US2986478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making flameproofed, water-resistant paper
Assignee: Albemarle Paper Manufacturing Co
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Filing: 1958-10-29
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Granted: 1961-05-30
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Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Charles R Outterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:17
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; D21H17/00; D21H17/60; D21H17/62; D21H17/63; D21H17/66; D21H5/00; D21H5/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR FLAMEPROOFING PAPER WHICH COMPRISES IMPREGNATING A PAPER SHEET WITH AN AQUEOUS SUSPENSION OF BLENDED ROSIN AND PETROLEUM WAX IN THE FORM OF PATTICLES, EACH OF SAID PARTICLES CONSISTING ESSENTIALLY OIF SAID ROSIN AND PETROLEUM WAX IN INTIMATELY BLENDED ADMIXTURE IN A SOLUTION OF WATER-SOLUBLE FLAMEPROOFING SALTS, THE FLAMEPROOFING SALTS BEING INCORPORATED IN THE PAPER IN AN AMOUNT SUFFICIENT TO RENDER SAID PAPER SUBSTANTIALLY FLAMEPROOF, SAID ROSIN-PETROLEUM WAX BLEND BEING INCORPORATED IN THE PAPER IN AN AMOUNT SUFFICIENT TO IMPART SUBSTANTIAL ATER RESISTANCE TO SAID WATER-SOLUBLE SALTS, AND THEN DRYING THE PAPER.
Claim 2
Dependent Claim
94 words
A PROCESS FOR FLAMEPROOFING PAPER WHICH COMPRISES IMPREGNATING A PAPER SHEET WITH AN AQUEOUS SUSPENSION OF BLENDED ROSIN AND PETROLEUM WAX IN THE FORM OF PATTICLES, EACH OF SAID PARTICLES CONSISTING ESSENTIALLY OIF SAID ROSIN AND PETROLEUM WAX IN INTIMATELY BLENDED ADMIXTURE IN A SOLUTION OF WATER-SOLUBLE FLAMEPROOFING SALTS, THE FLAMEPROOFING SALTS BEING INCORPORATED IN THE PAPER IN AN AMOUNT SUFFICIENT TO RENDER SAID PAPER SUBSTANTIALLY FLAMEPROOF, SAID ROSIN-PETROLEUM WAX BLEND BEING INCORPORATED IN THE PAPER IN AN AMOUNT SUFFICIENT TO IMPART SUBSTANTIAL ATER RESISTANCE TO SAID WATER-SOLUBLE SALTS, AND THEN DRYING THE PAPER.
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |