Douglas O. Hauge

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Lafayette, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Phosphoric acid production
- Patent number 4,309,395
- Issue date Jan 5, 1982
- Douglas O. Hauge
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Dicalcium phosphate manufacture
- Patent number 4,154,799
- Issue date May 15, 1979
- United States Gypsum Company
- Douglas O. Hauge
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing phosphoric acid using mixed acid feed and a d...
- Patent number 4,088,738
- Issue date May 9, 1978
- United States Gypsum Company
- Douglas O. Hauge
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphoric acid manufacture
- Patent number 4,029,743
- Issue date Jun 14, 1977
- Douglas O. Hauge
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphate process
- Patent number 4,012,491
- Issue date Mar 15, 1977
- United States Gypsum Company
- Douglas Oliver Hauge
- C01 - INORGANIC CHEMISTRY