US2998328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating and method of producing same
Assignee: Amercoat Corp
•
Filing: 1957-07-22
•
Granted: 1961-08-29
•
Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Charles G Munger
- 👤 Daniel H Gelfer
- 👤 Abba Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:11
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF PRODUCING A HARD INSOLUBLE PIGMENTED FINISH ON A FERROUS METAL SURFACE WHICH COMPRISES FIRST APPLYING TO SAID SURFACE A PROTECTIVE COATING OF THE SILICATE FINELY DIVIDED METAL TYPE, ALLOWING SAID COATING TO DRY, AND THEN APPLYING A SUPPLEMENTAL COATING OBTAINED BY ADMIXING FROM 50 TO 90 PARTS BY WEIGHT OF AN AQUEOUS SOLUTION OF LOW ALKALINE ALKALI METAL SILICATE HAVING A SPECIFIC GRAVITY BETWEEN ABOUT 1.3 AND 1.4 WITH 100 PARTS BY WEIGHT OF AN AQUEOUS PASTE PIGMENTED COMPONENT INCLUDING FROM 42 TO 72 PARTS BY WEIGHT OF WATER, FROM 25 TO 40 PARTS BY WEIGHT OF AN INORGANIC PIGMENTED COMPONENT INSOLUBLE IN SAID SODIUM SILICATE, FROM 10 TO 20 PARTS BY WEIGHT OF FINELY DIVIDED FILLER, AND FROM 0.1 TO 5.0 PARTS BY WEIGHT OF A WATER SOLUBLE METAL SALT CAPABLE OF REACTING WITH SAID SODIUM SILICATE TO YEILD A HARD INSOLUBLE COATING WHEN APPLIED TO SAID SILICATE OUTER SURFACE, UNTIL A SMOOTH SUSPENSION IS OBTAINED.
Claim 2
Independent Claim
160 words
A METHOD OF PRODUCING A HARD INSOLUBLE PIGMENTED FINISH ON A FERROUS METAL SURFACE WHICH COMPRISES FIRST APPLYING TO SAID SURFACE A PROTECTIVE COATING OF THE SILICATE FINELY DIVIDED METAL TYPE, ALLOWING SAID COATING TO DRY, AND THEN APPLYING A SUPPLEMENTAL COATING OBTAINED BY ADMIXING FROM 50 TO 90 PARTS BY WEIGHT OF AN AQUEOUS SOLUTION OF LOW ALKALINE ALKALI METAL SILICATE HAVING A SPECIFIC GRAVITY BETWEEN ABOUT 1.3 AND 1.4 WITH 100 PARTS BY WEIGHT OF AN AQUEOUS PASTE PIGMENTED COMPONENT INCLUDING FROM 42 TO 72 PARTS BY WEIGHT OF WATER, FROM 25 TO 40 PARTS BY WEIGHT OF AN INORGANIC PIGMENTED COMPONENT INSOLUBLE IN SAID SODIUM SILICATE, FROM 10 TO 20 PARTS BY WEIGHT OF FINELY DIVIDED FILLER, AND FROM 0.1 TO 5.0 PARTS BY WEIGHT OF A WATER SOLUBLE METAL SALT CAPABLE OF REACTING WITH SAID SODIUM SILICATE TO YEILD A HARD INSOLUBLE COATING WHEN APPLIED TO SAID SILICATE OUTER SURFACE, UNTIL A SMOOTH SUSPENSION IS OBTAINED.
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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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |