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STEPHENS JAMES

Overview
  • Total Patents
    12
About

STEPHENS JAMES has a total of 12 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United Kingdom and United States. Its main competitors in its focus markets environmental technology, biotechnology and materials and metallurgy are Ductor Oy, SWEETWATER ENERGY INC and BIONAVITAS INC.

Patent filings in countries

World map showing STEPHENS JAMESs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 United States 4

Patent filings per year

Chart showing STEPHENS JAMESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stephens James 12
#2 Blosser Gaylen 1
#3 Jones Charles 1

Latest patents

Publication Filing date Title
US2014154754A1 Systems and methods for anaerobic digestion and collection of products
US2011041446A1 Shingle and Method of Using the Shingle
GB190917345A Process and Apparatus for the Elimination of Chlorine and Zinc and the Recovery of Tin or Lead from Tin or Terne Scruff, Skimmings or Residues.
GB190911316A Improvements in Carburetters for Internal Combustion Engines.
GB190626023A An Improved Railways for Recreation
US837144A Automatic car-coupling.
GB190418230A Improvements in Reversible and Feathering Screw Propellers
GB190400104A Improvements in Internal Combustion Engines
US759323A Stern-tube for screw-propeller shafts.
GB190224375A Improvements in Stern-tubes, for Screw-propeller Shafts.
GB189618831A Improvements in Oil Engines for Marine and Vehicular Propulsion.
GB189321905A Improvements in Screw Propellers.