Inventor

Norio Asakura

Inventor

Hamamatsu, JP

Overview

8→

Patents

1976–2001

Patent span

Electricity

Primary field (CPC H)

Patents· 8 as inventor

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

H01Jprimary

H01JElectric discharge tubes or discharge lamps73%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

Y10TTechnical subjects covered by former us classification9%

PatentTitleYear

6,198,221'Electron tube'2001 6,020,684'Electron tube with improved airtight seal between faceplate and side tube'2000 6,008,579'Electron tube with improved airtight seal between faceplate and side tube'1999 5,917,282'Electron tube with electron lens'1999 5,883,466'Electron tube'1999 5,471,051'Photocathode capable of detecting position of incident light in one or two dimensions, phototube, and photodetecting apparatus containing same'1995 5,336,902'Semiconductor photo-electron-emitting device'1994 3,988,497'Photocathode made of a semiconductor single crystal'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to HAMAMATSU TV CO LTD (1)· patent assignee history

1976–2001Based in Hamamatsu, JP· patent location history

1994–2001Patents assigned to HAMAMATSU PHOTONICS KK (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HAMAMATSU PHOTONICS KK	7	1994–2001
HAMAMATSU TV CO LTD	1	1976

Locations

Location	Patents	Span
Hamamatsu, JP	8	1976–2001