Koppers Patents

Koppers Patents

In compliance with 35 U.S.C. Section 287, the following information is provided.  The purchase of products covered by any of these patents or unpatented products does not include a license to any of the other patents identified herein, unless the customer receives written authorization by KOPPERS. 

     
     

Koppers Product Name

Patent/App. No.

Pictures

Bonded Insulated Joint

U.S. Patent No. 5,503,331,  7,090,143,  7,490,781,

8,123,144

 Bonded Joint

Poly Gage Plate and Switch Rod Insulator

U.S. Patent No. 6,170,756,  6,305,614,  6,422,479

 Gage Plate

High Flanged Clearance Profile Bar

U.S. Patent No. D497,326,  7,097,112

 High Flg Clr Bar

Insulated Tie Plate

U.S. Patent No. 7,261,244,  8,042,747

 Insulated Plate

Long Angle Bonded Insulated Joint

U.S. Patent No. 7,975,933,  8,113,441,  8,302,878

 LAP Jt.

Bonded Joint Insulator

U.S. Patent No. D547,642

 Bonded Jt Ins

CENTER LINER® Bonded Insulated Joint

U.S. Patent No. D576,023

 CENTER LINER

Short Angle Bonded Insulated Joint

U.S. Patent No. 9,328,464 B2

 SAP Jt.

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