Learn more

D & M HOLDINGS INC

Overview
  • Total Patents
    618
  • GoodIP Patent Rank
    13,354
  • Filing trend
    ⇩ 58.0%
About

D & M HOLDINGS INC has a total of 618 patent applications. It decreased the IP activity by 58.0%. Its first patent ever was published in 1997. It filed its patents most often in Japan, EPO (European Patent Office) and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets audio-visual technology, computer technology and digital networks are KLOTZ DIGITAL AG, INTERVAL RESEARCH CORP and DEUTSCHE POST RUNDFUNK.

Patent filings per year

Chart showing D & M HOLDINGS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Onizuka Kazuhiro 29
#2 Murrells Nicholas 21
#3 Endo Yasuhiro 18
#4 Stead Brendon 18
#5 Fukushima Hiroshi 17
#6 Wachter Martin Richard 17
#7 Takasu Yasuo 15
#8 Urazoe Mitsuhiro 14
#9 Yoshida Yukihiro 12
#10 Fukushima Yoshinari 11

Latest patents

Publication Filing date Title
WO2021014691A1 Wireless audio system, wireless speaker, and group joining method for wireless speaker
WO2020118026A1 Virtual media service
JP2020184705A Audio device, audio system, and computer-readable program
JP2020184704A Operation terminal, audio device, audio system, and computer-readable program
US2021049215A1 Shared Context Manager for Cohabitating Agents
WO2019152300A1 System and method for synchronizing networked rendering devices
JP2020120332A Earphone device
EP3682602A1 A method and system for providing limited controller access to a mesh network of media rendering devices
JP2019212993A Acoustic profile information generation device, controller, multi-channel audio device, and computer-readable program
WO2018175892A1 System providing expressive and emotive text-to-speech
US2019238534A1 Voice authentication and setup for wireless media rendering system
JP2019036103A Audio device and program readable by computer
US2019380021A1 System and method for device control based upon home or away detection of a mobile device
US2019191248A1 Soundbar having single interchangeable mounting surface and multi-directional audio output
JP2017174435A Selectively coordinated audio player system
JP2018173740A Audio system, audio player, remote controller, and computer readable program
JP2018165787A Audio device and computer readable program
EP3522551A1 Audio/video device
JP2018120319A Audio system, audio player, remote controller, and computer readable program
JP2018087881A Wireless audio system, controller, wireless audio player, and computer readable program