US3084092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sized paper manufacture
Assignee: Wyeth Holdings LLC
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Filing: 1959-06-16
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Granted: 1963-04-02
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Expires: 1979-06-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert G Arlt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF MANUFACTURING PAPER OF HIGH RESISTANCE TO PENETRATION BY AQUEOUS LACTIC ACID SOLUTION, WHICH COMPRISES FORMING AN AQUEOUS SUSPENSION OF PAPERMAKING FIBERS ADSORBING AN AMINO RESIN ON SAID FIBERS AS ANCHOR AGENT FOR THE ISOCYANATE TO BE ADDED, AN AQUEOUS ANIOMIC EMULSION OF A HYDROPHOBIC ORGANIC ISOCYANATE, SHEETING SAID FIBERS TO FORM A WATERLAID WEB, AND HEATING SAID WEB AT A TEMPERATURE BETWEEN 190*F. AND 260*F. FOR UP TO ABOUT 3 MINUTES THEREBY DRYING THE PAPER AND SIMULATNEOUSLY SUBSTANTIALLY DEVELOPING THE SIZING PROPERTIES OF THE ISOCYANATE THEREON.
Claim 2
Independent Claim
89 words
A METHOD OF MANUFACTURING PAPER OF HIGH RESISTANCE TO PENETRATION BY AQUEOUS LACTIC ACID SOLUTION, WHICH COMPRISES FORMING AN AQUEOUS SUSPENSION OF PAPERMAKING FIBERS ADSORBING AN AMINO RESIN ON SAID FIBERS AS ANCHOR AGENT FOR THE ISOCYANATE TO BE ADDED, AN AQUEOUS ANIOMIC EMULSION OF A HYDROPHOBIC ORGANIC ISOCYANATE, SHEETING SAID FIBERS TO FORM A WATERLAID WEB, AND HEATING SAID WEB AT A TEMPERATURE BETWEEN 190*F. AND 260*F. FOR UP TO ABOUT 3 MINUTES THEREBY DRYING THE PAPER AND SIMULATNEOUSLY SUBSTANTIALLY DEVELOPING THE SIZING PROPERTIES OF THE ISOCYANATE THEREON.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |