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HELEN E BRENNAN

Overview
  • Total Patents
    21
About

HELEN E BRENNAN has a total of 21 patent applications. Its first patent ever was published in 1956. It filed its patents most often in Canada and United States. Its main competitors in its focus markets materials and metallurgy are ENGEL WERNER, STOKES FRANCIS WILLIAM and SP K B PROEKT MASHIN DLYA TOCH.

Patent filings in countries

World map showing HELEN E BRENNANs patent filings in countries
# Country Total Patents
#1 Canada 20
#2 United States 1

Patent filings per year

Chart showing HELEN E BRENNANs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

# Technology
#1 Casting metal

Top inventors

# Name Total Patents
#1 Brennan Joseph B 21

Latest patents

Publication Filing date Title
US2912321A Continuous casting and refining of material
CA616183A Method of making electrode strips
CA632479A Electrolytic condensers
CA611224A Electrodes for electrolytic devices
CA666414A Method and apparatus for producing electrically conductive porous strip material
CA613928A Composite metal manufacture
CA613899A Manufacture of condensers
CA578634A Method of casting and apparatus
CA612132A Electrolytic devices
CA603950A Production of degassed material
CA633311A Method of sealing containers for electrolytic devices
CA660854A Electric condensers
CA610792A Electrolytic devices
CA696949A Production of composite metal articles
CA652443A Electrode sheet material
CA596415A Battery electrodes
CA593462A Sealing means for electrolytic device
CA675645A Conductive strip material
CA591664A Methods of and apparatus for spraying metal
CA614410A Porous conductor faced with a dielectric layer containing resin