Inventor
HANAWA FUMIAKI
7 patents
⚠️ This page may combine multiple inventors who share the name “HANAWA FUMIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
5 patentsUS6304687B1Oct 16, 2001
Optical waveguide circuit, its manufacturing method and optical waveguide module having the optical waveguide circuit
NIPPON TELEGRAPH & TELEPHONE82 citations95
US4062665ADec 13, 1977
Continuous optical fiber preform fabrication method
NIPPON TELEGRAPH & TELEPHONE102 citations94
US5327517AJul 5, 1994
Guided-wave circuit module and wave-guiding optical component equipped with the module
NIPPON TELEGRAPH & TELEPHONE40 citations91
US4414012ANov 8, 1983
Fabrication methods of doped silica glass and optical fiber preform by using the doped silica glass
NIPPON TELEGRAPH & TELEPHONE45 citations91
US4367085AJan 4, 1983
Method of fabricating multi-mode optical fiber preforms
NIPPON TELEGRAPH & TELEPHONE45 citations91