Dihydrate process

Industry

CPC
C01B25/225

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CCHEMISTRY METALLURGY C01Inorganic chemistry C01BNON-METALLIC ELEMENTS COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C C01B25/00Phosphorus Compounds thereof

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C01B25/225Dihydrate process

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Patents Grantslast 30 patents

Information Patent Grant
Process waters in phosphate manufacturing
- Patent number 6,235,257
- Issue date May 22, 2001
- Gordon F. Palm
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphoric acid manufacturing with converted waters
- Patent number 5,316,748
- Issue date May 31, 1994
- Gordon F. Palm
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Removal of aluminum contamination during production of phosphoric acid
- Patent number 5,236,679
- Issue date Aug 17, 1993
- Freeport-McMoRan Resource Partners
- John W. Wen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of improving gypsum slurry filtration in the production of p...
- Patent number 5,211,928
- Issue date May 18, 1993
- Calgon Corporation
- Paul A. Rey
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Automatic control system for a phosacid attack tank and filter
- Patent number 5,188,812
- Issue date Feb 23, 1993
- IMC Fertilizer, Inc.
- Stephen W. Hilakos
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphoric acid wastewater treatment
- Patent number 5,171,452
- Issue date Dec 15, 1992
- Gordon F. Palm
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Apparatus for producing phosphoric acid from phosphate ore
- Patent number 5,093,088
- Issue date Mar 3, 1992
- Potash Corporation of Saskatchewan
- Gary D. Derdall
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Recovery and utilization of gypstack leachate in hemihydrate phosph...
- Patent number 5,084,261
- Issue date Jan 28, 1992
- Occidental Chemical Corporation
- Michael B. Caesar
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Crystal modification in wet process phosphoric acid production
- Patent number 5,009,873
- Issue date Apr 23, 1991
- Nalco Chemical Company
- E. Michael Kerr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Cleaning of filter surfaces
- Patent number 4,857,211
- Issue date Aug 15, 1989
- Rhone-Poulenc Chimie
- Guy Nineuil
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing phosphoric acid from phosphate ore
- Patent number 4,828,811
- Issue date May 9, 1989
- Potash Corporation of Saskatchewan
- Gary D. Derdall
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Filtration aids for removal of calcium solids from aqueous phosphor...
- Patent number 4,800,071
- Issue date Jan 24, 1989
- Nalco Chemical Company
- Ralph W. Kaesler
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Continuous process for preparing phosphoric acid and calcium sulphate
- Patent number 4,777,027
- Issue date Oct 11, 1988
- Prayon Developpment, Societe Anonyme
- Armand L. Davister
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for making wet-process phosphoric acid
- Patent number 4,683,127
- Issue date Jul 28, 1987
- Hoechst Aktiengesellschaft
- Friedrich Kolkmann
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Aluminum fluorophosphates made from impure phosphoric acids and con...
- Patent number 4,636,372
- Issue date Jan 13, 1987
- Occidental Chemical Agricultural Products, Inc.
- Elie Chemtob
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Production of phosphoric acid
- Patent number 4,557,915
- Issue date Dec 10, 1985
- Rhone-Poulenc Chimie de Base
- Guy Nineuil
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Recovery of uranium from a mixture of western uranium ore and phosp...
- Patent number 4,545,962
- Issue date Oct 8, 1985
- International Minerals & Chemical Corp.
- William W. Berry
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for producing HF from impure phosphoric acids
- Patent number 4,505,884
- Issue date Mar 19, 1985
- Occidental Research Corporation
- Elie M. Chemtob
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for the wet process manufacture of phosphoric acid
- Patent number 4,501,724
- Issue date Feb 26, 1985
- Goers Associates Inc.
- Walter E. Goers
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing wet process phosphoric acid from phosphate ro...
- Patent number 4,485,078
- Issue date Nov 27, 1984
- Agrico Chemical Company
- Charles W. Weston
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for conducting wet grinding of phosphate rock in a phosphori...
- Patent number 4,485,077
- Issue date Nov 27, 1984
- The Badger Company, Inc.
- John L. Martinez
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Production of phosphoric acid and additional products from phosphat...
- Patent number 4,479,923
- Issue date Oct 30, 1984
- Pennzoil Company
- John B. Sardisco
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for improving filterability of gypsum and wet process phosph...
- Patent number 4,439,407
- Issue date Mar 27, 1984
- Agrico Chemical Company
- Kenneth L. Parks
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Preparation of monocalcium phosphate and/or phosphoric acid from ph...
- Patent number 4,435,370
- Issue date Mar 6, 1984
- Pennzoil Company
- Dysart E. Holcomb
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Phosphohemihydrate process for purification of gypsum
- Patent number 4,424,196
- Issue date Jan 3, 1984
- United States Gypsum Company
- Jay W. Palmer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for treating phospho-gypsum waste product from wet-acid pro...
- Patent number 4,415,543
- Issue date Nov 15, 1983
- Eddie K. Wilson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Production of phosphoric acid and additional products from phosphat...
- Patent number 4,393,032
- Issue date Jul 12, 1983
- Pennzoil Company
- Erhart K. Drechsel
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Foam control during production of phosphoric acid
- Patent number 4,391,784
- Issue date Jul 5, 1983
- Richard N. Hill
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for reducing aluminum and fluorine in phosphoric acids
- Patent number 4,379,776
- Issue date Apr 12, 1983
- Occidental Research Corporation
- Gary L. Beer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for the control of excessive corrosion in phosphoric acid ci...
- Patent number 4,367,197
- Issue date Jan 4, 1983
- J.R. SIMPLOT COMPANY
- Gary L. Long
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Dihydrate process

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Process waters in phosphate manufacturing

Phosphoric acid manufacturing with converted waters

Removal of aluminum contamination during production of phosphoric acid

Method of improving gypsum slurry filtration in the production of p...

Automatic control system for a phosacid attack tank and filter

Phosphoric acid wastewater treatment

Apparatus for producing phosphoric acid from phosphate ore

Recovery and utilization of gypstack leachate in hemihydrate phosph...

Crystal modification in wet process phosphoric acid production

Cleaning of filter surfaces

Method for producing phosphoric acid from phosphate ore

Filtration aids for removal of calcium solids from aqueous phosphor...

Continuous process for preparing phosphoric acid and calcium sulphate

Process for making wet-process phosphoric acid

Aluminum fluorophosphates made from impure phosphoric acids and con...

Production of phosphoric acid

Recovery of uranium from a mixture of western uranium ore and phosp...

Process for producing HF from impure phosphoric acids

Method for the wet process manufacture of phosphoric acid

Process for producing wet process phosphoric acid from phosphate ro...

Method for conducting wet grinding of phosphate rock in a phosphori...

Production of phosphoric acid and additional products from phosphat...

Method for improving filterability of gypsum and wet process phosph...

Preparation of monocalcium phosphate and/or phosphoric acid from ph...

Phosphohemihydrate process for purification of gypsum

Process for treating phospho-gypsum waste product from wet-acid pro...

Production of phosphoric acid and additional products from phosphat...

Foam control during production of phosphoric acid

Process for reducing aluminum and fluorine in phosphoric acids

Method for the control of excessive corrosion in phosphoric acid ci...

Patents Applicationslast 30 patents