Inventor

Fumio Murooka

Inventor

Atsugi, JP

Overview

19→

Patents

1991–2008

Patent span

Performing operations

Primary field (CPC B)

Patents· 19 as inventor

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

B41Jprimary

B41JTypewriters56%

G06FElectric digital data processing4%

G06KGraphical data reading4%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner4%

H03KPulse technique4%

H03MCoding4%

H04NPictorial communication, e.g. television4%

H05KPrinted circuits4%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%

PatentTitleYear

7,350,891'Liquid discharge head'2008 7,250,113'Method for manufacturing liquid ejection head'2007 6,520,611'Print head and printer apparatus using the same'2003 6,471,339'Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head'2002 6,467,884'Substrate unit for liquid discharging head, method for producing the same, liquid discharging head, cartridge, and image forming apparatus'2002 6,464,320'Recording head and recording apparatus using the same'2002 6,439,690'Element substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatus'2002 6,257,695'Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving record head'2001 6,243,109'Print head with driving, transmission and control devices on single substrate'2001 6,224,195'Recording head and recording apparatus using the same'2001 5,943,070'Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head'1999 5,880,762'Ink jet head with preliminary heater element'1999 5,877,784'Printhead, printing apparatus and printing method using printhead'1999 5,731,828'Ink jet head, ink jet head cartridge and ink jet apparatus'1998 5,614,439'Method of making a planar wiring in an insulated groove using alkylaluminum hydride'1997 5,602,576'Ink-jet type recording head and monolithic integrated circuit suitable therfor'1997 5,355,099'Signal generating device'1994 5,301,307'Microprocessor having waiting function'1994 4,982,192'Digital-to-analog converter having common adjustment means'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2008Patents assigned to CANON KK (18)· patent assignee history

1991–2007Based in Kanagawa, JP· patent location history

1994Patents assigned to SHARP KK (1)· patent assignee history

1994Based in Yamatokoriyama, JP· patent location history

1997–2008Based in Atsugi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	18	1991–2008
SHARP KK	1	1994

Locations

Location	Patents	Span
Atsugi, JP	15	1997–2008
Kanagawa, JP	3	1991–2007
Yamatokoriyama, JP	1	1994