Patent US2621115A successfully refreshed from Google Patents.
US2621115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous blueing and dustproofing of solid carboniferous fuels
Assignee: Wyeth Holdings LLC
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Filing: 1950-06-21
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Granted: 1952-12-09
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Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Robert Bruce Van Order
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:42
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A PROCESS FOR THE SIMULTANEOUS "BLUEING" AND DUSTPROOFING OF A SOLID CARBONIFEROUS FUEL WHICH COMPRISES FORMING AN OIL-IN-WATER EMULSION FROM AN ULTRAMARINE, A WATER-INSOLUBLE OIL HAVING AN INDEX OF REFRACTION BETWEEN 1.35 AND 1.75, A WATER-DISPERSIBLE EMULSIFYING AGENT SELECTED FROM THE GROUP OF ANIONIC AND NON-IONIC EMULSIFYING AGENTS, AND WATER, SAID OIL BEING IN THE DISPERSED PHASE AND SAID ULTRAMARINE BEING IN THE CONTINUOUS PHASE OF SAID EMULSION, AND SPRAYING SAID FUEL WITH SAID EMULSION AT A PREDETERMINED RATE TO DEPOSIT ON SAID FUEL A QUANTITY OF ULTRAMARINE AMOUNTING TO AT LEAST 0.00005 OF THE WEIGHT OF SAID FUEL, THE WEIGHT OF SAID OIL IN SAID EMULSION BEING NOT GREATER THAN ABOUT 150% OF THE WEIGHT OF SAID ULTRAMARINE AND THE WEIGHT OF SAID WATER IN SAID EMULSION BEING AT LEAST ABOUT 250% OF THE WEIGHT OF THE OTHER CONSTITUENTS OF SAID EMULSION, AND SAID EMULSION BEING CHARACTERIZED BY AN INSTABILITY WHICH RESULTS IN PHASE SEPARATION UPON STANDING.
Claim 2
Dependent Claim
158 words
A PROCESS FOR THE SIMULTANEOUS "BLUEING" AND DUSTPROOFING OF A SOLID CARBONIFEROUS FUEL WHICH COMPRISES FORMING AN OIL-IN-WATER EMULSION FROM AN ULTRAMARINE, A WATER-INSOLUBLE OIL HAVING AN INDEX OF REFRACTION BETWEEN 1.35 AND 1.75, A WATER-DISPERSIBLE EMULSIFYING AGENT SELECTED FROM THE GROUP OF ANIONIC AND NON-IONIC EMULSIFYING AGENTS, AND WATER, SAID OIL BEING IN THE DISPERSED PHASE AND SAID ULTRAMARINE BEING IN THE CONTINUOUS PHASE OF SAID EMULSION, AND SPRAYING SAID FUEL WITH SAID EMULSION AT A PREDETERMINED RATE TO DEPOSIT ON SAID FUEL A QUANTITY OF ULTRAMARINE AMOUNTING TO AT LEAST 0.00005 OF THE WEIGHT OF SAID FUEL, THE WEIGHT OF SAID OIL IN SAID EMULSION BEING NOT GREATER THAN ABOUT 150% OF THE WEIGHT OF SAID ULTRAMARINE AND THE WEIGHT OF SAID WATER IN SAID EMULSION BEING AT LEAST ABOUT 250% OF THE WEIGHT OF THE OTHER CONSTITUENTS OF SAID EMULSION, AND SAID EMULSION BEING CHARACTERIZED BY AN INSTABILITY WHICH RESULTS IN PHASE SEPARATION UPON STANDING.
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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |