Learn more

DPHI ACQUISITIONS INC

Overview
  • Total Patents
    115
About

DPHI ACQUISITIONS INC has a total of 115 patent applications. Its first patent ever was published in 1999. It filed its patents most often in United States, Australia and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets audio-visual technology, computer technology and it methods for management are ADACHI YOSHIHISA, MULTIDISC TECH and ARIMA DEVICES CORP.

Patent filings in countries

World map showing DPHI ACQUISITIONS INCs patent filings in countries

Patent filings per year

Chart showing DPHI ACQUISITIONS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kadlec Ron J 49
#2 Watt Charles R 38
#3 Turner Christopher J 38
#4 Wach Hans B 16
#5 Blankenbeckler David L 14
#6 Lee Lane W 13
#7 Braitberg Michael F 12
#8 Davies David H 12
#9 Volk Steven B 8
#10 Freeman Robert D 7

Latest patents

Publication Filing date Title
US2009041244A1 Secure access system and method
WO2008148114A1 Trusted storage
WO2008106691A1 Dvd download
WO2007121034A2 Removable storage medium with biometric access
US2006280102A1 Optical disk drive with micro-SIL
KR20060041856A Small form-factor optical data storage device
US2005091491A1 Block-level storage device with content security
US6908725B2 Double-sided hybrid optical disk with surface topology
US7016294B2 Inner region identifier for optical disk
US7554898B2 Dual density disc with associated properties
US7914711B2 Use of mother stamper for optical disk molding
US6809995B2 Digital focus and tracking servo system
US6882603B2 Digital tracking servo system with tracking skate detection
US6906985B2 Calibration of tracking error signal gain in a tracking servo system
US2003043705A1 Detector input stray light offset calibration in an optical disk drive
US6882601B2 Digital servo system with feed-forward control loops
US2002136115A1 Calibration initiation methods for a tracking and focus servo system
US2002136106A1 Tracking servo system including a multi-track seek algorithm with a track zero crossing period integrity test
US2002136128A1 Digital tracking servo system with off-format detection
US6958957B2 Digital tracking and focus servo system with TES to FES crosstalk calibration