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Inventor

Katsunori Murozaki

Inventor
Chiba, JP

Overview

10→
Patents
1999–2019
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.

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers83%
H04BTransmission8%
H04MTelephonic communication8%
PatentTitleYear
10,321,216Wearable device20199,516,402'Earpiece and electro-acoustic transducer with protrusions and/or grooved passages'20168,983,110'Headphone device'20158,767,997'Headphone device'20148,270,648'Earpiece and electro-acoustic transducer'20128,208,676'Earpiece and earphone'20127,120,268'Headphone'20066,970,572'Headphone device'20056,560,346'Pipe microphone device'20035,949,896'Earphone'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2019Patents assigned to SONY CORP (10)· patent assignee history
1999–2019Based in Chiba, JP· patent location history
2012–2014Patents assigned to MUROZAKI KATSUNORI (3)· patent assignee history
2012Patents assigned to ICHIMURA KIMINOBU (1)· patent assignee history
2012Patents assigned to NAGENO KOJI (1)· patent assignee history
2014Patents assigned to FUJIWARA KEITARO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP101999–2019
MUROZAKI KATSUNORIself32012–2014
FUJIWARA KEITARO12014
ICHIMURA KIMINOBU12012
NAGENO KOJI12012
Locations
LocationPatentsSpan
Chiba, JP101999–2019