Patent US2641558A successfully refreshed from Google Patents.
US2641558A
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Water repellence fixative treatment
Assignee: NL Industries Inc
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Filing: 1948-12-24
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Granted: 1953-06-09
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Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Stephen F Urban
- 👤 Warren B Blumenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/16; D06; D06M; D06M11/00; D06M11/73; D06M11/76; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T428/31996; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2197
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR INDUCING WATER REPELLANCE IN CELLULOSIC FIBROUS MATERIALS WHICH COMPRISES IMMERSING THE FIBROUS MATERIAL IN AN AQUEOUS BATH CONTAINING AMMONIUM DICARBONATO ZIRCONYLATE AND A WATER SOLUBLE SOAP, AND THEREAFTER IMMERSING SAID SO TREATED MATERIAL IN AN AQUEOUS SOLUTION CONTAINING A SALT WHICH YIELDS A CATION OF A METAL SELECTED FROM THE GROUP OF METALS OF GROUPS THREE, FOUR AND EIGHT OF MENDELEEFF''S PERIODIC ARRANGEMENT OF THE ELEMENTS, THEN RINSING AND DRYING THE MATERIAL.
Claim 2
Dependent Claim
75 words
A PROCESS FOR INDUCING WATER REPELLANCE IN CELLULOSIC FIBROUS MATERIALS WHICH COMPRISES IMMERSING THE FIBROUS MATERIAL IN AN AQUEOUS BATH CONTAINING AMMONIUM DICARBONATO ZIRCONYLATE AND A WATER SOLUBLE SOAP, AND THEREAFTER IMMERSING SAID SO TREATED MATERIAL IN AN AQUEOUS SOLUTION CONTAINING A SALT WHICH YIELDS A CATION OF A METAL SELECTED FROM THE GROUP OF METALS OF GROUPS THREE, FOUR AND EIGHT OF MENDELEEFF''S PERIODIC ARRANGEMENT OF THE ELEMENTS, THEN RINSING AND DRYING THE MATERIAL.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |