US2591245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum paste pigment
Assignee: Alcoa Corp
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Filing: 1948-08-11
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Granted: 1952-04-01
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Expires: 1968-08-11
Abstract
No abstract record available.
Inventors
- 👤 Junius D Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/62; C09C1/64; C09C1/644; C09C1/646; C01; C01P; C01P2004/00; C01P2004/20; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
AN ALUMINUM PASTE PIGMENT FORMULATION COMPRISING A MAIN BODY OF LEAFING ALUMINUM FLAKES CONSTITUTING FROM 68 TO 85 PER CENT OF THE PASTE, ABOUT 14 TO 28 PER CENT MINERAL SPIRITS, AND AT LEAST ONE LEAFING AGENT OF THE GROUP CONSISITING OF STEARIC AND PALMITIC ACIDS, SAID LEAFING AGENT HAVING BEEN ADDED AT LEAST IN PART IN SOLID PHASE IN AMOUNTS BETWEEN 1.0 TO 4.0 PER CENT OF THE TOTAL WEIGHT OF THE PIGMENT FORMULATION AND THE PASTE FORMULATION WET POLISHED FOR A PERIOD OF ABOUT 1 TO 12 HOURS AT A TEMPERATURE BELOW ABOUT 110* F., AND SAID PIGMENT FORMULATION BEING CHARACTERIZED BY IMPROVED STABILITY, BRIGHTNESS AND SPECULAR REFLECTIVITY.
References Cited (Backward Citations)
US2144953A
Cited
US2193663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |