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RATIONAL

Overview
  • Total Patents
    21
About

RATIONAL has a total of 21 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United Kingdom, United States and Australia. Its main competitors in its focus markets computer technology, machines and transport are HSU WINDSOR W, ANALOG DESIGN AUTOMATION INC and HOUGHTON MIFFLIN CO.

Patent filings per year

Chart showing RATIONALs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Devlin Michael T 7
#2 Stevenson David R 7
#3 Druke Michael B 6
#4 Bernstein David H 5
#5 Wallach Walter A 4
#6 Wilson James A Jr 2
#7 Paluch Edward J 2
#8 Wilson Jr James A 2
#9 Schroder Steven W 2
#10 Schroder Steven William 1

Latest patents

Publication Filing date Title
HK35889A Higher order language-directed computer
US4791550A Higher order language-directed computer
US4766536A Computer bus apparatus with distributed arbitration
US4736287A Set association memory system
CA1270336A Higher order language-directed computer
EP0215001A1 Higher order language-directed computer.
GB8512034D0 Distributed microcode address apparatus for computer
WO8504967A1 Computer bus apparatus with distributed arbitration
DE3436352A1 Memory system for digital computers
GB8424307D0 Memory system
CA1216370A Set association memory system