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PLUS DEV CORP

Overview
  • Total Patents
    15
About

PLUS DEV CORP has a total of 15 patent applications. Its first patent ever was published in 1985. It filed its patents most often in United States, EPO (European Patent Office) and Japan. Its main competitors in its focus markets audio-visual technology, computer technology and machines are CIPHER DATA PROD, BASE TECHNOLOGY INC and LIEBMAN ANDREW.

Patent filings in countries

World map showing PLUS DEV CORPs patent filings in countries
# Country Total Patents
#1 United States 12
#2 EPO (European Patent Office) 1
#3 Japan 1
#4 Republic of Korea 1

Patent filings per year

Chart showing PLUS DEV CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Graham Randolph H 7
#2 Moon William G 7
#3 Harrison Joel N 5
#4 Stone Thomas R 4
#5 Westwood Donald C 3
#6 Camp Claude E 2
#7 Hassel Michael J 2
#8 Felix Ian C 2
#9 Blackborow Richard J 2
#10 Peterson Bruce R 2

Latest patents

Publication Filing date Title
US4882671A Microprocessor controlled rigid disk file subsystem
US4860194A A method for using a modular unitary disk file subsystem
US4858034A Modular unitary disk file subsystem with differing density zones
US4914530A Media defect management within disk drive sector format
US4772974A Compact head and disk assembly
US4825321A Modular unitary disk file subsystem having increased data storage capacity
US4819153A Microprocessor controlled rigid disk file subsystem
US4712146A Thin and compact micro-Winchester head and disk assembly
US4703176A Compact polyphase optical position encoder
US4639863A Modular unitary disk file subsystem
US4661696A Optical encoder which use a rectangular photodetector array
US4647997A Aerodynamic latch for disk file actuator