Inventor
ISHIDA MASAHIKO
JP94 patents
⚠️ This page may combine multiple inventors who share the name “ISHIDA MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
12 patentsUS4297216AOct 27, 1981
Method for treatment of biochemical waste
HITACHI LTD57 citations94
US4067801AJan 10, 1978
Process and system for anaerobic treatment of biochemical waste
HITACHI LTD77 citations94
US5166067ANov 24, 1992
Culturing method, system and apparatus for cell culture
HITACHI LTD26 citations92
US4451567AMay 29, 1984
Method for pretreatment of cellulosic materials
HITACHI LTD46 citations92
US4137158AJan 30, 1979
Process for tertiary treatment of waste waters from anaerobic digestion treatment process
HITACHI LTD39 citations91
US5162204ANov 10, 1992
Apparatus and method of culturing and diagnosis of animal cells using image processing
HITACHI LTD27 citations90
US5753498AMay 19, 1998
Garbage treating apparatus
HITACHI LTD25 citations87
US5227066AJul 13, 1993
Apparatus for separating living cells
HITACHI LTD14 citations74
US5030361AJul 9, 1991
Method of separating living cells
HITACHI LTD12 citations74
US5264131ANov 23, 1993
Oxygen-dissolving process and an apparatus for practicing the process
HITACHI LTD11 citations73
US4888285ADec 19, 1989
Enzyme immobilization on a water-insoluble amino group-containing carrier
HITACHI LTD13 citations73
US4734365AMar 29, 1988
Process for liquefying starch
HITACHI LTD6 citations70
AGENCY IND SCIENCE TECHN
7 patentsUS4491522AJan 1, 1985
Anaerobic digestion process for organic wastes
AGENCY IND SCIENCE TECHN143 citations98
US4354936AOct 19, 1982
Anaerobic digestion process
AGENCY IND SCIENCE TECHN88 citations96
US4213857AJul 22, 1980
Anaerobic digestion process
AGENCY IND SCIENCE TECHN79 citations96
US4510243AApr 9, 1985
Anaerobic digestion process of wastes containing cellulose
AGENCY IND SCIENCE TECHN49 citations92
US4442006AApr 10, 1984
Anaerobic digestion process
AGENCY IND SCIENCE TECHN37 citations92
US4288550ASep 8, 1981
Treating process of garbage contained wastes
AGENCY IND SCIENCE TECHN35 citations92
US4522721AJun 11, 1985
Treating process of organic wastes
AGENCY IND SCIENCE TECHN14 citations74
SHINETSU CHEMICAL CO
7 patentsUS10611635B2Apr 7, 2020
Hydrogen gas recovery system and hydrogen gas separation and recovery method
SHINETSU CHEMICAL CO1 citations63
US12479733B2Nov 25, 2025
Polysilicon rod and method for manufacturing polysilicon rod
SHINETSU CHEMICAL CO0 citations62
US12162762B2Dec 10, 2024
Polycrystalline silicon rod
SHINETSU CHEMICAL CO0 citations61
US11673809B2Jun 13, 2023
Apparatus for manufacturing polysilicon rod
SHINETSU CHEMICAL CO1 citations61
US11565939B2Jan 31, 2023
Silicon core wire
SHINETSU CHEMICAL CO0 citations61
US11505862B2Nov 22, 2022
Method for preventing contamination of base plate
SHINETSU CHEMICAL CO0 citations61
US11345603B2May 31, 2022
Polycrystalline silicon bar, polycrystalline silicon rod, and manufacturing method thereof
SHINETSU CHEMICAL CO0 citations61
HORIBA LTD
5 patentsUS5041723AAug 20, 1991
Infrared ray detector with multiple optical filters
HORIBA LTD76 citations96
US5572032ANov 5, 1996
Gas analyzer and gas-analyzing mechanism
HORIBA LTD20 citations92
US4747666AMay 31, 1988
Multi-layer interference filter
HORIBA LTD24 citations82
US5138485AAug 11, 1992
Optical filter for measurement of combustion gases and method of manufacturing
HORIBA LTD7 citations73
US5672874ASep 30, 1997
Infrared oil-concentration meter
HORIBA LTD16 citations68
CANON KK
5 patentsUS4877680AOct 31, 1989
Recording medium with non-porous ink-receiving layer
CANON KK118 citations96
US5101218AMar 31, 1992
Recording medium with non-porous ink-receiving layer and method of use thereof
CANON KK49 citations95
US4868581ASep 19, 1989
Ink-receiving composite polymer material
CANON KK51 citations92
US4801497AJan 31, 1989
Recording medium
CANON KK29 citations92
US4783376ANov 8, 1988
Light-transmissive recording medium and image formation method using the same
CANON KK19 citations82
NEC CORP
5 patentsUS7514197B2Apr 7, 2009
Resist and method of forming resist pattern
NEC CORP9 citations83
US10326069B2Jun 18, 2019
Thermoelectric conversion element and method for making the same
NEC CORP2 citations72
US11417818B2Aug 16, 2022
Thermoelectric conversion element
NEC CORP0 citations62
US11411156B2Aug 9, 2022
Heat exchange device, heat exchange system, and heat exchange method
NEC CORP1 citations62
US7658798B2Feb 9, 2010
Method for fixing metal particles and method for manufacturing substrate containing metal particles, method for manufacturing substrate containing carbon nanotube, and method for manufacturing substrate containing semiconductor-crystalline rod, employing thereof
NEC CORP2 citations62
SEIKISUI CHEMICAL CO LTD
2 patentsMITSUBISHI SHINDO KK
2 patentsHITACHI ENG CO LTD
1 patentIKEGAI IRON WORKS LTD
1 patentTOKAI SHOJI CO LTD
1 patentYAZAKI CORP
1 patentTAIHO IND CO
1 patentShowing the top 50 of 94 patents by PatentIndex Score.