Learn more

BRENNAN HELEN E

Overview
  • Total Patents
    15
About

BRENNAN HELEN E has a total of 15 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, materials and metallurgy and surface technology and coating are WIRTZ MFG CO, BRENNAN JOSEPH B and CHLORIDE OVERSEAS LTD.

Patent filings in countries

World map showing BRENNAN HELEN Es patent filings in countries
# Country Total Patents
#1 United States 15

Patent filings per year

Chart showing BRENNAN HELEN Es patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Brennan Helen E 15

Latest patents

Publication Filing date Title
US2974041A Method of producing electrically conductive porous strip material
US2993848A Method of forming a dielectric oxide film on a porous metal strip
US2972185A Method of producing strip material
US2912731A Method for casting group iv metals
US2878537A Method and apparatus for casting
US3052001A Centrifugal casting apparatus
US2873491A Apparatus for casting metallic articles
US3046649A Method of producing composite metal articles
US2903759A Casting of refractory metals
US2985701A Storage battery electrodes
US2985803A Reinforced electrode and method of making same
US2965513A Formation of metal strip under controlled pressure
US2870689A Method of producing strip material
US2868702A Method of forming a dielectric oxide film on a metal strip
US2864137A Apparatus and method for producing metal strip