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Inventor

Ryoichi Nakamura

Inventor
Tokyo, JP

Overview

10→
Patents
1993–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 10 as inventor

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

H10Bprimary
H10BElectronic memory devices28%
H10DInorganic electric semiconductor devices28%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1011%
B24BMachines, devices, or processes for grinding or polishing6%
B66CCranes6%
C30BSingle-crystal growth6%
G11BInformation storage based on relative movement between record carrier and transducer6%
G11CStatic stores6%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h106%
PatentTitleYear
10,988,355Mobile crane20219,469,916'Method of producing GaAs single crystal and GaAs single crystal wafer'20167,990,756'Semiconductor memory device and method for manufacturing same'20117,414,291'Semiconductor device and method of manufacturing the same'20087,057,243'Hybrid semiconductor device having an n+ (p) doped n-type gate and method of producing the same'20066,653,230'Semiconductor device having concave electrode and convex electrode and method of manufacturing thereof'20036,611,031'Semiconductor device and method for its manufacture'20036,597,033'Semiconductor memory device and manufacturing method thereof'20036,110,753'Semiconductor memory and manufacturing method of the semiconductor memory'20005,193,033'Magnetic recording and reproducing apparatus incorporating clogging detection'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993Based in Hyogo, JP· patent location history
2000–2003Patents assigned to NEC CORP (4)· patent assignee history
2000–2008Based in Tokyo, JP· patent location history
2003Patents assigned to NEC ELECTRONICS CORP (3)· patent assignee history
2006Patents assigned to HITACHI LTD (1)· patent assignee history
2008Patents assigned to ELPIDA MEMORY INC (1)· patent assignee history
2011Based in Kanagawa, JP· patent location history
2016Patents assigned to DOWA ELECTRONICS MATERIALS CO LTD (1)· patent assignee history
2016Based in Yurihonjo, JP· patent location history
2021Based in Nagano, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP42000–2003
NEC ELECTRONICS CORP32003
DOWA ELECTRONICS MATERIALS CO LTD12016
ELPIDA MEMORY INC12008
HITACHI LTD12006
Locations
LocationPatentsSpan
Tokyo, JP62000–2008
Nagano, JP12021
Yurihonjo, JP12016
Kanagawa, JP12011
Hyogo, JP11993