATE WHICH IS UNREACTED AND CHEMICALLY STABLE IN SAID DISPERSION AND (2) FROM 1 TO 3 PARTS BY WEIGHT OF AN AMYLACEOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF THIN BOILING STARCH, PEARL STARCH, AND MIXTURES THEREOF FOR EACH PART BY WEIGHT OF UNREACTED MONOCALCIUM PHOSPHATE, AND REMOVING WATER FROM SAID COMPOSITION TO BOND THE DRIED RESIDUE OF SAID COMPOSITION TO SAID MATERIAL.
Claim 2
Independent Claim
132 words
A METHOD OF TREATING FIBERBOARD AND THE LIKE TO RENDER THE SAME FIRE-RESISTANT COMPRISING APPLYING TO A SURFACE OF SAID MATERIAL A COMPOSITION COMPRISING A WATER DISPERSION OF (1) MONOCALCIUM PHOSPHATE WHICH IS UNREACTED AND CHEMICALLY STABLE IN SAID DISPERSION, (2) FROM 1 TO 3 PARTS BY WEIGHT OF AN AMYLACEOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF THIN BOILING STARCH, PEARL STARCH, AND MIXTURES THEREOF FOR EACH PART BY WEIGHT OF UNREACTED MONOCALCIUM PHOSPHATE, AND (3) A RESINOUS BINDER SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDE ALDEHYDE, UREA ALDEHYDE, PHENOL ALDEHYDE, AND MELAMINE ALDEHYDE, AND HEATING SAID COATED MATERIAL BY EXPOSING THE COATING COMPOSITION TO A TEMPERATURE THE EQUIVALENT OF ABOUT 350* F. FOR ABOUT FOUR MINUTES TO REMOVE WATER THEREFROM, ACTIVATE SAID RESINOUS BINDER, AND RENDER SAID COATING COMPOSITION WASHABLE.
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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |