SIEFKEN GEORGE R

Overview

Total Patents

11

About

SIEFKEN GEORGE R has a total of 11 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United States and Canada. Its main competitors in its focus markets thermal processes, machines and civil engineering are GEILINGER AG, GEMLA PLAST AB and AMERICAN WARMING VENTILATION.

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Patent filings in countries

World map showing SIEFKEN GEORGE Rs patent filings in countries

#	Country	Total Patents
#1	United States	10
#2	Canada	1

Patent filings per year

Chart showing SIEFKEN GEORGE Rs patent filings per year from 1900 to 2020

Similar Companies

GEILINGER AG 86% similarity

GEMLA PLAST AB 83% similarity

AMERICAN WARMING VENTILATION 82% similarity

SKERRITT ROY P 81% similarity

FEDDERS QUIGAN CORP 81% similarity

TORUNETSUKUSU KK 81% similarity

BUENSOD STACEY INC 80% similarity

PHILIPS IND INC 80% similarity

BAILEY JAMES H 80% similarity

ROSENOW EDWARD C 79% similarity

Focus industries

#	Industry
#1	Thermal processes
#2	Machines
#3	Civil engineering
#4	Materials and metallurgy
#5	Environmental technology

Focus technologies

#	Technology
#1	Doors and windows
#2	Domestic heating systems
#3	Unspecified technologies
#4	Air-conditioning
#5	Reduction of greenhouse gas emissions
#6	Non-metallic elements
#7	Unspecified technologies

Top inventors

#	Name	Total Patents
#1	Siefken George R	11
#2	Baskerville Charles	1

Latest patents

Publication	Filing date	Title
US2377527A	1943-04-05	Humidifying apparatus
US2323158A	1941-01-24	Humidifier
US2283391A	1940-04-11	Cooling and dehumidifying apparatus
US2200045A	1939-04-17	Ventilator
US2019874A	1934-01-17	Humidifying apparatus
US1678654A	1926-06-03	Ventilating device
US1575012A	1924-02-11	Metal weather strip
US1245393A	1915-03-12	Weather-strip for windows.
CA150423A	1913-05-12	Ventilator
US1026471A	1910-06-13	Ventilator.
US721972A	1902-05-17	Gas-regulating system.