Inventor

Masateru Watanabe

Inventor

Chigasaki, JP

Overview

8→

Patents

1988–2018

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

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

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer38%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%

C08LCompositions of macromolecular compounds8%

G02BOptical elements, systems or apparatus8%

G06KGraphical data reading8%

H01LSemiconductor devices8%

H01QAntennas, i.e. radio aerials8%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation8%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%

PatentTitleYear

10,020,568RFID inlet antenna and RFID employing same2018 9,362,434'Back side protective sheet for solar cell and solar cell module comprising the same'2016 6,320,836'Apparatus for ensuring operational clearance between a rotating disc type medium and a disc cartridge enclosing the medium'2001 5,418,763'Disc recording system'1995 5,172,362'Recording medium loading mechanism'1992 5,016,237'Prism optics stable with respect to wavelength and temperature variations and optical information processing apparatus'1991 4,807,212'Correcting for comatic aberration in an optical head of an optical disk apparatus'1989 4,742,218'Focus error detection apparatus utilizing focusing an front and rear sides of focal planes'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2001Patents assigned to HITACHI LTD (5)· patent assignee history

1988–1991Based in Kanagawa, JP· patent location history

1989–2001Based in Chigasaki, JP· patent location history

2016–2018Patents assigned to TOYO ALUMINIUM KK (2)· patent assignee history

2016–2018Patents assigned to WATANABE MASATERU (2)· patent assignee history

2016–2018Based in Osaka, JP· patent location history

2018Patents assigned to DEN KENGO (1)· patent assignee history

2018Patents assigned to HIGASHIYAMA HIROKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	5	1988–2001
TOYO ALUMINIUM KK	2	2016–2018
WATANABE MASATERUself	2	2016–2018
DEN KENGO	1	2018
HIGASHIYAMA HIROKI	1	2018

Locations

Location	Patents	Span
Chigasaki, JP	4	1989–2001
Osaka, JP	2	2016–2018
Kanagawa, JP	2	1988–1991