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SIGMA CHEMICAL COMPANY
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ST. LOUIS, MO, US
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Patents Grants
last 30 patents
Information
Patent Grant
AZT immunoassays, derivatives, conjugates and antibodies
Patent number
5,380,825
Issue date
Jan 10, 1995
Sigma Chemical Company
Kenneth J. Stenglein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
ddI immunoassays, derivatives, conjugates and antibodies
Patent number
5,221,611
Issue date
Jun 22, 1993
Sigma Chemical Company
Kenneth J. Stenglein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
AZT immunoassays, derivatives, conjugates and antibodies
Patent number
5,051,361
Issue date
Sep 24, 1991
Sigma Chemical Company
Kenneth J. Stenglein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Stabilized stain solutions containing aliphatic and aromatic alcohols
Patent number
4,816,244
Issue date
Mar 28, 1989
Sigma Chemical Company
William H. Starkweather
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Rapid, accurate method of separation of oxalate from urine and othe...
Patent number
4,539,118
Issue date
Sep 3, 1985
Sigma Chemical Company
Quincy E. Crider
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Colorimetric cholesterol assay
Patent number
4,211,531
Issue date
Jul 8, 1980
Sigma Chemical Company
Manik L. Das
G01 - MEASURING TESTING
Information
Patent Grant
Enzyme determination method
Patent number
4,151,043
Issue date
Apr 24, 1979
Sigma Chemical Company
Rabindra N. Bhattacharyya
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Bilirubin determination
Patent number
4,030,885
Issue date
Jun 21, 1977
Sigma Chemical Company
Manik L. Das
G01 - MEASURING TESTING
Information
Patent Grant
Alkaline phosphatase isoenzyme determination
Patent number
4,030,995
Issue date
Jun 21, 1977
Sigma Chemical Company
William H. Starkweather
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Reagent and method for determination of globulin
Patent number
3,985,506
Issue date
Oct 12, 1976
Sigma Chemical Company
Manik L. Das
G01 - MEASURING TESTING
Information
Patent Grant
Lyophilized human hemoglobin standard for colorimetric determinatio...
Patent number
3,964,865
Issue date
Jun 22, 1976
Sigma Chemical Company
Manik L. Das
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
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Trademark
74005700 - SIGMA BULK CHEMICALS
Serial number
74005700
Registration number
1660033
Filing date
Nov 28, 1989
Sigma Chemical Company
35 - Advertising
Information
Trademark
73834631 - SIGMA IMMUNOTES
Serial number
73834631
Registration number
1602239
Filing date
Oct 30, 1989
Sigma Chemical Company
16 - Paper, cardboard and goods made from these materials, not included in other classes
Information
Trademark
73740044 - EXTRAVIDIN
Serial number
73740044
Registration number
1567740
Filing date
Jul 15, 1988
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73614147 - COMPUTROL
Serial number
73614147
Registration number
1451241
Filing date
Aug 11, 1986
Sigma Chemical Company
35 - Advertising
Information
Trademark
73614287 - ACCUSET
Serial number
73614287
Registration number
1450225
Filing date
Aug 11, 1986
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73614148 - ACCUSTAIN
Serial number
73614148
Registration number
1451598
Filing date
Aug 11, 1986
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73533322 - CATABATE
Serial number
73533322
Registration number
1365185
Filing date
Apr 22, 1985
Sigma Chemical Company
5 - Pharmaceutical and veterinary preparations
Information
Trademark
73458463 - SIGMA DIAGNOSTICS
Serial number
73458463
Registration number
1312898
Filing date
Dec 27, 1983
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73451463 - ACCUTROL
Serial number
73451463
Filing date
Nov 7, 1983
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73451464 - SIGMA DIAGNOSTICS
Serial number
73451464
Registration number
1311752
Filing date
Nov 7, 1983
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73385961 - LIN-TROL
Serial number
73385961
Registration number
1257246
Filing date
Sep 16, 1982
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73301589 - SIGMA-SCREENS
Serial number
73301589
Registration number
1230716
Filing date
Mar 17, 1981
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73258322 - HISTOCHROME
Serial number
73258322
Registration number
1175680
Filing date
Apr 16, 1980
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73235209 - SIGMASYSTEM
Serial number
73235209
Registration number
1160524
Filing date
Oct 15, 1979
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73235207 - HISTOZYME
Serial number
73235207
Registration number
1163250
Filing date
Oct 15, 1979
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73208831 - FILTER-PHASE
Serial number
73208831
Registration number
1138385
Filing date
Mar 26, 1979
SIGMA CHEMICAL COMPANY
16 - Paper, cardboard and goods made from these materials, not included in other classes
Information
Trademark
73208387 - KETOTROL
Serial number
73208387
Registration number
1184300
Filing date
Mar 22, 1979
Sigma Chemical Company
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73184156 - ISOPAC
Serial number
73184156
Registration number
1125898
Filing date
Aug 31, 1978
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73160547 - HISTOPAQUE
Serial number
73160547
Registration number
1102478
Filing date
Mar 2, 1978
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73152424 - DALTON MARK VI
Serial number
73152424
Registration number
1097808
Filing date
Dec 19, 1977
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73152294 - ATROXIN
Serial number
73152294
Registration number
1097807
Filing date
Dec 16, 1977
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73109976 - FLUORO-ZYME
Serial number
73109976
Registration number
1069669
Filing date
Dec 17, 1976
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73109982 - BCIP
Serial number
73109982
Registration number
1069670
Filing date
Dec 17, 1976
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73093990 - ECLECTIC
Serial number
73093990
Registration number
1059729
Filing date
Jul 19, 1976
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73090564 - ISOTROL
Serial number
73090564
Registration number
1069641
Filing date
Jun 16, 1976
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73068695 - CELLU-STAIN
Serial number
73068695
Registration number
1050437
Filing date
Nov 11, 1975
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73068694 - AGARO-STAIN
Serial number
73068694
Registration number
1053808
Filing date
Nov 11, 1975
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73048469 - GLUCURASE
Serial number
73048469
Registration number
1036005
Filing date
Apr 3, 1975
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
72392811 - SIGMACOTE
Serial number
72392811
Registration number
939408
Filing date
May 21, 1971
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
72315504 - SIGMA 7-9
Serial number
72315504
Registration number
897641
Filing date
Dec 31, 1968
SIGMA CHEMICAL COMPANY
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry