Inventor
YAMADA YASUFUMI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA YASUFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
7 patentsUS4750799AJun 14, 1988
Hybrid optical integrated circuit
NIPPON TELEGRAPH & TELEPHONE202 citations98
US6480639B2Nov 12, 2002
Optical module
NIPPON TELEGRAPH & TELEPHONE62 citations96
US6222967B1Apr 24, 2001
Packaging platform, optical module using the platform, and methods for producing the platform and the module
NIPPON TELEGRAPH & TELEPHONE110 citations96
US6027254AFeb 22, 2000
Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platform
NIPPON TELEGRAPH & TELEPHONE77 citations96
US5621837AApr 15, 1997
Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit and process for fabricating platform
NIPPON TELEGRAPH & TELEPHONE86 citations96
US4735677AApr 5, 1988
Method for fabricating hybrid optical integrated circuit
NIPPON TELEGRAPH & TELEPHONE115 citations96
US5327517AJul 5, 1994
Guided-wave circuit module and wave-guiding optical component equipped with the module
NIPPON TELEGRAPH & TELEPHONE40 citations91
RICOH KK
6 patentsUS7072566B2Jul 4, 2006
Ultrashort-pulse laser-working method and apparatus and structural bodies produced by using the same
RICOH KK20 citations92
US6803540B2Oct 12, 2004
Method and apparatus for processing three-dimensional structure, method for producing three-dimensional shape product and three-dimensional structure
RICOH KK19 citations92
US6816178B2Nov 9, 2004
Method and apparatus for color image forming capable of performing a precise synchronization between toner image forming per color and its overlaying
RICOH KK24 citations91
US7518086B2Apr 14, 2009
Method and device for adjusting wavelength distribution pattern in laser
RICOH KK13 citations84
US7343127B2Mar 11, 2008
Mark forming method for moving body and moving body having mark
RICOH KK9 citations84
US7482052B2Jan 27, 2009
Method for processing by laser, apparatus for processing by laser, and three-dimensional structure
RICOH KK1 citations52
RICOH CO LTD
4 patentsUS8049138B2Nov 1, 2011
Method and apparatus for processing three-dimensional structure, method for producing three-dimensional shape product and three-dimensional structure
RICOH CO LTD10 citations84
US11808855B2Nov 7, 2023
Optical device, range sensor using optical device, and mobile object
RICOH CO LTD2 citations72
US7910869B2Mar 22, 2011
Laser processing apparatus using distinct horizontal and vertical data sets
RICOH CO LTD4 citations63
US11579289B2Feb 14, 2023
Distance measuring apparatus and mobile body including the same
RICOH CO LTD0 citations49