DAVID SYSTEMS INC has a total of 52 patent applications. Its first patent ever was published in 1984. It filed its patents most often in Spain, Australia and Israel. Its main competitors in its focus markets telecommunications, digital networks and electrical machinery and energy are FUJITSU I NETWORK SYSTEMS LTD, VERIZON SERVICES CORP and PALTALK HOLDINGS INC.
# | Country | Total Patents | |
---|---|---|---|
#1 | Spain | 7 | |
#2 | Australia | 6 | |
#3 | Israel | 6 | |
#4 | United States | 6 | |
#5 | EPO (European Patent Office) | 5 | |
#6 | Japan | 4 | |
#7 | WIPO (World Intellectual Property Organization) | 4 | |
#8 | South Africa | 4 | |
#9 | Brazil | 3 | |
#10 | Canada | 3 | |
#11 | China | 2 | |
#12 | Republic of Korea | 2 |
# | Industry | |
---|---|---|
#1 | Telecommunications | |
#2 | Digital networks | |
#3 | Electrical machinery and energy | |
#4 | Audio-visual technology | |
#5 | Basic communication technologies |
# | Name | Total Patents |
---|---|---|
#1 | Wood Samuel F | 21 |
#2 | Cafiero Luca | 8 |
#3 | Mazzola Mario | 8 |
#4 | Prati Massimo | 7 |
#5 | Wakerly John F | 6 |
#6 | Samiyueru Efu Utsudo | 3 |
#7 | Aasaa Ai Roorusen | 1 |
#8 | Wakerly Francis J F | 1 |
#9 | Cafiero | 1 |
#10 | Wood Frederick S | 1 |
Publication | Filing date | Title |
---|---|---|
US4975903A | Digital timeslot and signaling bus in a digital PBX switch | |
IL89792D0 | High-speed digital loop transceiver | |
EP0299639A2 | Digital data communications system | |
CN1010647B | High-speed digital loop transceiver | |
CN1008594B | Digit time slot of using in the digital branch exchange and signal bus | |
IL89792A | High-speed digital loop transceiver | |
EP0182798A1 | Digital timeslot and signaling bus in a digital pbx switch. | |
US4689816A | Three relay C. O. trunk interface | |
US4680779A | Distributed clock synchronization in a digital data switching system | |
US4579406A | Printed circuit board connector system | |
US4731827A | Interswitch line circuit | |
US4584690A | Alternate Mark Invert (AMI) transceiver with switchable detection and digital precompensation |