Learn more

BRITISH DRUG HOUSES LTD

Overview
  • Total Patents
    819
About

BRITISH DRUG HOUSES LTD has a total of 819 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United Kingdom, Canada and United States. Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and machines are ROGER BELLON, ALBERTO ERCOLI and ORGANON LABOR LTD.

Patent filings in countries

World map showing BRITISH DRUG HOUSES LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 186
#2 Canada 100
#3 United States 93
#4 Germany 68
#5 Denmark 64
#6 Austria 62
#7 Switzerland 60
#8 Ireland 60
#9 France 39
#10 Belgium 32
#11 Sweden 21
#12 Brazil 15
#13 Israel 7
#14 Norway 6
#15 Spain 5
#16 Malaysia 1

Patent filings per year

Chart showing BRITISH DRUG HOUSES LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Petrow Vladimir 292
#2 Vladimir Petrow 119
#3 Ellis Bernard 66
#4 Kirk David Neville 52
#5 Feather Peter 45
#6 Burn Derek 40
#7 Stephenson Oliver 39
#8 Petrow V 35
#9 Williamson David Morton 26
#10 Bernard Ellis 23

Latest patents

Publication Filing date Title
US3691212A 17alpha-(1',3'-alkadiynyl)-17beta-acyloxy(17beta-aroyloxy) steroids
IE31443L Polymethylene-bis-quaternary ammonium salts
GB1171251A Preparation of Piperazine Derivatives
GB1152856A 17alpha-(1',3'-Alkadiynyl)-178-Acyloxy-Steroids)
GB1145393A Improvements in or relating to 17-‡-(alka-1',3'-diynyl)-steroids
GB1153394A Method for Reducing the Formation of Bacteria, Algae and Fungi.
IE30754L 17ó-buta-1',3'-diynyl-steroids
GB1134251A Polymethylene-bis-quaternary ammonium salts
IE30163L 6-spirocyclopropyl steroids
IE30151L 17-alkadiynyl steroids
GB1108276A 17ª‡-alka-1',3'-diynyl-oestra-4,9(10)-dien-3-ones
IE29526L 6-(substituted-methyl) steroids
IL25281A 6-fluoromethyl-3-oxo-4,6-dienic and 1,4,6-trienic steroids of the androstane,19-nor androstane and pregnane series and process for the manufacture thereof
GB1134072A 3-unsubstituted steroids
GB1134073A 3-ß-alkyl- and 3-ß-aryl-sulphonyloxy-í¸-steroids
GB1108758A Substituted-17ª‡-buta-1',3'-diynyl-steroids
IE29463L 6 - halomethyl - 3 - oxo - 4, 6 - dienic steroids
IE29409L 6-fluoromethyl- delta4,6 and d1,4,6-steroids
GB1097554A Steroidal 6-methyl-1ª‡,2ª‡-methylene-4,6-dien-3-ones
GB1089945A Steroidal-6-spirocyclopropyl-4-en-3-ones