C & H WERKZEUGMASCHINEN GMBH has a total of 11 patent applications. Its first patent ever was published in 1991. It filed its patents most often in Germany, EPO (European Patent Office) and China. Its main competitors in its focus markets chemical engineering, basic materials chemistry and environmental technology are LEOPOLD CO INC F B, PWT PROJECTS LTD and JOSEPH ALLEN PICKARD.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 6 | |
#2 | EPO (European Patent Office) | 2 | |
#3 | China | 1 | |
#4 | United States | 1 | |
#5 | WIPO (World Intellectual Property Organization) | 1 |
# | Industry | |
---|---|---|
#1 | Chemical engineering | |
#2 | Basic materials chemistry | |
#3 | Environmental technology | |
#4 | Machine tools | |
#5 | Machines | |
#6 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Separation | |
#2 | Lubricating compositions | |
#3 | Water treatment | |
#4 | Cleaning | |
#5 | Flotation | |
#6 | Unspecified technologies | |
#7 | Grinding or polishing devices | |
#8 | Lubricating | |
#9 | Accessories for machine tools |
# | Name | Total Patents |
---|---|---|
#1 | Combrowski Zbigniew | 10 |
#2 | Hamma Armin | 4 |
#3 | Hammer Armin | 1 |
#4 | Combrowski Z | 1 |
#5 | Hamma A | 1 |
#6 | Waizenegger Klaus | 1 |
Publication | Filing date | Title |
---|---|---|
CN1372486A | Device for maintaining and cleaning a working medium | |
DE19937701A1 | Device for maintaining and cleaning a working medium | |
DE19724172A1 | Purification of engineering oils, removing submicron particles in transverse flow filtration | |
DE19718217A1 | Purification of work medium especially from cooling lubricant systems, emulsions or solutions | |
DE19718215A1 | Purification of work medium, especially from cooling lubricant systems, emulsions or solutions | |
DE4319644A1 | Disposal unit | |
DE4243865A1 | Equipment for grinding flutes and end face of twist drills etc. | |
US5223128A | Apparatus for cleaning a bath of liquid with conveyor belt and adjustable stripper |