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SCHWEIZERHALL CHEM FAB

Overview
  • Total Patents
    62
About

SCHWEIZERHALL CHEM FAB has a total of 62 patent applications. Its first patent ever was published in 1950. It filed its patents most often in Switzerland, United Kingdom and Germany. Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and biotechnology are KREWEL LEUFFEN GMBH, RECH S ET TECH APPLIQUEES and ARCH PHARMALABS LTD.

Patent filings in countries

World map showing SCHWEIZERHALL CHEM FABs patent filings in countries
# Country Total Patents
#1 Switzerland 20
#2 United Kingdom 11
#3 Germany 7
#4 France 6
#5 Canada 5
#6 Spain 4
#7 Sweden 3
#8 Austria 2
#9 Denmark 2
#10 United States 2

Patent filings per year

Chart showing SCHWEIZERHALL CHEM FABs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Prof Erlenmeyer Hans Dr 5
#2 Muehle H 5
#3 Fabrik Schweizerhall Chemische 5
#4 Muhle Herbert 3
#5 Muehle Herbert Dr 3
#6 Herbert Muehle Dr 3
#7 Sc Nat Muehle Herbert Dr 3
#8 Herbert Dr 2
#9 Muehle 2
#10 Herbert Muhle 2

Latest patents

Publication Filing date Title
CH583658A5 Working up waste cyanide products - by acidification to form hydrogen cyanide which is subsequently neutralised
ES306669A1 Procedure for the preparation of 4-amino-antipirinic derivatives. (Machine-translation by Google Translate, not legally binding)
ES306668A1 Procedure for the preparation of 4-amino-antipirinic derivatives. (Machine-translation by Google Translate, not legally binding)
GB1064525A Process of preparing new isophthalic acid derivatives
GB1071198A New isophthalic acid derivatives, and a process for their preparation
US3312695A Isophthalic acid derivatives
GB858848A Improvements in hydrogen peroxide adducts of pyridine compounds and process for the manufacture thereof
ES246742A1 Procedure for the preparation of organic salts of replaced quinolines (Machine-translation by Google Translate, not legally binding)
GB876678A Organic salts of substituted quinolines and process for the manufacture thereof
GB816319A Sulphonyl-urea derivatives
GB753937A Complex cobalt salts of carboxylic acid hydrazides
GB743666A Manufacture of complex metal salts of carboxylic acid hydrazides
GB744483A Manufacture of 4-aminosalicylic acid salts of heterocyclic carboxylic hydrazides andof their complex copper, gold and iron salts
CA772158A Process for preparing 4-amino-antipyridine derivatives
CA677792A Meta-dialkylaminoethoxybenzoic acid esters, their hydrochlorides and process for the preparation of these compounds
CA786791A Isophthalic acid derivatives and their preparation
CA786792A Process for preparing 4-amino-antipyrine derivatives
CA657129A Organic salts of substituted quinolines and process for the manufacture thereof