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AMPEX

Overview
  • Total Patents
    4,454
About

AMPEX has a total of 4,454 patent applications. Its first patent ever was published in 1951. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets audio-visual technology, computer technology and machines are VICTOR COMPANY OF JAPAN, PIONEER VIDEO CORP and RECORDING IND ASSOCIATION AMERICA.

Patent filings per year

Chart showing AMPEXs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gooch Beverley R 77
#2 Lemoine Maurice G 56
#3 Ryan John O 54
#4 Ravizza Raymond F 45
#5 Pasdera Leonard A 44
#6 Rodal David R 24
#7 Wagner Steven D 24
#8 Trost Allen J 24
#9 O'Gwynn David C 23
#10 Louth Kenneth 22

Latest patents

Publication Filing date Title
WO2008115589A1 Vibration isolation
WO2006086703A1 System for handling bad storage locations in memory
WO0229540A2 System and method for transferring data between recording devices
US6724826B1 Method and apparatus for improving the image quality of transmitted video signals via pre-filtering
US6457928B1 Inter-row transfer unit for moving tape cartridges between rows of library systems
US6438623B1 Transfer unit extending between two or more cabinets for expansion of tape library systems
US6111718A Electronic record/play switch with low noise low input impedance preamplifier
US6023396A Magnetic head tip design to reduce dynamic spacing loss and improve signal quality in high-density helical scanning system
US6081401A Step gap head tracking servo
US6076142A User configurable raid system with multiple data bus segments and removable electrical bridges
JPH09288854A Method for lining up recording heads of helical scanning recorder by using reproducing head information
EP0780833A2 Improved magnetic recording system having a saturable layer and detection using MR element
US5721475A Extended-resolution pulse-width modulation servomotor drive
US6082653A System for estimating tape pack radius using a Kalman filter
US5757575A Track-curvature detection using clock phase shift in azimuth recording
US5843565A Particulate magnetic medium utilizing keeper technology and methods of manufacture
US5836533A Hybrid arm-position/tape-tension servocontrol system
JPH09245305A Recording head with erasing function having extended width
EP0768640A2 A small core magnetic head with non-magnetic side support
US5717552A Magnetic core with field confinement structure