Inventor
TAKEKAWA SHUNJI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAKEKAWA SHUNJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT INST RES INORGANIC MAT
4 patentsUS6673330B1Jan 6, 2004
Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal
NAT INST RES INORGANIC MAT19 citations92
US6464777B2Oct 15, 2002
Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal
NAT INST RES INORGANIC MAT19 citations92
US6747787B2Jun 8, 2004
Optically functional device, single crystal substrate for the device and method for its use
NAT INST RES INORGANIC MAT10 citations74
US6624923B2Sep 23, 2003
Optically functional device, single crystal substrate for the device and method for its use
NAT INST RES INORGANIC MAT8 citations74
DIRECTOR GENERAL OF NAT INST F
4 patentsUS6670079B1Dec 30, 2003
Photorefractive material
DIRECTOR GENERAL OF NAT INST F21 citations91
US6535472B1Mar 18, 2003
Hologram recording apparatus and method therefor
DIRECTOR GENERAL OF NAT INST F31 citations91
US6373806B1Apr 16, 2002
Two-color hologram recording/reproducing apparatus
DIRECTOR GENERAL OF NAT INST F46 citations91
US6473208B1Oct 29, 2002
Two-color holographic recording apparatus
DIRECTOR GENERAL OF NAT INST F3 citations61
NAT INST FOR MATERIALS SCIENCE
4 patentsUS7403327B2Jul 22, 2008
Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element
NAT INST FOR MATERIALS SCIENCE2 citations63
US6814800B2Nov 9, 2004
Method for treating photorefractive effect of an optical device and photorefractive effect-suppressed optical frequency conversion device
NAT INST FOR MATERIALS SCIENCE2 citations63
US7446930B2Nov 4, 2008
Method of inverting polarization by controlling defect density or degree of order of lattice points
NAT INST FOR MATERIALS SCIENCE2 citations58
US7999983B2Aug 16, 2011
Lens material, optical electronic component and optical electronic device
NAT INST FOR MATERIALS SCIENCE0 citations50