Narayan Das

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Westmont, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Coating compositions and method for the treatment of metal surfaces
- Patent number 4,470,853
- Issue date Sep 11, 1984
- Coral Chemical Company
- Narayan Das
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Surface treatment for aluminum and aluminum alloys
- Patent number 4,422,886
- 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
Coated sheet material and container therefrom
- Patent number 4,381,064
- Issue date Apr 26, 1983
- National Can Corporation
- Narayan Das
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Phosphate and ester coating method
- Patent number 4,285,223
- Issue date Aug 25, 1981
- Narayan Das
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Coating solution for metal surfaces
- Patent number 3,964,936
- Issue date Jun 22, 1976
- Amchem Products, Inc.
- Narayan Das
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...