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DONALD R MIDDLETON

Overview
  • Total Patents
    16
About

DONALD R MIDDLETON has a total of 16 patent applications. Its first patent ever was published in 1945. It filed its patents most often in United States. Its main competitors in its focus markets control and electrical machinery and energy are AUTOTRONICS ENG INT LTD, SILICON MOTION SHENZHEN INC and SANKO ELECTRONIC LAB.

Patent filings in countries

World map showing DONALD R MIDDLETONs patent filings in countries
# Country Total Patents
#1 United States 16

Patent filings per year

Chart showing DONALD R MIDDLETONs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Control
#2 Electrical machinery and energy

Top inventors

# Name Total Patents
#1 Bixby William H 14
#2 Herbert Bixby William 1
#3 Pogorzelski Roman J 1

Latest patents

Publication Filing date Title
US2774930A Regulated rectifying apparatus
US2709778A Current supply apparatus
US2713140A Regulated rectifying apparatus
US2709779A Voltage regulating system
US2630557A Regulated rectifying apparatus
US2645765A Abnormal voltage indicating device
US2604618A Regulated rectifying apparatus
US2572690A Rectifying apparatus
US2688721A Voltage regulation
US2511219A Voltage regulator
US2486250A Voltage regulator
US2409610A Voltage regulation
US2413941A Voltage regulation
US2435572A Voltage regulation
US2466874A Voltage regulation
US2435573A Voltage regulation