Inventor
MURAYAMA SEIICHI
JP44 patents
⚠️ This page may combine multiple inventors who share the name “MURAYAMA SEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
33 patentsUS4908492AMar 13, 1990
Microwave plasma production apparatus
HITACHI LTD128 citations98
US4716852AJan 5, 1988
Apparatus for thin film formation using photo-induced chemical reaction
HITACHI LTD61 citations96
US4615756AOct 7, 1986
Dry etching apparatus
HITACHI LTD54 citations96
US4933602AJun 12, 1990
Apparatus for generating light by utilizing microwave
HITACHI LTD35 citations93
US4715054ADec 22, 1987
Plasma x-ray source
HITACHI LTD30 citations93
US5372916ADec 13, 1994
X-ray exposure method with an X-ray mask comprising phase shifter sidewalls
HITACHI LTD44 citations92
US4963735AOct 16, 1990
Plasma source mass spectrometer
HITACHI LTD48 citations92
US4902099AFeb 20, 1990
Trace element spectrometry with plasma source
HITACHI LTD28 citations92
US4678536AJul 7, 1987
Method of photochemical surface treatment
HITACHI LTD37 citations92
US4643799AFeb 17, 1987
Method of dry etching
HITACHI LTD38 citations92
US5034655AJul 23, 1991
Circular fluorescent lamp
HITACHI LTD30 citations91
US4622485ANov 11, 1986
Discharge lamp with neon gas in outer tube
HITACHI LTD22 citations81
US4587460AMay 6, 1986
High-pressure discharge lamp operating circuit
HITACHI LTD23 citations81
US4879493ANov 7, 1989
Low-pressure discharge lamp
HITACHI LTD22 citations79
US4841556AJun 20, 1989
Plasma X-ray source
HITACHI LTD13 citations74
US4627086ADec 2, 1986
Plasma X-ray source
HITACHI LTD10 citations74
US4611148ASep 9, 1986
Low-pressure mercury vapor discharge lamp
HITACHI LTD5 citations74
US4523096AJun 11, 1985
Liquid chromatography apparatus
HITACHI LTD8 citations74
US4653908AMar 31, 1987
Grazing incidence reflection spectrometer
HITACHI LTD16 citations73
US4097781AJun 27, 1978
Atomic spectrum light source device
HITACHI LTD9 citations73
US4095142AJun 13, 1978
High frequency discharge lamp for a spectral-line source
HITACHI LTD13 citations73
US4803406AFeb 7, 1989
High-pressure discharge lamp operating circuit
HITACHI LTD17 citations71
US4165937AAug 28, 1979
Magneto-optic spectrophotometer
HITACHI LTD11 citations71
US4803401AFeb 7, 1989
Compact fluorescent lamp
HITACHI LTD4 citations63
US4642512AFeb 10, 1987
Stain resistant fluorescent lamp
HITACHI LTD6 citations63
US4622493ANov 11, 1986
High intensity ultraviolet light source
HITACHI LTD2 citations63
US4587453AMay 6, 1986
Low-pressure mercury vapor discharge lamp
HITACHI LTD3 citations63
US4339201AJul 13, 1982
Temperature control system for an element analyzer
HITACHI LTD5 citations63
US4171912AOct 23, 1979
Element analyzer exploiting a magneto-optic effect
HITACHI LTD2 citations63
US4298284ANov 3, 1981
Method and apparatus for measuring magnetooptic anisotropy
HITACHI LTD6 citations61
US4166697ASep 4, 1979
Spectrophotometer employing magneto-optic effect
HITACHI LTD5 citations59
US4697121ASep 29, 1987
Low-pressure mercury vapor discharge lamp
HITACHI LTD0 citations52
US4936252AJun 26, 1990
Equipment for manufacturing semiconductor devices
HITACHI LTD1 citations51
TOSHIBA KK
9 patentsUS6921476B2Jul 26, 2005
UV-assisted advanced-ozonation water treatment system and advanced-ozonation module
TOSHIBA KK23 citations91
US7838845B2Nov 23, 2010
Ultraviolet irradiation water treatment apparatus
TOSHIBA KK14 citations81
US9873619B2Jan 23, 2018
Apparatus for measuring hydroxyl radicals and liquid treatment apparatus
TOSHIBA KK2 citations71
US6638421B2Oct 28, 2003
Water treatment control system using fluorescence analyzer
TOSHIBA KK8 citations71
US7820038B2Oct 26, 2010
Ultraviolet radiation water treatment system
TOSHIBA KK4 citations61
US7740753B2Jun 22, 2010
Ultraviolet radiation water treatment system
TOSHIBA KK5 citations61
US7014752B2Mar 21, 2006
Water treatment control system for minimizing trihalomethane formation
TOSHIBA KK1 citations49
US10112125B2Oct 30, 2018
Treatment method for used ion exchange resin
TOSHIBA KK0 citations48
US9932250B2Apr 3, 2018
Membrane filtration system
TOSHIBA KK0 citations36