GRUNBERG ROBERT MICHAEL has a total of 17 patent applications. Its first patent ever was published in 1983. It filed its patents most often in Australia, WIPO (World Intellectual Property Organization) and Germany. Its main competitors in its focus markets audio-visual technology and electrical machinery and energy are YUNGS GROUP INC, ESTRON AS and CHENG LIANG-CHIH.
# | Country | Total Patents | |
---|---|---|---|
#1 | Australia | 4 | |
#2 | WIPO (World Intellectual Property Organization) | 3 | |
#3 | Germany | 2 | |
#4 | EPO (European Patent Office) | 2 | |
#5 | United States | 2 | |
#6 | Switzerland | 1 | |
#7 | Denmark | 1 | |
#8 | United Kingdom | 1 | |
#9 | Netherlands | 1 |
# | Industry | |
---|---|---|
#1 | Audio-visual technology | |
#2 | Electrical machinery and energy |
# | Technology | |
---|---|---|
#1 | Loudspeakers and microphones | |
#2 | Electrically-conductive connections | |
#3 | Stereophonic systems |
# | Name | Total Patents |
---|---|---|
#1 | Grunberg Robert Michael | 14 |
#2 | Dixon Michael | 4 |
#3 | Grunberg Robert M | 2 |
Publication | Filing date | Title |
---|---|---|
WO02091797A1 | Coil driven diaphragm | |
EP1330936A1 | Direct coupling of waveguide to compression driver having matching slot shaped throats | |
WO9117636A1 | Improvements in or relating to loudspeakers | |
AU7851791A | Improvements in or relating to loudspeakers | |
AU4909290A | Improvements in or relating to loudspeakers | |
EP0340265A1 | Electro-acoustic transducers | |
AU5366986A | Low frequency audio transducer | |
DK149084D0 | Assembly for insertion in a fluid conducting piping system and comprising a hollow metal part and a plastic muff part | |
US4509185A | Time domain audio panner |