DRAVO CORP has a total of 877 patent applications. Its first patent ever was published in 1936. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets chemical engineering, basic materials chemistry and materials and metallurgy are GUANGZHOU XINGUANGHE ENVIRONMENTAL PROTECTION TECH CO LTD, HW PROCESS TECHNOLOGIES INC and BOLIDEN CONTECH AB.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 302 | |
#2 | Canada | 151 | |
#3 | United Kingdom | 76 | |
#4 | Germany | 61 | |
#5 | Australia | 51 | |
#6 | France | 49 | |
#7 | Japan | 40 | |
#8 | Brazil | 25 | |
#9 | Italy | 21 | |
#10 | South Africa | 21 | |
#11 | Spain | 15 | |
#12 | Netherlands | 15 | |
#13 | Belgium | 12 | |
#14 | Argentina | 10 | |
#15 | Sweden | 9 | |
#16 | Austria | 2 | |
#17 | EPO (European Patent Office) | 2 | |
#18 | Israel | 2 | |
#19 | Morocco | 2 | |
#20 | Philippines | 2 | |
#21 | Switzerland | 1 | |
#22 | Egypt | 1 | |
#23 | Finland | 1 | |
#24 | Greece | 1 | |
#25 | India | 1 | |
#26 | Republic of Korea | 1 | |
#27 | Norway | 1 | |
#28 | African Intellectual Property Organization | 1 | |
#29 | Zambia | 1 |
# | Industry | |
---|---|---|
#1 | Chemical engineering | |
#2 | Basic materials chemistry | |
#3 | Materials and metallurgy | |
#4 | Environmental technology | |
#5 | Packaging and shipping | |
#6 | Thermal processes | |
#7 | Foods and drinks |
# | Technology | |
---|---|---|
#1 | Separation | |
#2 | Metal production and refining | |
#3 | Transport or storage devices | |
#4 | Refining | |
#5 | Furnaces | |
#6 | Chemical or physical processes | |
#7 | Water treatment | |
#8 | Food proteins | |
#9 | Climate change mitigation in goods production | |
#10 | Fuels |
# | Name | Total Patents |
---|---|---|
#1 | Karnofsky George B | 26 |
#2 | Briggs Aubrey C | 22 |
#3 | Briggs Aubrey Charles | 21 |
#4 | Selmeczi Joseph G | 17 |
#5 | Jaquay Louis H | 17 |
#6 | Reilly Bertram B | 15 |
#7 | Anthes John A | 15 |
#8 | Binzen Willard | 15 |
#9 | Vlnaty Joseph | 13 |
#10 | Cappel Fred | 12 |
Publication | Filing date | Title |
---|---|---|
GB8814520D0 | Improvements in/relating to belt conveyor | |
US4760968A | Integrated dust containment system for rotary crusher/breakers and the like | |
US4779992A | Lime slaker | |
US4699187A | Dust control in hoppers | |
US4714097A | Dust containment system for bulk cargo containers | |
GB8606047D0 | Improvements in or relating to a belt conveyor | |
US4626418A | Removal of SO2 from SO2 -containing gases | |
US4683029A | Circular solvent extractor | |
US4603225A | Process for separating dimethyl ether from a hydrocarbon mixture containing the same | |
US4655401A | Rotary car dumper with lump breaker apparatus | |
US4572484A | Pallet construction for traveling grate machines | |
US4575055A | Circular traveling grate machine | |
AU4083885A | Travelling grate retorting of oil shale | |
US4563195A | Method for treatment of tar-bearing fuel gas | |
US4609321A | Rotary car dumper with dust collection system | |
GB8427078D0 | Improvements in or relating to a pressure resistant enclosure | |
JPS6019023A | Removal of sulfur dioxide from gas stream | |
CA1211286A | Fixed bed gasifier with gas cleaning means and method for producing combustible gases | |
KR890005279B1 | Accelerating slugs of liguid | |
GB8401454D0 | For solvent deasphalting of petroleum |