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Inventor

Kenji Kawahata

Inventor
Saitama, JP

Overview

7→
Patents
2004–2013
Patent span
Electricity
Primary field (CPC H)

Patents· 7 as inventor

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

H03Bprimary
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner71%
H01PWaveguides29%
PatentTitleYear
8,547,183'Voltage controlled oscillator'20138,289,093'Voltage controlled oscillator'20128,283,989'Voltage controlled oscillator'20127,538,628'Harmonic oscillator using transmission line resonator'20097,479,856'High-frequency filter using coplanar line resonator'20097,471,165'High-frequency balun'20086,771,137'High-frequency oscillator'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2013Patents assigned to NIHON DEMPA KOGYO CO (7)· patent assignee history
2004–2009Based in Saitama, JP· patent location history
2012–2013Patents assigned to HOSHIGAMI HIROSHI (3)· patent assignee history
2012–2013Patents assigned to KAWAHATA KENJI (3)· patent assignee history
2012–2013Patents assigned to ONZUKA TATSUNORI (3)· patent assignee history
2012–2013Patents assigned to TSUDA TOSHIMASA (3)· patent assignee history
2012–2013Based in Sayama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIHON DEMPA KOGYO CO72004–2013
HOSHIGAMI HIROSHI32012–2013
KAWAHATA KENJIself32012–2013
ONZUKA TATSUNORI32012–2013
TSUDA TOSHIMASA32012–2013
Locations
LocationPatentsSpan
Saitama, JP42004–2009
Sayama, JP32012–2013