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STAFFORD ALLEN AND SONS LTD

Overview
  • Total Patents
    12
About

STAFFORD ALLEN AND SONS LTD has a total of 12 patent applications. Its first patent ever was published in 1939. It filed its patents most often in United Kingdom, Ireland and United States. Its main competitors in its focus markets basic materials chemistry, organic fine chemistry and environmental technology are HANGZHOU YULONG CHEMICAL CO LTD, SHENYANG SINOCHEM PESTICIDE CHEMICAL RES AND DEV CO LTD and SYNGENTA PARTCIPATIONS AG.

Patent filings in countries

World map showing STAFFORD ALLEN AND SONS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 Ireland 2
#3 United States 2

Patent filings per year

Chart showing STAFFORD ALLEN AND SONS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Frederick West Trustham 2
#2 Mitchell William 1
#3 Theodore Hewitt John 1
#4 Robert Robinson 1
#5 Harriet Cornforth Rita 1
#6 Lloyd Robert Oliver Villiers 1

Latest patents

Publication Filing date Title
IE29652L Hop extracts
IE28392L Hop concentrate
GB1119414A Isomerised hop extract
GB568011A Improvements in insecticidal preparations
GB559735A Improvements in the manufacture of pyrethrum extracts
GB560694A Improvements in insecticides
US2407452A Preparation of beta-substituted homologues of indole
GB559647A Improvements in the manufacture of rotenone
US2358162A Process for the preparation of compounds containing fused pyridine rings
GB547927A Improvements in insecticidal preparations
GB544897A Improvements in insecticidal compositions and manufacture of ingredients therefor
GB529134A Improvements in the oxidation of propenyl benzine derivatives