Hemihydrate process

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CPC
C01B25/226

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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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C01B25/226Hemihydrate process

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Patents Grantslast 30 patents

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
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
Process for the removal of heavy metals from acid, phosphate-contai...
- Patent number 4,822,582
- Issue date Apr 18, 1989
- Stamicarbon B.V.
- Cornelis A. M. Weterings
- C05 - FERTILISERS MANUFACTURE THEREOF
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
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
Production of purified strong wet-process phosphoric acid
- Patent number 4,435,372
- Issue date Mar 6, 1984
- Tennessee Valley Authority
- Alva W. Frazier
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method of recovering uranium from wet process phosphoric acid with...
- Patent number 4,427,641
- Issue date Jan 24, 1984
- Central Glass Company Limited
- Seizi Yoshikawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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...
Information Patent Grant
Apparatus for reacting a particulate solid and a liquid
- Patent number 4,363,786
- Issue date Dec 14, 1982
- Occidental Chemical Corp.
- Allen S. Adams
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for production of high purity phosphoric acid from high alu...
- Patent number 4,284,614
- Issue date Aug 18, 1981
- Occidental Petroleum Corp.
- Fernando Ore
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Methods for the control of excessive corrosion in phosphoric acid c...
- Patent number 4,277,454
- Issue date Jul 7, 1981
- J. R. Simplot Company
- Gary L. Long
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Start-up procedure in producing phosphoric acid by the hemihydrate...
- Patent number 4,276,270
- Issue date Jun 30, 1981
- Occidental Research Corporation
- F. Michael Gragg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Apparatus useful for wet process phosphoric acid production
- Patent number 4,260,584
- Issue date Apr 7, 1981
- Occidental Petroleum Corporation
- Fernando Ore
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
System for phosphoric acid production with decreased foaming
- Patent number 4,258,008
- Issue date Mar 24, 1981
- Occidental Research Corporation
- Fredrick M. Gragg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Feed system for phosphoric acid production with decreased foaming
- Patent number 4,258,007
- Issue date Mar 24, 1981
- Occidental Research Corporation
- F. Michael Gragg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for preventing the formation of calcium sulphate scale
- Patent number 4,221,769
- Issue date Sep 9, 1980
- Fisons Limited
- Douglas C. Harper
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Hemihydrate type process for phosphoric acid manufacture using addi...
- Patent number 4,220,630
- Issue date Sep 2, 1980
- Occidental Petroleum Corporation
- Fernando N. Ore'
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hemihydrate type phosphoric acid process
- Patent number 4,196,172
- Issue date Apr 1, 1980
- Occidental Petroleum Corporation
- Fernando N. Ore
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for reducing formation of gypsum scale durng the washing of...
- Patent number 4,049,774
- Issue date Sep 20, 1977
- Fisons Limited
- Douglas Charles Harper
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of preventing gypsum scale formation in phosphoric acid plan...
- Patent number 3,972,981
- Issue date Aug 3, 1976
- Fisons Limited
- Douglas Charles Harper
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
3792151
- Patent number 3,792,151
- Issue date Feb 12, 1974
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3619136
- Patent number 3,619,136
- Issue date Nov 9, 1971
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
2885264
- Patent number 2,885,264
- Issue date May 5, 1959
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
2338407
- Patent number 2,338,407
- Issue date Jan 4, 1944
- C01 - INORGANIC CHEMISTRY

Hemihydrate process

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

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

Method for producing phosphoric acid from phosphate ore

Process for the removal of heavy metals from acid, phosphate-contai...

Continuous process for preparing phosphoric acid and calcium sulphate

Process for making wet-process phosphoric acid

Method for the wet process manufacture of phosphoric acid

Production of purified strong wet-process phosphoric acid

Method of recovering uranium from wet process phosphoric acid with...

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

Apparatus for reacting a particulate solid and a liquid

Process for production of high purity phosphoric acid from high alu...

Methods for the control of excessive corrosion in phosphoric acid c...

Start-up procedure in producing phosphoric acid by the hemihydrate...

Apparatus useful for wet process phosphoric acid production

System for phosphoric acid production with decreased foaming

Feed system for phosphoric acid production with decreased foaming

Process for preventing the formation of calcium sulphate scale

Hemihydrate type process for phosphoric acid manufacture using addi...

Hemihydrate type phosphoric acid process

Process for reducing formation of gypsum scale durng the washing of...

Method of preventing gypsum scale formation in phosphoric acid plan...

3792151

3619136

2885264

2338407

Patents Applicationslast 30 patents