Envirotech Corporation

Organization

Menlo Park, CA, US

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Bioslurry reactor for treatment of slurries containing minerals, so...
- Patent number 5,227,136
- Issue date Jul 13, 1993
- Envirotech Corporation
- Douglas E. Hanify
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Apparatus for shifting filter plates in a filter press
- Patent number 5,106,499
- Issue date Apr 21, 1992
- Envirotech Corporation
- Steven S. Davis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Apparatus for shifting filter plates in a filter press
- Patent number 5,064,532
- Issue date Nov 12, 1991
- Envirotech Corporation
- Steven S. Davis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Bioslurry reactor for treatment of slurries containing minerals, so...
- Patent number 5,057,284
- Issue date Oct 15, 1991
- Envirotech
- Robert C. Emmett
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Apparatus for biological processing of metal-containing ores
- Patent number 5,007,620
- Issue date Apr 16, 1991
- Envirotech Corporation
- Robert C. Emmett
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Apparatus for shifting filter plates in a filter press
- Patent number 5,006,241
- Issue date Apr 9, 1991
- Envirotech Corporation
- Steven S. Davis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for biological processing of metal-containing...
- Patent number 4,974,816
- Issue date Dec 4, 1990
- Envirotech Corporation
- Robert C. Emmett
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Bioleaching apparatus and system
- Patent number 4,968,008
- Issue date Nov 6, 1990
- Envirotech Corporation
- Robert C. Emmett
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Flocculating agent combinations for mineral slime filtration systems
- Patent number 4,931,190
- Issue date Jun 5, 1990
- Envirotech Corporation
- Timothy J. Laros
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Apparatus for shifting filter plates in a filter press
- Patent number 4,806,239
- Issue date Feb 21, 1989
- Envirotech Corporation
- Steven S. Davis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Separator apparatus
- Patent number 4,737,288
- Issue date Apr 12, 1988
- Envirotech Corporation
- William Melis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for biological processing of metal-containing ores
- Patent number 4,732,608
- Issue date Mar 22, 1988
- Envirotech Corporation
- Robert C. Emmett
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Filter cloth cake removal device
- Patent number 4,710,293
- Issue date Dec 1, 1987
- Envirotech Corporation
- Steven S. Davis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Composite roll covering for expressing machines
- Patent number 4,697,511
- Issue date Oct 6, 1987
- Envirotech Corporation
- Steven S. Davis
- B30 - PRESSES
Information Patent Grant
Apparatus for granular media filter
- Patent number 4,624,783
- Issue date Nov 25, 1986
- Envirotech Corporation
- Brent C. Black
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Lifting mechanism for sedimentation device
- Patent number 4,624,787
- Issue date Nov 25, 1986
- Envirotech Corporation
- Ralph B. Haymore
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Multiple primary roll
- Patent number 4,561,978
- Issue date Dec 31, 1985
- Envirotech Corporation
- Kenneth F. Janecek
- B30 - PRESSES
Information Patent Grant
Flotation machine and aeration impeller
- Patent number 4,551,285
- Issue date Nov 5, 1985
- Envirotech Corporation
- Michael A. Jackson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for cleaning undeslimed coal
- Patent number 4,405,453
- Issue date Sep 20, 1983
- Envirotech Corporation
- Charles H. Wells
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Digester apparatus
- Patent number 4,378,437
- Issue date Mar 29, 1983
- Envirotech Corporation
- Lynn W. Cook
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Sedimentation apparatus having an improved skimming mechanism
- Patent number 4,364,834
- Issue date Dec 21, 1982
- Envirotech Corporation
- Walter G. Wawro
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Hydraulic filter plate shifter
- Patent number 4,364,827
- Issue date Dec 21, 1982
- Envirotech Corporation
- Murray M. Guttman
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Recovering copper from a copper-bearing source
- Patent number 4,359,376
- Issue date Nov 16, 1982
- Envirotech Corporation
- Frank A. Baczek
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Flashed-down residue treatment including filtering and solvent repu...
- Patent number 4,342,638
- Issue date Aug 3, 1982
- Envirotech Corporation
- Donald A. Dahlstrom
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Vacuum pan raising and lowering system
- Patent number 4,336,139
- Issue date Jun 22, 1982
- Envirotech Corporation
- Max A. Mueller
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Twin belt vacuum washer
- Patent number 4,324,116
- Issue date Apr 13, 1982
- Envirotech Corporation
- Steven S. Davis
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Mining vehicle
- Patent number D262973
- Issue date Feb 9, 1982
- Envirotech Corporation
- John Griffin
- D15 - Machines not elsewhere specified
Information Patent Grant
Geothermal brine treatment
- Patent number 4,304,666
- Issue date Dec 8, 1981
- Envirotech Corporation
- Robert H. Van Note
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Orbital wastewater treatment system with integral clarification
- Patent number 4,303,516
- Issue date Dec 1, 1981
- Envirotech Corporation
- H. David Stensel
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
System and process for total gaseous nonmethane organic analysis
- Patent number 4,302,422
- Issue date Nov 24, 1981
- Envirotech Corporation
- Yoshihiro Takahashi
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73809705 - BIOLIFT
- Serial number 73809705
- Registration number 1590741
- Filing date Jun 28, 1989
- Envirotech Corporation
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73457048
- Serial number 73457048
- Registration number 1356249
- Filing date Dec 14, 1983
- ENVIROTECH CORPORATION
- 7 - Machines and machine tools
Information Trademark
73373416 - SPARLING
- Serial number 73373416
- Filing date Jul 6, 1982
- Envirotech Corporation
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73349343 - HYDROCLEANER
- Serial number 73349343
- Registration number 1246862
- Filing date Feb 8, 1982
- Envirotech Corporation
- 7 - Machines and machine tools
Information Trademark
73346180 - QDS
- Serial number 73346180
- Filing date Jan 18, 1982
- Envirotech Corporation
- 7 - Machines and machine tools
Information Trademark
73280302 - WEMCO
- Serial number 73280302
- Registration number 1222378
- Filing date Jun 15, 1981
- Envirotech Corporation
- 7 - Machines and machine tools
Information Trademark
73312694 - SPARLING SPARLING
- Serial number 73312694
- Filing date Jun 1, 1981
- ENVIROTECH CORPORATION ENVIROTECHCORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73294077 - GOSLIN
- Serial number 73294077
- Registration number 1237064
- Filing date Jan 22, 1981
- Envirotech Corporation
- 7 - Machines and machine tools
Information Trademark
73283528 - MINERAL MASTER
- Serial number 73283528
- Filing date Oct 27, 1980
- Envirotech Corporation
- 7 - Machines and machine tools
Information Trademark
73240304 - HAWLEY
- Serial number 73240304
- Registration number 1199455
- Filing date Nov 23, 1979
- Envirotech Corporation
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73102251 - NOZZLE AIR
- Serial number 73102251
- Registration number 1101360
- Filing date Oct 6, 1976
- ENVIROTECH CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73082559 - A-S-H PUMP
- Serial number 73082559
- Registration number 1102950
- Filing date Apr 2, 1976
- ENVIROTECH CORPORATION
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73072022 - CIRCULAIRE
- Serial number 73072022
- Registration number 1113076
- Filing date Dec 16, 1975
- ENVIROTECH CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
72465900 - DOHRMANN
- Serial number 72465900
- Registration number 1018295
- Filing date Aug 17, 1973
- ENVIROTECH CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
72455586 - NORFELT
- Serial number 72455586
- Registration number 993920
- Filing date Apr 25, 1973
- ENVIROTECH CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
72453600
- Serial number 72453600
- Registration number 1003359
- Filing date Apr 5, 1973
- ENVIROTECH CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
72453599 - ENVIROTECH
- Serial number 72453599
- Registration number 1003358
- Filing date Apr 5, 1973
- ENVIROTECH CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
72453597 - ENVIROTECH
- Serial number 72453597
- Registration number 1032610
- Filing date Apr 5, 1973
- ENVIROTECH CORPORATION
- 7 - Machines and machine tools
Information Trademark
72453598
- Serial number 72453598
- Registration number 1032611
- Filing date Apr 5, 1973
- ENVIROTECH CORPORATION
- 7 - Machines and machine tools
Information Trademark
72292559 - EDGETRACK
- Serial number 72292559
- Registration number 878202
- Filing date Mar 6, 1968
- ENVIROTECH CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes

Envirotech Corporation

Organization

Patents Grantslast 30 patents

Bioslurry reactor for treatment of slurries containing minerals, so...

Apparatus for shifting filter plates in a filter press

Apparatus for shifting filter plates in a filter press

Bioslurry reactor for treatment of slurries containing minerals, so...

Apparatus for biological processing of metal-containing ores

Apparatus for shifting filter plates in a filter press

Method and apparatus for biological processing of metal-containing...

Bioleaching apparatus and system

Flocculating agent combinations for mineral slime filtration systems

Apparatus for shifting filter plates in a filter press

Separator apparatus

Method for biological processing of metal-containing ores

Filter cloth cake removal device

Composite roll covering for expressing machines

Apparatus for granular media filter

Lifting mechanism for sedimentation device

Multiple primary roll

Flotation machine and aeration impeller

Process for cleaning undeslimed coal

Digester apparatus

Sedimentation apparatus having an improved skimming mechanism

Hydraulic filter plate shifter

Recovering copper from a copper-bearing source

Flashed-down residue treatment including filtering and solvent repu...

Vacuum pan raising and lowering system

Twin belt vacuum washer

Mining vehicle

Geothermal brine treatment

Orbital wastewater treatment system with integral clarification

System and process for total gaseous nonmethane organic analysis

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

73809705 - BIOLIFT

73457048

73373416 - SPARLING

73349343 - HYDROCLEANER

73346180 - QDS

73280302 - WEMCO

73312694 - SPARLING SPARLING

73294077 - GOSLIN

73283528 - MINERAL MASTER

73240304 - HAWLEY

73102251 - NOZZLE AIR

73082559 - A-S-H PUMP

73072022 - CIRCULAIRE

72465900 - DOHRMANN

72455586 - NORFELT

72453600

72453599 - ENVIROTECH

72453597 - ENVIROTECH

72453598

72292559 - EDGETRACK