Inventor

Ryoichi Yamamoto

Inventor

Kanagawa, JP

Overview

1981–2020

Patent span

Performing operations

Primary field (CPC B)

Patents· 77 as inventor

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

B41Jprimary

B41JTypewriters13%

G11BInformation storage based on relative movement between record carrier and transducer11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

Y10TTechnical subjects covered by former us classification9%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

B41MPrinting, duplicating, marking, or copying processes4%

B01DSeparation3%

B05CApparatus for applying fluent materials to surfaces, in general3%

PatentTitleYear

10,682,864Ink-jet image forming device2020 9,011,404'Pull-on absorbent article and method of making the same'2015 8,152,164'Image forming apparatus'2012 7,988,227'Structure for fixing fender panel in car'2011 7,881,626'Image formation apparatus utilizing density of waste toner to detect amount thereof'2011 7,660,541'Image formation apparatus utilizing density of waste toner to detect amount thereof'2010 7,372,449'Display device, image display device and display method'2008 7,304,620'Image display apparatus and image display method'2007 7,207,660'Electrostatic ink jet head fixing a position of an edge portion of a meniscus of ink'2007 7,118,200'Inkjet printer head'2006 7,108,584'Method and apparatus for manufacturing liquid drop ejecting head'2006 7,070,262'Droplet ejecting head'2006 7,043,837'Method of manufacture of inkjet printer head'2006 6,981,760'Ink jet head and ink jet printer'2006 6,962,407'Inkjet recording head, method of manufacturing the same, and inkjet printer'2005 6,733,111'Inkjet head'2004 6,663,227'Semiconductor device and process for producing the same'2003 6,637,868'Inkjet head and method of manufacturing the same'2003 6,598,957'Recording head and process for producing the same'2003 6,595,622'Ink jet printhead with thick substrate providing reduced warpage'2003 6,582,054'Image forming apparatus'2003 6,561,608'Image forming method and apparatus'2003 6,517,178'Image forming method and apparatus'2003 6,517,181'Method and apparatus for forming image with feedback control of recording liquid'2003 6,467,893'Method and apparatus for forming image with plural coating liquids'2002 6,341,852'Method and apparatus for forming image with feedback control of recording liquid'2002 6,341,063'Installation structure of printed-circuit board for electronic control unit'2002 6,299,286'Method and apparatus for forming image with coating of recording liquid and undercoating liquid'2001 6,057,955'Optical modulator and drive method thereof'2000 6,046,837'Optical modulator'2000 5,999,246'Image recording apparatus with improved spatial light modulator'1999 5,990,272'Method of treating polyolefin'1999 5,981,042'Medium for recording information on ferroelectric material using polarization'1999 5,962,607'Method of vapor phase polymerization, vapor phase polymerizer and blower'1999 5,799,412'Drying solid polymer apparatus'1998 5,753,191'Gas distributor plate for a gas phase polymerization apparatus'1998 5,738,249'Quantitative powder feeder capable of feeding powder by fixed amounts'1998 5,684,522'Method of recording information on ferroelectric material using polarization'1997 5,676,847'Method for recovering crystals from slurry with wash water recycle means'1997 5,463,113'Process and apparatus for producing terephthalic acid'1995 5,418,029'Information recording medium and method'1995 5,371,729'Information recording method'1994 5,340,647'Optomagnetic recording medium'1994 5,267,447'Process and device for preventing the liquefaction-leakage phenomenon of gas in a pressure regulator'1993 5,145,548'Laminating device for use in laminating a continuous ID card material'1992 5,109,377'Magneto-optical recording medium and method of producing the same'1992 5,075,145'Optical recording medium'1991 5,055,353'Magneto-optical recording medium'1991 5,008,450'Process for exchanging dispersing medium of terephthalic acid slurry'1991 4,992,336'Magneto-optical recording medium'1991 4,975,339'Magneto-optical recording medium with at least one protective layer containing platinum and/or palladium'1990 4,945,661'Dredging apparatus'1990 4,929,320'Method of making magneto-optical recording medium'1990 4,897,320'Magneto-optical recording medium'1990 4,837,118'Magneto-optical recording medium'1989 4,808,456'Magneto-optical recording medium and method of making the same'1989 4,802,160'Optical disk substrate'1989 4,789,606'Magneto-optical recording medium'1988 4,735,698'Method of making magneto-optical recording medium'1988 4,692,501'Process for continuous multi-stage polymerization of olefins'1987 4,561,989'Heat storage material'1985 4,529,638'Thermal insulator'1985 4,525,547'Process for producing ethylene copolymer by gaseous phase copolymerization'1985 4,521,378'Fluid bed reactor system composed of cylindrical reaction vessel equipped with distribution plate and agitator'1985 4,497,724'Solar energy storage materials'1985 4,492,725'Composite thermal insulator'1985 4,449,516'Sunlight-energy-storing method'1984 4,446,410'Control circuit for a solenoid-operated actuator'1984 4,431,558'Heat accumulating material'1984 4,426,307'Heat accumulative material'1984 4,420,592'Process for multi-step gaseous phase polymerization of olefins'1983 4,406,804'Heat accumulating material'1983 4,381,245'Supercooling inhibitor and process for preparing the same'1983 4,366,123'Anchor agitator for gaseous phase polymerization vessel'1982 4,338,424'Multi-step gas-phase polymerization of olefins'1982 4,305,910'Catalytic reaction for reduction of nitrogen oxide'1981 4,243,636'Apparatus for the continuous liquid-phase catalytic oxidation of alkyl-substituted aromatic compounds'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1998Patents assigned to MITSUI PETROCHEMICAL IND (12)· patent assignee history

1981–1998Based in Yamaguchi, JP· patent location history

1982–1999Based in Kuga-gun, JP· patent location history

1983–1985Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (9)· patent assignee history

1983–1985Based in Neyagawa, JP· patent location history

1988–2007Patents assigned to FUJI PHOTO FILM CO LTD (39)· patent assignee history

1988–1992Based in Odawara, JP· patent location history

1991–2008Based in Kanagawa, JP· patent location history

1998–1999Patents assigned to MITSUI CHEMICALS INC (3)· patent assignee history

2010–2012Patents assigned to KONICA MINOLTA BUSINESS TECH (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJI PHOTO FILM CO LTD	39	1988–2007
MITSUI PETROCHEMICAL IND	12	1981–1998
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	9	1983–1985
KONICA MINOLTA BUSINESS TECH	3	2010–2012
MITSUI CHEMICALS INC	3	1998–1999

Locations

Location	Patents	Span
Kanagawa, JP	32	1991–2008
Odawara, JP	9	1988–1992
Neyagawa, JP	9	1983–1985
Yamaguchi, JP	8	1981–1998
Kuga-gun, JP	7	1982–1999