Inventor

Masamichi Tsukada

Inventor

Ibaraki, JP

Overview

1985–2002

Patent span

Physics

Primary field (CPC G)

Patents· 15 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Nprimary

G01NInvestigating or analysing materials by determining their chemical or physical properties47%

H01JElectric discharge tubes or discharge lamps35%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light18%

PatentTitleYear

6,423,965'Mass spectrometer'2002 6,248,998'Plasma ion source mass spectrometer'2001 5,793,039'Mass spectrometer, skimmer cone assembly, skimmer cone and its manufacturing method'1998 5,763,877'Analyzer using plasma and analysis method using plasma, interface used for the same and sample introducing component used for the same'1998 5,616,918'Plasma ion mass spectrometer and plasma mass spectrometry using the same'1997 5,283,624'Multi-element simultaneous analysis atomic absorption spectroscopy photometer and multi-element simultaneous analytic method'1994 5,202,562'High sensitive element analyzing method and apparatus of the same'1993 5,130,537'Plasma analyzer for trace element analysis'1992 5,108,178'Atomic absorption spectrophotometer and electromagnetic shut-off valve for use therein'1992 5,035,505'Atomic absorption spectroscopy photometer'1991 D0307398'Atomic absorption spectrophotometer'1990 4,890,919'Atomic absorption spectrophotometer'1990 4,867,562'Atomic absorption spectrophotometer'1989 4,840,484'Atomic absorption spectrophotometer with furnace at pressure equal or near light source pressure'1989 4,553,840'Double monochrometer'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2002Patents assigned to HITACHI LTD (15)· patent assignee history

1985–1994Based in Ibaraki, JP· patent location history

1992–1993Based in Minori, JP· patent location history

1997Based in Higashi, JP· patent location history

1998–2002Based in Higashi-Ibaraki-gun, JP· patent location history

1998Based in Suwa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	15	1985–2002

Locations

Location	Patents	Span
Ibaraki, JP	7	1985–1994
Higashi-Ibaraki-gun, JP	3	1998–2002
Minori, JP	2	1992–1993
Suwa, JP	1	1998
Higashi, JP	1	1997