Inventor
EJIMA SEIKI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “EJIMA SEIKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHINETSU CHEMICAL CO
7 patentsUS6615614B1Sep 9, 2003
Method for preparing optical waveguide substrate
SHINETSU CHEMICAL CO52 citations91
US6564585B2May 20, 2003
Method for producing a second-order nonlinear glass material
SHINETSU CHEMICAL CO18 citations89
US6301412B1Oct 9, 2001
Apparatus and method for making multi-branching optical coupler
SHINETSU CHEMICAL CO15 citations80
US6681074B1Jan 20, 2004
Method for producing base material for optical fiber having deformed first clad, base material for optical fiber and optical fiber
SHINETSU CHEMICAL CO3 citations60
US6380109B1Apr 30, 2002
Second-order nonlinear glass material
SHINETSU CHEMICAL CO2 citations60
US6701752B2Mar 9, 2004
Synthesized silica glass optical member and method for manufacturing the same
SHINETSU CHEMICAL CO0 citations50
US6436728B2Aug 20, 2002
Method for making an optical waveguide substrate
SHINETSU CHEMICAL CO1 citations49