Inventor

Tomozo Ohta

Inventor

Ikoma, JP

Overview

1985–2021

Patent span

Physics

Primary field (CPC G)

Patents· 20 as inventor

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

G01Sprimary

G01SRadio direction-finding16%

H03DDemodulation or transference of modulation from one carrier to another14%

G06KGraphical data reading11%

G07CTime or attendance registers9%

H03GControl of amplification7%

H04LTransmission of digital information, e.g. telegraphic communication7%

G06FElectric digital data processing5%

H01QAntennas, i.e. radio aerials5%

H03JTuning resonant circuits5%

H04NPictorial communication, e.g. television5%

PatentTitleYear

10,970,870Object detection apparatus2021 5,642,103'Transponder used in a remote identification system'1997 5,434,787'System for measuring position by using global positioning system and receiver for global position system'1995 5,346,300'Back fire helical antenna'1994 5,313,211'Portable data processing device capable of transmitting processed data on a radio by reflection of unmodulated carrier signal externally applied'1994 5,289,506'Automatic frequency control circuit'1994 5,278,514'MSK demodulator using one synchronous detector'1994 5,228,036'Frame synchronization stabilizer'1993 5,107,522'Automatic frequency control circuit'1992 5,025,261'Mobile object navigation system'1991 5,021,790'Microwave date transmission apparatus'1991 4,991,228'Microwave converter'1991 4,926,182'Microwave data transmission apparatus'1990 4,890,076'Reflection type SSB modulator'1989 4,712,111'Antenna system'1987 4,654,888'Image suppression mixer of the waveguide type'1987 4,594,556'Demodulation circuit from FM signals and demodulation system therefor'1986 4,563,651'FM Demodulator with variable bandpass filter'1986 4,531,148'High sensitivity FM signal demodulation system'1985 4,527,187'High sensitivity FM signal demodulation system'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1986Patents assigned to OKI ELECTRIC IND CO LTD (3)· patent assignee history

1985–1986Based in Tokyo, JP· patent location history

1986–1997Patents assigned to SHARP KK (16)· patent assignee history

1986–1997Based in Ikoma, JP· patent location history

1994Based in Nara, JP· patent location history

2021Patents assigned to TOYOTA MOTOR CO LTD (1)· patent assignee history

2021Based in Susono, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	16	1986–1997
OKI ELECTRIC IND CO LTD	3	1985–1986
TOYOTA MOTOR CO LTD	1	2021

Locations

Location	Patents	Span
Ikoma, JP	14	1986–1997
Tokyo, JP	3	1985–1986
Nara, JP	2	1994
Susono, JP	1	2021