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Chicago, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Surface treatment for aluminum and aluminum alloys
Patent number
4,422,886
Issue date
Dec 27, 1983
Chemical Systems, Inc.
Narayan Das
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Surface treatment for aluminum and aluminum alloys
Patent number
4,391,652
Issue date
Jul 5, 1983
Chemical Systems, Inc.
Narayan Das
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Dry process for forming polycarbonate membranes
Patent number
4,048,271
Issue date
Sep 13, 1977
Chemical Systems, Inc.
Robert E. Kesting
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Nonbiodegradable polymers
Patent number
4,035,457
Issue date
Jul 12, 1977
Chemical Systems Incorporated
Robert E. Kesting
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for spinning dry-fiber cellulose acetate hollow fiber membr...
Patent number
4,035,459
Issue date
Jul 12, 1977
Chemical Systems, Inc.
Robert E. Kesting
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Microporous polyester membranes and polymer assisted phase inversio...
Patent number
3,957,651
Issue date
May 18, 1976
Chemical Systems Incorporated
Robert E. Kesting
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Integral microporous high void volume polycarbonate membranes and a...
Patent number
3,945,926
Issue date
Mar 23, 1976
Chemical Systems, Inc.
Robert E. Kesting
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
72419646 - TYRANN-II
Serial number
72419646
Registration number
971310
Filing date
Mar 27, 1972
CHEMICAL SYSTEMS INCORPORATED
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
72333373 - CSC
Serial number
72333373
Registration number
915368
Filing date
Jul 24, 1969
CHEMICAL SYSTEMS CORPORATION
19 - Building materials (non-metallic)