Robert D. Hansen

Person

Midland, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Depression of the flotation of silica or siliceous gangue in minera...
- Patent number 5,057,209
- Issue date Oct 15, 1991
- The Dow Chemical Company
- Richard R. Klimpel
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Pyrite depressants useful in the separation of pyrite from coal
- Patent number 4,830,740
- Issue date May 16, 1989
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Pyrite depressants useful in the separation of pyrite from coal
- Patent number 4,826,588
- Issue date May 2, 1989
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Collector compositions for the froth flotation of mineral values
- Patent number 4,822,483
- Issue date Apr 18, 1989
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Method for the froth flotation of coal
- Patent number 4,820,406
- Issue date Apr 11, 1989
- The Dow Chemical Company
- Robert D. Hansen
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Flotation depressants
- Patent number 4,808,301
- Issue date Feb 28, 1989
- The Dow Chemical Company
- Robert D. Hansen
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Froth flotation method
- Patent number 4,797,202
- Issue date Jan 10, 1989
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Froth flotation method
- Patent number 4,789,392
- Issue date Dec 6, 1988
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Frothers demonstrating enhanced recovery of coarse particles in fro...
- Patent number RE32778
- Issue date Nov 8, 1988
- The Dow Chemical Company
- Robert D. Hansen
- 209 - Classifying, separating, and assorting solids
Information Patent Grant
Method for the froth flotation of coal
- Patent number 4,770,767
- Issue date Sep 13, 1988
- The Dow Chemical Company
- Robert D. Hansen
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Frothers demonstrating enhanced recovery of fine particles of coal...
- Patent number 4,761,223
- Issue date Aug 2, 1988
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Novel collectors for the selective froth flotation of mineral sulfides
- Patent number 4,735,711
- Issue date Apr 5, 1988
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Novel collectors for the selective froth flotation of mineral sulfides
- Patent number 4,732,668
- Issue date Mar 22, 1988
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Novel collector composition for froth flotation
- Patent number 4,702,822
- Issue date Oct 27, 1987
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Collector compositions for the froth flotation of mineral values
- Patent number 4,684,459
- Issue date Aug 4, 1987
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Collector compositions for the froth flotation of mineral values
- Patent number 4,676,890
- Issue date Jun 30, 1987
- The Dow Chemical Company
- Richard R. Klimpel
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Frothers demonstrating enhanced recovery of coarse particles in fro...
- Patent number 4,582,596
- Issue date Apr 15, 1986
- The Dow Chemical Company
- Robert D. Hansen
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Conditioner for flotation of coal
- Patent number 4,474,619
- Issue date Oct 2, 1984
- The Dow Chemical Company
- Wilfred C. Meyer
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Aluminum container for processing vinylbenzyl chlorides
- Patent number 4,213,831
- Issue date Jul 22, 1980
- The Dow Chemical Company
- Richard H. Hall
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Latex coatings for electrographic sheets
- Patent number 4,061,833
- Issue date Dec 6, 1977
- The Dow Chemical Company
- Ronald R. Pelletier
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Robert D. Hansen

Person

Patents Grantslast 30 patents

Depression of the flotation of silica or siliceous gangue in minera...

Pyrite depressants useful in the separation of pyrite from coal

Pyrite depressants useful in the separation of pyrite from coal

Collector compositions for the froth flotation of mineral values

Method for the froth flotation of coal

Flotation depressants

Froth flotation method

Froth flotation method

Frothers demonstrating enhanced recovery of coarse particles in fro...

Method for the froth flotation of coal

Frothers demonstrating enhanced recovery of fine particles of coal...

Novel collectors for the selective froth flotation of mineral sulfides

Novel collectors for the selective froth flotation of mineral sulfides

Novel collector composition for froth flotation

Collector compositions for the froth flotation of mineral values

Collector compositions for the froth flotation of mineral values

Frothers demonstrating enhanced recovery of coarse particles in fro...

Conditioner for flotation of coal

Aluminum container for processing vinylbenzyl chlorides

Latex coatings for electrographic sheets