Inventor

Yasunori Kobori

Inventor

Yokohama, JP

Overview

24→

Patents

1981–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 24 as inventor

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

H04Nprimary

H04NPictorial communication, e.g. television32%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters19%

G11BInformation storage based on relative movement between record carrier and transducer13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

H03HImpedance networks, e.g. resonant circuits6%

B41JTypewriters3%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems3%

H03DDemodulation or transference of modulation from one carrier to another3%

H03FAmplifiers3%

H03KPulse technique3%

PatentTitleYear

8,164,316'DC/DC converter'2012 5,251,074'Method and apparatus for controlling a video signal print system'1993 5,146,323'Signal processing circuit including a white balance adjusting circuit in a color video printer apparatus'1992 5,109,281'Video printer with separately stored digital signals printed in separate areas to form a print of multiple images'1992 5,045,951'Video signal processor and video signal processing method for a video printer'1991 5,028,993'Video printer having data are stored in main and sub memories are read out in synchronism thereby generating a synthesized picture data'1991 4,855,840'Control circuit for video printer'1989 4,844,770'Thermal-transfer recording apparatus'1989 4,734,759'A video printer having color signal interpolation circuit'1988 4,704,618'Signal-processing circuit for heat-sensitive recording apparatus'1987 4,703,366'Video image printer for printing an image derived from a video signal'1987 4,651,067'Apparatus for driving brushless motor'1987 4,613,914'Auto-tracking method and apparatus of a magnetic recording/reproducing apparatus'1986 4,605,901'Frequency-voltage converter'1986 4,591,798'FM signal demodulation circuit'1986 4,590,438'Bipolar transistor circuit with FET constant current source'1986 4,543,516'Speed and phase control system'1985 4,521,750'Characteristic switching circuit'1985 4,518,901'Motor control apparatus'1985 4,503,369'Power supply for plural brushless DC motors'1985 4,494,056'Motor driving circuit'1985 4,460,953'Signal voltage dividing circuit'1984 4,301,395'Phase-lock control device'1981 4,268,873'Servo circuit for rotary heads of a video tape recorder'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1993Patents assigned to HITACHI LTD (22)· patent assignee history

1981–1993Based in Yokohama, JP· patent location history

1981–1986Based in Katsuta, JP· patent location history

1984–1986Patents assigned to HITACHI MICROCUMPUTER ENG (4)· patent assignee history

1986Patents assigned to ENGINEERING LTD (1)· patent assignee history

1987–1992Patents assigned to HITACHI VIDEO ENG (2)· patent assignee history

2012Patents assigned to FURUYA TETSUYA (1)· patent assignee history

2012Based in Gunma, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	22	1981–1993
HITACHI MICROCUMPUTER ENG	4	1984–1986
HITACHI VIDEO ENG	2	1987–1992
ENGINEERING LTD	1	1986
FURUYA TETSUYA	1	2012

Locations

Location	Patents	Span
Yokohama, JP	14	1981–1993
Katsuta, JP	9	1981–1986
Gunma, JP	1	2012