Patent US2904744A successfully refreshed from Google Patents.
Patent US3223546A successfully refreshed from Google Patents.
US3223546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color-reactable inorganic adsorbent pigment and coating composition containing the same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1962-01-17
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Granted: 1965-12-14
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Expires: 1982-01-17
Abstract
No abstract record available.
Inventors
- 👤 Glen A Hemstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; B41M5/1555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN IMPROVED SENSITIZED COLOR-REACTABLE ADSORBENT PIGMENT COMPOSITION ADAPTED FOR USE IN TRANSFER PRINTING WITH A MIXTURE OF BENZOYL LEUCO METHYLENE BLUE AND CRYSTAL VIOLET LACTONE COMPRISING A MIXTURE OF: A MAJOR WEIGHT PROPORTIN OF HEAT ACTIVATED ATTAPULGITE CLAY AND A MINOR WEIGHT PROPORTION OF A WHITE ALUMINUM SILICATE HAVING A B.E.T. SURFACE AREA OF AT LEAST ABOUT 120 SQ. M./GM., SAID ALUMINUM SILICATE HAVING BEEN OBTAINED BY CALCINING KAOLIN CLAY AT A TEMPERATURE AND FOR A TIME TO PRODUCE METAKAOLIN, COOLING SAID METAKAOLIN TO A TEMPERATURE BELOW ABOUT 125*C., AND SUBJECTING SAID METAKAOLIN TO HYDROTHERMAL TREATMENT AT SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE AND FOR A TIME SELECTED TO CONVERT SAID METAKAOLIN INTO AN AMORPHOUS ALUMINUM SILICATE OF THE APPROXIMATE FORMULA AL2O3$2SIO2 (1.4-1.7 H2O).
Claim 2
Dependent Claim
123 words
AN IMPROVED SENSITIZED COLOR-REACTABLE ADSORBENT PIGMENT COMPOSITION ADAPTED FOR USE IN TRANSFER PRINTING WITH A MIXTURE OF BENZOYL LEUCO METHYLENE BLUE AND CRYSTAL VIOLET LACTONE COMPRISING A MIXTURE OF: A MAJOR WEIGHT PROPORTIN OF HEAT ACTIVATED ATTAPULGITE CLAY AND A MINOR WEIGHT PROPORTION OF A WHITE ALUMINUM SILICATE HAVING A B.E.T. SURFACE AREA OF AT LEAST ABOUT 120 SQ. M./GM., SAID ALUMINUM SILICATE HAVING BEEN OBTAINED BY CALCINING KAOLIN CLAY AT A TEMPERATURE AND FOR A TIME TO PRODUCE METAKAOLIN, COOLING SAID METAKAOLIN TO A TEMPERATURE BELOW ABOUT 125*C., AND SUBJECTING SAID METAKAOLIN TO HYDROTHERMAL TREATMENT AT SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE AND FOR A TIME SELECTED TO CONVERT SAID METAKAOLIN INTO AN AMORPHOUS ALUMINUM SILICATE OF THE APPROXIMATE FORMULA AL2O3$2SIO2 (1.4-1.7 H2O).
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |