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BUTLER JOHN L

Overview
  • Total Patents
    11
  • GoodIP Patent Rank
    216,596
  • Filing trend
    ⇩ 100.0%
About

BUTLER JOHN L has a total of 11 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1932. It filed its patents most often in United States and Canada. Its main competitors in its focus markets audio-visual technology, machines and measurement are DYNAMICS CORP MASSA DIV, IMAGE ACOUSTICS INC and POMPEI FRANK JOSEPH.

Patent filings in countries

World map showing BUTLER JOHN Ls patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 2

Patent filings per year

Chart showing BUTLER JOHN Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Butler John L 11
#2 Butler Alexander L 4
#3 Clemens Richard A 1
#4 Clark Arthur 1

Latest patents

Publication Filing date Title
US10744532B1 End driven bender transduction apparatus
US2014369160A1 Active cloaking with wideband transducers
US8659211B1 Quad and dual cantilever transduction apparatus
US8599648B1 Doubly steered acoustic array
US8836792B1 Active cloaking with transducers
US8072843B1 Stepped multiply resonant wideband transducer apparatus
US4443731A Hybrid piezoelectric and magnetostrictive acoustic wave transducer
US3049934A Electrically assisted manual gear shift means
US1933159A Game
CA915930A Boil-in extension for kettles and lids
CA877493A Roller skate wheel assembly