Notice Concerning Patents for Optical Fiber Polishing Machinery

Optical fiber polishing machinery of Seikoh Giken achieved as a global first, the polishing of spherical optical fiber end faces in high-volume production, predicated on the principle of an elastic polishing base in rotation/revolution motion developed by Seikoh Giken.
For this optical fiber polishing machinery, patents have been acquired or are under application in countries around the world as shown below. As for the indicated registrations in Japan, it should be noted that unless a license agreement has been concluded with Seikoh Giken, the manufacture and marketing of the products stated in the patent constitutes an infringement of the patent of Seikoh Giken, as does the buying of products manufactured and marketed without a license agreement.

Patent for rotation/revolution polishing machinery for high-volume production

• Japan: No. 2133258; No. 2818146; No. 2787293
• America: No. 4979334

Patents concerning the SFP-550 series

• Japan: No. 3027063
• America: No. 5351445
• Germany: No. 69317988
• France: No. 0602517
• United Kingdom: No. 0602517

Patents concerning the SFP-550S series

• America: No. 6808314
• Europe: No. 1284173
• China: No. 02130360.6
• Taiwan: No. 180724
• Korea: No. 0514597

Patents concerning the SFP-560A series

• Japan: No. 6324556
• PCT: Under application