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PETTIGREW ARCHIBALD M

Overview
  • Total Patents
    11
About

PETTIGREW ARCHIBALD M has a total of 11 patent applications. Its first patent ever was published in 1982. It filed its patents most often in United Kingdom and United States. Its main competitors in its focus markets audio-visual technology are JINGHUA ZHU, SUH SANG WOON and VILN K B MAGNITNOJ ZAPISI.

Patent filings in countries

World map showing PETTIGREW ARCHIBALD Ms patent filings in countries
# Country Total Patents
#1 United Kingdom 10
#2 United States 1

Patent filings per year

Chart showing PETTIGREW ARCHIBALD Ms patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Audio-visual technology

Focus technologies

# Technology
#1 Special information storage

Top inventors

# Name Total Patents
#1 Pettigrew Archibald M 1

Latest patents

Publication Filing date Title
GB0804252D0 FM delay quadrature detector
GB0707137D0 FM multipath demodulator
GB0706842D0 FM Multipath demodulator
GB0706841D0 Fm multipath test transmitter
GB0511825D0 Multi-path frequency modulated transmitter
GB0506471D0 Demodulation of frequency modulated signals in the presence of multipath conditions
GB0312919D0 Quadrature digital frequency modulation
GB9804354D0 Improvements in FM demodulation circuits
GB9725573D0 Improvements in magnetic recording using contour biasing
GB8908975D0 Improvements in magnetic recording
US4499508A Digital magnetic recording