Inventor

Hiroyuki Takazawa

Inventor

Hino, JP

Overview

1996–2013

Patent span

Electricity

Primary field (CPC H)

Patents· 15 as inventor

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

H10Dprimary

H10DInorganic electric semiconductor devices61%

H03FAmplifiers17%

B82YSpecific uses or applications of nanostructures4%

G01RMeasuring electric variables4%

G11BInformation storage based on relative movement between record carrier and transducer4%

H10NElectric solid-state devices not otherwise provided for4%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%

PatentTitleYear

8,537,505'Magnetoresistive effect head having a free layer and a magnetic domain control layer that applies a magnetic field more strongly in an upper part of the free layer'2013 8,385,847'Switching element, antenna switch circuit and radio frequency module using the same'2013 8,169,008'Semiconductor device'2012 7,899,412'Switching element, antenna switch circuit and radio frequency module using the same'2011 7,838,914'Semiconductor device'2010 7,783,265'Switching element, antenna switch circuit and radio frequency module using the same'2010 7,768,066'Semiconductor device and electrical circuit device using thereof'2010 7,307,298'Semiconductor device'2007 6,787,817'Compound semiconductor having a doped layer between the gate and an ohmic contact of an active region'2004 6,724,020'Semiconductor device and power amplifier using the same'2004 6,576,937'Semiconductor device and power amplifier using the same'2003 6,528,378'Semiconductor device'2003 6,392,258'High speed heterojunction bipolar transistor, and RF power amplifier and mobile communication system using the same'2002 5,739,559'Compound semiconductor integrated circuit with a particular high resistance layer'1998 5,523,593'Compound semiconductor integrated circuit and optical regenerative repeater using the same'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2010Patents assigned to HITACHI LTD (6)· patent assignee history

1996–2013Based in Hino, JP· patent location history

2002–2003Patents assigned to HITACHI ULSI SYS CO LTD (2)· patent assignee history

2004–2010Patents assigned to RENESAS TECH CORP (4)· patent assignee history

2010–2013Patents assigned to RENESAS ELECTRONICS CORP (3)· patent assignee history

2012–2013Patents assigned to TAKAZAWA HIROYUKI (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	6	1996–2010
RENESAS TECH CORP	4	2004–2010
RENESAS ELECTRONICS CORP	3	2010–2013
TAKAZAWA HIROYUKIself	3	2012–2013
HITACHI ULSI SYS CO LTD	2	2002–2003

Locations

Location	Patents	Span
Hino, JP	15	1996–2013