US2769721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment compositions
Assignee: Rochester Button Co
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Filing: 1952-09-29
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Granted: 1956-11-06
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Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Frankl Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0015; C09C1/0021; C09C1/0018; C09C2200/00; C09C2200/10; C09C2200/1087; C09C2200/40; C09C2200/402; C09C2200/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF MAKING READILY DISPERSIBLE DRY LAMELLAR PEARLESCENT PIGMENT COMPOSITIONS WHICH COMPRISES ADDING A WERNER TYPE COMPLEX COMPOUND OF TRIVALENT CHROMINUM WITH AN ALIPHATIC CARBOXYLIC ACID OF THE GROUP CONSISTING OF ALPHA, BETA UNSATURATED ALIPHATIC CARBOXYLIC ACIDS CONTAINING FROM 2 TO 6 CARBON ATOMS IN THE ALIPHATIC CHAIN AND LONG CHAIN FATTY ACIDS CONTAINING FROM 10 TO 20 CARBON ATOMS TO AN AQUEOUS DISPERSION OF A LAMELLAR PEARLESCENT PIGMENT SELECTED FROM THE GROUP CONSISTING OF ACID LEAD PHOSPHATE AND ACID LEAD ARSENATE AND THEREAFTER SEPARATING THE PIGMENT FROM THE DISPERSION AND DRYING THE PIGMENT.
Claim 2
Independent Claim
95 words
A METHOD OF MAKING READILY DISPERSIBLE DRY LAMELLAR PEARLESCENT PIGMENT COMPOSITIONS WHICH COMPRISES ADDING A WERNER TYPE COMPLEX COMPOUND OF TRIVALENT CHROMINUM WITH AN ALIPHATIC CARBOXYLIC ACID OF THE GROUP CONSISTING OF ALPHA, BETA UNSATURATED ALIPHATIC CARBOXYLIC ACIDS CONTAINING FROM 2 TO 6 CARBON ATOMS IN THE ALIPHATIC CHAIN AND LONG CHAIN FATTY ACIDS CONTAINING FROM 10 TO 20 CARBON ATOMS TO AN AQUEOUS DISPERSION OF A LAMELLAR PEARLESCENT PIGMENT SELECTED FROM THE GROUP CONSISTING OF ACID LEAD PHOSPHATE AND ACID LEAD ARSENATE AND THEREAFTER SEPARATING THE PIGMENT FROM THE DISPERSION AND DRYING THE PIGMENT.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |