Patent US20030004574A1 successfully refreshed from Google Patents.
US2657155A
Expired / Lapsed
US
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Process of forming an insoluble coating
Assignee: NAAMLOOZE VENOOTSCHAP W A SCHO
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Filing: 1948-05-28
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Granted: 1953-10-27
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Expires: 1968-05-28
Abstract
No abstract record available.
Inventors
- 👤 Lolkema Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
C; C09; C09D; C09D103/00; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/07; D06M15/09; D06M15/11; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS OF COATING A WATER INSOLUBLE, WATER REPELLENT COATING UPON THE SURFACE OF A BASE MATERIAL, COMPRISING, APPLYING AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF AN ACID SELECTED FROM THE GROUP CONSISTING OF STRACH ETHER CARBOXYLIC ACID AND STARCH ESTER CARBOXYLIC ACID TO SAID SURFACE OF SAID BASE AND THEREAFTER COATING THE SO TREATED BASE WITH AN AQUEOUS SOLUTION OF A POLYVALENT METAL SOLUBLE SALTS OF ALUMINUM, FERSISTING OF WATER SOLUBLE SALTS OF ALUMINUM, FERRIC IRON, CHROMIC CHROMIUM, AND TIN, AND FORMING A WATER INSOLUBLE SALT WITH THE ACID APPLIED IN THE FIRST COATING, SAID METAL SALT SOLUTION HAVING EMULSIFIED THEREIN A WATER REPELLENT PARAFFIN MATERIAL.
Claim 2
Dependent Claim
109 words
A PROCESS OF COATING A WATER INSOLUBLE, WATER REPELLENT COATING UPON THE SURFACE OF A BASE MATERIAL, COMPRISING, APPLYING AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF AN ACID SELECTED FROM THE GROUP CONSISTING OF STRACH ETHER CARBOXYLIC ACID AND STARCH ESTER CARBOXYLIC ACID TO SAID SURFACE OF SAID BASE AND THEREAFTER COATING THE SO TREATED BASE WITH AN AQUEOUS SOLUTION OF A POLYVALENT METAL SOLUBLE SALTS OF ALUMINUM, FERSISTING OF WATER SOLUBLE SALTS OF ALUMINUM, FERRIC IRON, CHROMIC CHROMIUM, AND TIN, AND FORMING A WATER INSOLUBLE SALT WITH THE ACID APPLIED IN THE FIRST COATING, SAID METAL SALT SOLUTION HAVING EMULSIFIED THEREIN A WATER REPELLENT PARAFFIN MATERIAL.
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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) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |