Inventor
HAMAKAWA YOSHIHIRO
JP41 patents
⚠️ This page may combine multiple inventors who share the name “HAMAKAWA YOSHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
14 patentsUS4881144ANov 14, 1989
Thin film magnetic head
HITACHI LTD77 citations96
US4814921AMar 21, 1989
Multilayered magnetic films and thin-film magnetic heads using the same as a pole
HITACHI LTD61 citations94
US5461526AOct 24, 1995
Magnetoresistive read head and magnetic storage system using the same
HITACHI LTD46 citations93
US6087027AJul 11, 2000
Magnetic layered material, and magnetic sensor and magnetic storage/read system based thereon
HITACHI LTD23 citations92
US5843589ADec 1, 1998
Magnetic layered material, and magnetic sensor and magnetic storage/read system based thereon
HITACHI LTD41 citations92
US5235591AAug 10, 1993
Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium
HITACHI LTD27 citations92
US5126907AJun 30, 1992
Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density
HITACHI LTD38 citations92
US4760481AJul 26, 1988
Thin film magnetic head having an improved coil
HITACHI LTD25 citations91
US6327123B1Dec 4, 2001
Magnetic head employing magnetoresistive sensor and magnetic storage and retrieval system
HITACHI LTD11 citations74
US4943879AJul 24, 1990
Thin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturing
HITACHI LTD11 citations74
US4766039AAug 23, 1988
Magnetic head made from amorphous magnetic film
HITACHI LTD9 citations74
US4762755AAug 9, 1988
Ferromagnetic material and a magnetic head using the same material
HITACHI LTD14 citations74
US5719729AFeb 17, 1998
Magnetic head and recording and reproducing apparatus having an arrangement for improving coincidence between a magnetic center of a read head and physical center of a write head
HITACHI LTD8 citations73
US6515837B1Feb 4, 2003
Magnetoresistive head and magnetic storage apparatus
HITACHI LTD11 citations72
KANEGAFUCHI CHEMICAL IND
11 patentsUS5419781AMay 30, 1995
Flexible photovoltaic device
KANEGAFUCHI CHEMICAL IND135 citations98
US5127964AJul 7, 1992
Flexible photovoltaic device
KANEGAFUCHI CHEMICAL IND53 citations96
US4773942ASep 27, 1988
Flexible photovoltaic device
KANEGAFUCHI CHEMICAL IND41 citations96
US4634601AJan 6, 1987
Method for production of semiconductor by glow discharge decomposition of silane
KANEGAFUCHI CHEMICAL IND100 citations96
US4612409ASep 16, 1986
Flexible photovoltaic device
KANEGAFUCHI CHEMICAL IND80 citations96
US4450316AMay 22, 1984
Amorphous silicon photovoltaic device having two-layer transparent electrode
KANEGAFUCHI CHEMICAL IND44 citations96
US4544423AOct 1, 1985
Amorphous silicon semiconductor and process for same
KANEGAFUCHI CHEMICAL IND38 citations93
US4875943AOct 24, 1989
Flexible photovoltaic device
KANEGAFUCHI CHEMICAL IND11 citations82
US4499331AFeb 12, 1985
Amorphous semiconductor and amorphous silicon photovoltaic device
KANEGAFUCHI CHEMICAL IND13 citations82
US4491682AJan 1, 1985
Amorphous silicon photovoltaic device including a two-layer transparent electrode
KANEGAFUCHI CHEMICAL IND7 citations74
US4670762AJun 2, 1987
Amorphous silicon semiconductor and process for same
KANEGAFUCHI CHEMICAL IND0 citations52
HAMAKAWA YOSHIHIRO
8 patentsUS4410559AOct 18, 1983
Method of forming amorphous silicon films
HAMAKAWA YOSHIHIRO30 citations92
US4388482AJun 14, 1983
High-voltage photovoltaic cell having a heterojunction of amorphous semiconductor and amorphous silicon
HAMAKAWA YOSHIHIRO49 citations92
US4271328AJun 2, 1981
Photovoltaic device
HAMAKAWA YOSHIHIRO34 citations91
US4385199AMay 24, 1983
Photovoltaic cell having a hetero junction of amorphous silicon carbide and amorphous silicon
HAMAKAWA YOSHIHIRO20 citations82
US4385200AMay 24, 1983
Photovoltaic cell having a hetero junction of amorphous silicon carbide and amorphous silicon
HAMAKAWA YOSHIHIRO22 citations82
US4735396AApr 5, 1988
Substrate for manufacturing single crystal thin films
HAMAKAWA YOSHIHIRO6 citations71
US4717630AJan 5, 1988
Substrate for manufacturing single crystal thin films
HAMAKAWA YOSHIHIRO6 citations71
US4758399AJul 19, 1988
Substrate for manufacturing single crystal thin films
HAMAKAWA YOSHIHIRO4 citations60