Learn more

DAVID SYSTEMS INC

Overview
  • Total Patents
    52
About

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.

Patent filings per year

Chart showing DAVID SYSTEMS INCs patent filings per year from 1900 to 2020

Top inventors

# 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

Latest patents

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