DRAVO CORPORATION

Organization

PITTSBURGH, PA, US

MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS)
Business Address
11 STANWIX ST. 11TH FLOOR PITTSBURGH PA 15222 412-995-55
Mailing Address
11 STANWIX ST., 11TH FLOOR PITTSBURGH PA 15222
State Location
PA
State of Incorporation
PA

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Lime slaker
- Patent number 4,779,992
- Issue date Oct 25, 1988
- Dravo Corporation
- David T. Underwood
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Integrated dust containment system for rotary crusher/breakers and...
- Patent number 4,760,968
- Issue date Aug 2, 1988
- Dravo Corporation
- Willard Binzen
- B08 - CLEANING
Information Patent Grant
Dust containment system for bulk cargo containers
- Patent number 4,714,097
- Issue date Dec 22, 1987
- Dravo Corporation
- Willard Binzen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Dust control in hoppers
- Patent number 4,699,187
- Issue date Oct 13, 1987
- Dravo Corporation
- Willard Binzen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Process of thermally treating lump or agglomerated materials on a t...
- Patent number 4,689,007
- Issue date Aug 25, 1987
- Dravo Corporation
- Alois Kilian
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Circular solvent extractor
- Patent number 4,683,029
- Issue date Jul 28, 1987
- Dravo Corporation
- John F. Oyler
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Rotary car dumper with lump breaker apparatus
- Patent number 4,655,401
- Issue date Apr 7, 1987
- Dravo Corporation
- Willard Binzen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Removal of SO.sub.2 from SO.sub.2 -containing gases
- Patent number 4,626,418
- Issue date Dec 2, 1986
- Dravo Corporation
- John W. College
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Rotary car dumper with dust collection system
- Patent number 4,609,321
- Issue date Sep 2, 1986
- Dravo Corporation
- Willard Binzen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Process for separating dimethyl ether from a hydrocarbon mixture co...
- Patent number 4,603,225
- Issue date Jul 29, 1986
- Dravo Corporation
- James Colaianne
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Circular traveling grate machine
- Patent number 4,575,055
- Issue date Mar 11, 1986
- Dravo Corporation
- Stanley M. Coulter
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Accelerating slugs of liquid
- Patent number 4,573,637
- Issue date Mar 4, 1986
- Dravo Corporation
- Larry L. Pater
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Pallet construction for traveling grate machines
- Patent number 4,572,484
- Issue date Feb 25, 1986
- Dravo Corporation
- Stanley M. Coulter
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Method for treatment of tar-bearing fuel gas
- Patent number 4,563,195
- Issue date Jan 7, 1986
- Dravo Corporation
- Leonard L. Frauen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process and apparatus for separating fines from micella streams
- Patent number 4,563,273
- Issue date Jan 7, 1986
- Dravo Corporation
- Donald A. Gessler
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Tethered vehicle for moving bulk material
- Patent number 4,548,315
- Issue date Oct 22, 1985
- Dravo Corporation
- Aubrey C. Briggs
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Train holding apparatus with means for relieving the load imposed t...
- Patent number 4,512,260
- Issue date Apr 23, 1985
- Dravo Corporation
- Edward T. Manning
- B61 - RAILWAYS
Information Patent Grant
Self training belt conveyor with digging elements
- Patent number 4,506,781
- Issue date Mar 26, 1985
- Dravo Corporation
- Aubrey C. Briggs
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Apparatus for removing the liquid phase from a slurry of fine granu...
- Patent number 4,501,539
- Issue date Feb 26, 1985
- Dravo Corporation
- Edward A. Fenton
- B30 - PRESSES
Information Patent Grant
Process for recovering heat from the combustion of residual carbon...
- Patent number 4,490,237
- Issue date Dec 25, 1984
- Dravo Corporation
- Louis H. Jaquay
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method for random car train positioning
- Patent number 4,487,547
- Issue date Dec 11, 1984
- Dravo Corporation
- James E. Cornish
- B61 - RAILWAYS
Information Patent Grant
Pokehole system for fixed bed gasifier and pokehole unit
- Patent number 4,479,808
- Issue date Oct 30, 1984
- Dravo Corporation
- Hugh L. Campbell
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Rotary car dumper installation with integral dust collection
- Patent number 4,479,749
- Issue date Oct 30, 1984
- Dravo Corporation
- Willard Binzen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method of and apparatus for the mixing and processing of fragile ma...
- Patent number 4,475,987
- Issue date Oct 9, 1984
- Dravo Corporation
- Frank Forbes
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for solvent extraction of bitumen from oil sand
- Patent number 4,448,667
- Issue date May 15, 1984
- Dravo Corporation
- George B. Karnofsky
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Apparatus for clamping a railroad car in a rotary car dumper
- Patent number 4,444,539
- Issue date Apr 24, 1984
- Dravo Corporation
- Cornel Muhoray
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Heating process gas for indirect shale oil retorting through the co...
- Patent number 4,439,307
- Issue date Mar 27, 1984
- Dravo Corporation
- Louis H. Jaquay
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for heating recycle gas in oil shale retorting
- Patent number 4,436,611
- Issue date Mar 13, 1984
- Dravo Corporation
- Louis H. Jaquay
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method of and apparatus for processing of oil shale
- Patent number 4,425,220
- Issue date Jan 10, 1984
- Dravo Corporation
- Daniel W. Kestner
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Apparatus for the continuous solvent extraction of bitumen from oil...
- Patent number 4,422,901
- Issue date Dec 27, 1983
- Dravo Corporation
- George B. Karnofsky
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

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Trademarklast 30 trademarks

Information Trademark
73650516 - DRAVO VAN HOUTEN
- Serial number 73650516
- Registration number 1474578
- Filing date Mar 20, 1987
- Dravo Corporation
- 42 - Scientific and technological services and research and design relating thereto
Information Trademark
73632649 - DRAVOPLAN
- Serial number 73632649
- Registration number 1522161
- Filing date Nov 28, 1986
- DRAVO AUTOMATION SCIENCES
- 42 - Scientific and technological services and research and design relating thereto
Information Trademark
73632646 - DRAVOCORE
- Serial number 73632646
- Registration number 1488217
- Filing date Nov 28, 1986
- DRAVO AUTOMATION SCIENCES
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73235108 - TRU-WELD
- Serial number 73235108
- Registration number 1156978
- Filing date Oct 15, 1979
- Dravo Corporation
- 6 - Common metals and their alloys
Information Trademark
73128469 - DRAVO
- Serial number 73128469
- Registration number 1101739
- Filing date May 31, 1977
- DRAVO CORPORATION
- 37 - Building construction
Information Trademark
73128771 - DRAVO
- Serial number 73128771
- Registration number 1098802
- Filing date May 31, 1977
- DRAVO CORPORATION
- 19 - Building materials (non-metallic)
Information Trademark
73128756 - DRAVO
- Serial number 73128756
- Registration number 1080811
- Filing date May 31, 1977
- DRAVO CORPORATION
- 7 - Machines and machine tools
Information Trademark
73128767 - DRAVO
- Serial number 73128767
- Registration number 1095867
- Filing date May 31, 1977
- DRAVO CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73128772 - DRAVO
- Serial number 73128772
- Registration number 1080785
- Filing date May 31, 1977
- DRAVO CORPORATION
- 6 - Common metals and their alloys
Information Trademark
73128679 - DRAVO
- Serial number 73128679
- Registration number 1096283
- Filing date May 31, 1977
- DRAVO CORPORATION
- 39 - Transport
Information Trademark
73128769 - DRAVO
- Serial number 73128769
- Registration number 1095898
- Filing date May 31, 1977
- DRAVO CORPORATION
- 12 - Vehicles
Information Trademark
73120380 - LECTROCLEAR
- Serial number 73120380
- Registration number 1115587
- Filing date Mar 25, 1977
- Swift & Company
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73020676 - THIOSORBIC
- Serial number 73020676
- Registration number 1007893
- Filing date May 6, 1974
- DRAVO CORPORATION
- 19 - Building materials (non-metallic)
Information Trademark
73012270 - DENITE
- Serial number 73012270
- Registration number 1009140
- Filing date Jan 31, 1974
- DRAVO CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73012265 - CALCILOX
- Serial number 73012265
- Registration number 999460
- Filing date Jan 31, 1974
- DRAVO CORPORATION
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
72337283 - MOBILPACK
- Serial number 72337283
- Registration number 923477
- Filing date Sep 8, 1969
- DRAVO CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
72337282 - AEROPACK
- Serial number 72337282
- Registration number 923765
- Filing date Sep 8, 1969
- DRAVO CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes

DRAVO CORPORATION

Organization

Business Address

Mailing Address

State Location

State of Incorporation

Patents Grantslast 30 patents

Lime slaker

Integrated dust containment system for rotary crusher/breakers and...

Dust containment system for bulk cargo containers

Dust control in hoppers

Process of thermally treating lump or agglomerated materials on a t...

Circular solvent extractor

Rotary car dumper with lump breaker apparatus

Removal of SO.sub.2 from SO.sub.2 -containing gases

Rotary car dumper with dust collection system

Process for separating dimethyl ether from a hydrocarbon mixture co...

Circular traveling grate machine

Accelerating slugs of liquid

Pallet construction for traveling grate machines

Method for treatment of tar-bearing fuel gas

Process and apparatus for separating fines from micella streams

Tethered vehicle for moving bulk material

Train holding apparatus with means for relieving the load imposed t...

Self training belt conveyor with digging elements

Apparatus for removing the liquid phase from a slurry of fine granu...

Process for recovering heat from the combustion of residual carbon...

Method for random car train positioning

Pokehole system for fixed bed gasifier and pokehole unit

Rotary car dumper installation with integral dust collection

Method of and apparatus for the mixing and processing of fragile ma...

Process for solvent extraction of bitumen from oil sand

Apparatus for clamping a railroad car in a rotary car dumper

Heating process gas for indirect shale oil retorting through the co...

Process for heating recycle gas in oil shale retorting

Method of and apparatus for processing of oil shale

Apparatus for the continuous solvent extraction of bitumen from oil...

Trademarklast 30 trademarks

73650516 - DRAVO VAN HOUTEN

73632649 - DRAVOPLAN

73632646 - DRAVOCORE

73235108 - TRU-WELD

73128469 - DRAVO

73128771 - DRAVO

73128756 - DRAVO

73128767 - DRAVO

73128772 - DRAVO

73128679 - DRAVO

73128769 - DRAVO

73120380 - LECTROCLEAR

73020676 - THIOSORBIC

73012270 - DENITE

73012265 - CALCILOX

72337283 - MOBILPACK

72337282 - AEROPACK