Patent US2817155A successfully refreshed from Google Patents.
US2817155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for evaporating nitraphosphate slurries
Assignee: Honeywell International Inc
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Filing: 1955-04-27
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Granted: 1957-12-24
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 George R Gilliam
- 👤 Joseph A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:48
CPC Classifications
C; C05; C05B; C05B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE PROCESS OF EVAPORATING WATER FROM AN AMMOUIATED NITRAPHOSPHATE SLURRY CONTAINING 12% TO 50% WATER WHICH COMPRISES PASSING SAID SLURRY AS A FILM NO GREATER THAN ABOUT 0.25" THICK FLOWING OVER AND IN CONTACT WITH THE INNER HEAT TRANSFER SURFACE OF TUBULAR HEAT TRANSFER MEANS TO WHICH HEAT IS SUPPLIED FROM A HEATING MEDIUM AT TEMPERATURE OF 130* C. TO 250* C., FEEDING THESLURRY TO SAID HEAT TRANSFER SURFACES AT THE RATE OF ABOUT 600 LBS. TO ABOUT 3000 LBS OF SLURRY/HOURS/PERIMETRIC FOOT OF HEAT TRANSFFER SURFACE, AND SUBJECTING THE FREE SURFACE OF THE FLOWING FLIM TO A TURBULENT ACTION BY SOLID SURFACES PRESENTING A FORWARD FACE ADJACENT THE SLURRY FILM WHICH IS SUSTANTIALLY PERPENDICULAR TO THE FILM SURFACE AND MOVES ALONG THE FLIM SURFACE TRANSVERSELY OF THE DIRECTION OF FLOW OF THE FILM AT A RATE OF 10 FT/SEC. TO 60 FT/SEC.
Claim 2
Dependent Claim
143 words
THE PROCESS OF EVAPORATING WATER FROM AN AMMOUIATED NITRAPHOSPHATE SLURRY CONTAINING 12% TO 50% WATER WHICH COMPRISES PASSING SAID SLURRY AS A FILM NO GREATER THAN ABOUT 0.25" THICK FLOWING OVER AND IN CONTACT WITH THE INNER HEAT TRANSFER SURFACE OF TUBULAR HEAT TRANSFER MEANS TO WHICH HEAT IS SUPPLIED FROM A HEATING MEDIUM AT TEMPERATURE OF 130* C. TO 250* C., FEEDING THESLURRY TO SAID HEAT TRANSFER SURFACES AT THE RATE OF ABOUT 600 LBS. TO ABOUT 3000 LBS OF SLURRY/HOURS/PERIMETRIC FOOT OF HEAT TRANSFFER SURFACE, AND SUBJECTING THE FREE SURFACE OF THE FLOWING FLIM TO A TURBULENT ACTION BY SOLID SURFACES PRESENTING A FORWARD FACE ADJACENT THE SLURRY FILM WHICH IS SUSTANTIALLY PERPENDICULAR TO THE FILM SURFACE AND MOVES ALONG THE FLIM SURFACE TRANSVERSELY OF THE DIRECTION OF FLOW OF THE FILM AT A RATE OF 10 FT/SEC. TO 60 FT/SEC.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |