Inventor

Masaaki Maeda

Inventor

Tokyo, JP

Overview

6→

Patents

2000–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 6 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication18%

E02FDredging9%

G02BOptical elements, systems or apparatus9%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them9%

G05BControl or regulating systems in general9%

H03KPulse technique9%

H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses9%

H04BTransmission9%

H04WWireless communication networks9%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation9%

PatentTitleYear

10,921,697Wavelength conversion element, phosphor wheel, light source device, and projection display apparatus2021 10,845,794State identification device, state identification method and mechanical device2020 7,558,584'Location reporting method and related mobile communication terminal'2009 6,680,988'Non-linear extraction circuit and clock extraction circuit'2004 6,157,022'Bias voltage control circuitry for avalanche photodiode taking account of temperature slope of breakdown voltage of the diode, and method of adjusting the same'2000 6,072,366'Receiver capable of outputting a high quality signal without regard to an input signal level'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2004Patents assigned to OKI ELECTRIC IND CO LTD (3)· patent assignee history

2000–2020Based in Tokyo, JP· patent location history

2009Patents assigned to NTT DOCOMO INC (1)· patent assignee history

2020Patents assigned to HITACHI LTD (1)· patent assignee history

2021Patents assigned to PANASONIC IP MAN CO LTD (1)· patent assignee history

2021Based in Nara, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
OKI ELECTRIC IND CO LTD	3	2000–2004
HITACHI LTD	1	2020
NTT DOCOMO INC	1	2009
PANASONIC IP MAN CO LTD	1	2021

Locations

Location	Patents	Span
Tokyo, JP	5	2000–2020
Nara, JP	1	2021