Learn more

WIRELESS SPECIALTY APPARATUS

Overview
  • Total Patents
    71
About

WIRELESS SPECIALTY APPARATUS has a total of 71 patent applications. Its first patent ever was published in 1919. It filed its patents most often in United States, Germany and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and telecommunications are ASEA JUMET SA, DUBILIER CONDENSER & RADIO COR and KLASCHKA RUDOLF.

Patent filings in countries

World map showing WIRELESS SPECIALTY APPARATUSs patent filings in countries
# Country Total Patents
#1 United States 66
#2 Germany 2
#3 Canada 1
#4 France 1
#5 United Kingdom 1

Patent filings per year

Chart showing WIRELESS SPECIALTY APPARATUSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Whittier Pickard Greenleaf 21
#2 Priess William H 19
#3 Bailey William M 11
#4 Proctor John A 8
#5 Albert Proctor John 3
#6 Byron Macpherson 2
#7 Butler Benjamin J 2
#8 Hoyt Reginald H 1
#9 Stuart Webster William 1
#10 Dane Francis W 1

Latest patents

Publication Filing date Title
DE538666C Electric capacitor with slotted active metal coatings, especially for high frequency
DE576861C Antenna for direction finding and signal pick-up, in particular on and from aircraft
US1801413A Rack for insulating casing condensers
US1807135A Coupling transformer
US1725123A Electrical condenser
US1805075A Electrical condenser
US1715035A Apparatus for manufacturing electrical condensers
US1795504A Condenser and process
US1805651A Condenser manufacture
US1684491A Electrostatic condenser
US1775266A Apparatus unit
US1738314A Electrical condenser
US1824529A Electrical condenser
US1824587A Electrical condenser
US1824530A Electrical condenser
US1697477A Electrical condenser
US1779145A Radio loop aerial
US1812713A Electrical condenser
US1536453A Vernier for tuning reactances
US1805154A Vernier