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ROYSTER CO

Overview
  • Total Patents
    19
About

ROYSTER CO has a total of 19 patent applications. Its first patent ever was published in 1969. It filed its patents most often in United States, Canada and Ireland. Its main competitors in its focus markets basic materials chemistry, chemical engineering and materials and metallurgy are LIQUID FERTILISER PTY LTD, SINOCHEM SHANDONG FERTILIZER CO LTD and YANG YOUFENG.

Patent filings in countries

World map showing ROYSTER COs patent filings in countries
# Country Total Patents
#1 United States 5
#2 Canada 4
#3 Ireland 4
#4 Germany 2
#5 France 2
#6 United Kingdom 2

Patent filings per year

Chart showing ROYSTER COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Seymour James E 9
#2 Capps Ernest R 1
#3 Seymour J 1

Latest patents

Publication Filing date Title
US4561818A Apparatus for handling blended dry particulate materials
US4174376A Process for manufacturing potassium polyphosphate
US3885946A Process for reducing the concentration of fertilizer particulates in exhaust stack gases
DE2310309A1 Reduced dust emission by granular fertilisers - after spraying with n-contg salt solns
DE2310310A1 Reduced dust emission by granular fertilisers - after spraying with n-contg salt solns
CA1005661A High analysis thixotropic fluid suspension fertilizer
CA1005660A Process for the manufacture of thixotropic gel fertilizers
CA980596A Process for reducing emission of dust by granular fertilizer compositions
CA974790A Process for reducing the concentration of fertilizer particulates in exhaust stack gases
GB1392462A Process for reducing emission of dust by granular fertilizer compositions
GB1381526A Process for redicing the concentration of fertilizer particulates in exhaust stack gases
IE36087B1 Process for reducing emission of dust by granular fertilizer compositions
IE36046B1 Process for reducing the concentration of fertilizer particulates in exhaust stack gases
IE37032B1 Fluid suspension fertilizer
IE37033B1 Process for the manufacture of fertilizers
US3734707A Process for reducing emission of dust by granular fertilizer compositions
US3598315A Flexible spargers in apparatus for producing ammonium phosphate fertilizers