US3052644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment composition and process
Assignee: EIDP Inc
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Filing: 1959-01-12
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Granted: 1962-09-04
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 Edwards Webster Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:33
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/22; C09C1/24; C08; C08K; C08K9/00; C08K9/04; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/22; C01P2006/80; C01P2006/82; C01P2006/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
233 words
A HYDROPHOBIC COLLOIDAL HYDROUS IRON OXIDE PIGMENT COMPOSITION CONSISTING ESSENTIALLY OF COLLOIDAL HYDROUS IRON OXIDE PIGMENT PARTICLES HAVING A BOUND HYDROPHOBIC SURFACE LAYER, NON-EXTRACTABLE BY ORGANIC SOLVENT, OF A HYDROPHOBIC FATTY ACID COMPONENT THE COMPOSITION OF WHICH CONSISTS ESSENTIALLY OF AT LEAST ONE C6 TO C24 ALIPHATIC MONOCARBOXYLIC FATTY ACID INCLUDING A MAJOR WEIGHT PROPORTION OF AT LEAST ONE C8 TO C16 SATURATED ALIPHATIC MONOCARBOXYLIC FATTY ACID AND AN ADDITIONAL AMOUNT OF SAID HYDROPHOBIC FATTY ACID COMPONENT CORRESPONDING TO 0.4 TO 1.5% BY WEIGHT OF FREE STATE, ACETONE EXTRACTABLE HYDROPHOBIC FATTY ACID, EXPRESSED AS LAURIC ACID BASED ON THE TOTAL NON-VOLATILE CONTENT OF THE HYDROPHOBIC PIGMENT PRODUCT, THE TOTAL AMOUNT OF SAID FATTY ACID COMPONENT INCLUDING SAID ACETONE EXTRACTABLE FREE STATE PORTION AND SAID NON-EXTRACTABLE SURFACE BOUND PORTION CORRESPONDING TO A WEIGHT RATIO VALUE, EXPRESSED AS LAURIC ACID, ON THE ABSCISSA AXIS FOR A COORDINATE WITHIN THE AREA ACDF OF THE DRAWING AND SAID COLLOIDAL HYDROUS IRON OXIDE PIGMENT PARTICLES MINUS SAID SURFACE BOUND LAYER OF HYDROPHOBIC FATTY ACID COMPONENT, HAVING A SPECIFIC SURFACE AREA CORRESPONDING EMPRICALLY TO A CONTENT OF FREE STATE ACETONE EXTRACTABLE COCONUT OIL FATTY ACIDS, EXPRESSED AS LAURIC ACAID, IN THE RANGE OF ABOUT 0.4% TO 3.5% AT A PARTICLE SURFACE CHARACTERIZING RATIO OF 0.35 PART OF REFINED COCONUT OIL FATTY ACIDS PER PART DRY WEIGHT OF SAID COLLOIDAL PIGMENT AS DEFINED BY THE RDINATE AXIS OF SAID DRAWING.
Claim 2
Dependent Claim
129 words
A COMPATIBLE CLEAR PIGMENTED LIQUID COATING COMPOSITION CONSISTING ESSENTIALLY OF AN ORGANIC-SOLVENT-SOLUBLE FILM-FORMING, SYNTHETIC ORGANIC POLYMER, A VOLATILE LIQUID ORGANIC SOLVENT THEREFOR HAVING A PREPONDERANT PROPORTION OF A NON-POLAR ORGANIC SOLVENT, AND THE HYDROPHOBIC COLLOIDAL HYDROUS IRON OXIDE PIGMENT PRODUCT OF CLAIM 7, SAID HYDROPHOBICALLY SUSRFACED PIGMENT BEING PRESENT IN AN AMOUNT UP TO 1K% BY WEIGHT OF SAID COATING COMPOSITION AND AT A WEIGHT RATIO UP TO ONE PART OF SAID HYDROPHOBIC PIGMENT PER PART BY WEIGHT OF SAID FILMFORMING POLYMER, THE NON-VOLATILE CONTENT OF SAID COATING COMPOSITION BEING FROM 5% TO 70% BY WEIGHT, SAID FILMFORMING POLYMER BEING CHARACTERIZED AS CLEAR AND TRANSPARENT IN SOLUTION IN SAID LIQUID ORGANIC SOLVENT AT A USEFUL CONCENTRATION CORRESPONDING TO SAID NON-VOLATILE CONTENT OF SAID COATING COMPOSSITION MINUS THE PIGMENT CONTENT.
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |