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STEFFEN SYLVESTER L

Overview
  • Total Patents
    11
About

STEFFEN SYLVESTER L has a total of 11 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States and Canada. Its main competitors in its focus markets chemical engineering, environmental technology and packaging and shipping are LAURENCOT JEAN, HEUTROCKNUNG SR GMBH and HANS VON SYBEL DR ING.

Patent filings in countries

World map showing STEFFEN SYLVESTER Ls patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 2

Patent filings per year

Chart showing STEFFEN SYLVESTER Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Steffen Sylvester L 11
#2 Steffen Vincent B 1

Latest patents

Publication Filing date Title
CA1090562A Grain drying bin
US4800653A Method and apparatus for controlling the drying and cooling of field-harvested seeds in storage
US4247989A Method for identifying and maintaining a dormancy index in stored grain
US4256029A Pressure reducing exhaust method and structure for ventilated grain bins
US4148147A Method for controlling the curing of field-harvested grains with minimum energy consumption
US4077134A Method and structure for optimizing atmospheric environment to preserve stored food grains in the curing and post curing state
US4053991A Automatic control for maintaining equilibrium temperature/moisture between stored grain and atmosphere
US4045880A Solar grain drying apparatus
US4045878A Ventilation process for inducing biochemical reactions in stored food grain while preserving dormancy
US4020565A Draft inducing roof for storage structures
CA1086052A Method and apparatus for controlling the drying and cooling of field harvested seeds in storage