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SIGMA CHEM CO

Overview
  • Total Patents
    58
About

SIGMA CHEM CO has a total of 58 patent applications. Its first patent ever was published in 1958. It filed its patents most often in United States, United Kingdom and Austria. Its main competitors in its focus markets biotechnology, measurement and machines are MOLECULAR DIAGNOSTICS INC, LAB MOLECULAR BIOPHOTONICS and XZILLION GMBH & CO KG.

Patent filings per year

Chart showing SIGMA CHEM COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Broida Daniel 10
#2 Daniel Broida 9
#3 Stenglein Kenneth J 9
#4 Murray Dennis M 9
#5 Louis Berger 5
#6 Berger Louis 4
#7 Das Manik L 4
#8 Broida D 4
#9 Floyd Bressler Leo 2
#10 Berger L 2

Latest patents

Publication Filing date Title
US5221611A Ddi immunoassays, derivatives, conjugates and antibodies
US5051361A AZT immunoassays, derivatives, conjugates and antibodies
US4816244A Stabilized stain solutions containing aliphatic and aromatic alcohols
US4539118A Rapid, accurate method of separation of oxalate from urine and other biological fluids
US4211531A Colorimetric cholesterol assay
US4151043A Enzyme determination method
US4030995A Alkaline phosphatase isoenzyme determination
US4030885A Bilirubin determination
US3985506A Reagent and method for determination of globulin
US3964865A Lyophilized human hemoglobin standard for colorimetric determination of total hemoglobin
GB1194207A Spectrophotometric Determination of Creatine Phosphokinase
US3468289A Insect transporting package
US3403077A Colorimetric determination of creatine phosphokinase
GB1060690A Tris (hydroxy methyl) amino methane salts of nucleotides
GB1018522A Planchet
US3140796A Planchet
GB923763A Colorimetric determination of lactic dehydrogenase
US3152116A Tris (hydroxy methyl) amino methane salts of nucleotides
US2996436A Process for the colorimetric determination of lactic dehydrogenase
CA767763A Planchet