Inventor

Hitoshi Maruyama

Inventor

Kurashiki, JP

Overview

42→

Patents

1979–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 42 as inventor

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

C08Fprimary

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds9%

C08LCompositions of macromolecular compounds6%

G03GElectrography6%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

Y10TTechnical subjects covered by former us classification5%

C08JWorking-up4%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids4%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

D21HPulp compositions3%

PatentTitleYear

11,119,409Polysiloxane skeleton polymer, photosensitive resin composition, pattern forming process, and fabrication of opto-semiconductor device2021 10,982,053Polymer containing silphenylene and polyether structures2021 10,883,647Vacuum heat insulator and method of manufacturing the same2021 10,538,630Silicone-modified polybenzoxazole resin and making method2020 10,503,067Photosensitive resin composition, photosensitive dry film, photosensitive resin coating, and pattern forming process2019 10,451,970Silicone skeleton-containing polymer, photo-curable resin composition, photo-curable dry film, laminate, and patterning process2019 8,691,328'Process for production of aluminum complex comprising sintered porous aluminum body'2014 8,190,062'Image forming apparatus with an image carrier including a light emitting element layer'2012 8,180,270'Image forming apparatus for controlling glossiness of an image'2012 7,822,351'Filling-rate lowering and rolling rate adjusting image forming apparatus'2010 7,787,815'Image forming device'2010 7,751,746'Device for driving rotary body with mechanism for dampening fluctuation in rotation velocity'2010 7,738,813'Corona charger having two charging regions'2010 7,657,218'Gloss providing sheet and image formation apparatus'2010 7,551,868'Image forming apparatus and image forming method'2009 5,997,704'Sputtering target for depositing ferroelectric film, method for preparing the same, and method for preparing a DRAM using the same'1999 5,732,568'Refrigerating cycle'1998 5,599,870'Aqueous emulsion'1997 5,531,080'Refrigerant circulating system'1996 5,527,852'Paper coating agent'1996 5,517,824'Refrigerating cycle'1996 5,419,144'Refrigeration device using hydrofluorocarbon refrigerant'1995 5,420,180'Sized yarn and process therefor'1995 5,387,638'Emulsion composition'1995 5,355,695'Refrigeration device using hydrofluorocarbon refrigerant'1994 5,349,008'Process for suspension polymerization of vinyl compound'1994 5,338,331'Low-permeability high-strength target material for the formation of thin magnetooptical recording films'1994 5,331,055'Process for producing vinyl ester polymer and process for producing vinyl alcohol polymer'1994 5,308,911'Secondary suspending agent for suspension polymerization of vinyl compound'1994 5,308,910'Composition, adhesive and aqueous emulsion'1994 5,134,036'Ethylene-vinyl alcohol copolymers, moldings and laminates'1992 5,132,146'Method of aqueous ink printing on an ink absorbing layer being coated on a substrate'1992 5,102,950'Water soluble film'1992 5,034,451'Water-soluble binder and hot-melt binder for ceramics molding'1991 4,972,564'Apparatus for correcting surface imperfections on a surface of gear tooth'1990 4,708,947'Water resistant composition and heat-sensitive recording sheet containing the same'1987 4,620,872'Composite target material and process for producing the same'1986 4,617,239'Paper coating agent'1986 4,567,221'Water resistant compositions'1986 4,492,783'Binder for obtaining a ceramic molded green body'1985 4,269,729'Microencapsulation process and resulting microcapsules'1981 4,157,781'Self balancing centrifuge'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–2014Patents assigned to MARUYAMA HITOSHI (4)· patent assignee history

1981–1997Patents assigned to KURARAY CO (17)· patent assignee history

1981–1997Based in Kurashiki, JP· patent location history

1994–2021Patents assigned to MITSUBISHI ELECTRIC CORP (6)· patent assignee history

1994–1998Based in Shizuoka, JP· patent location history

1994–1999Based in Omiya, JP· patent location history

2009–2010Patents assigned to RICOH KK (6)· patent assignee history

2009–2012Based in Tokyo, JP· patent location history

2019–2021Patents assigned to SHINETSU CHEMICAL CO (5)· patent assignee history

2019–2021Based in Annaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KURARAY CO	17	1981–1997
MITSUBISHI ELECTRIC CORP	6	1994–2021
RICOH KK	6	2009–2010
SHINETSU CHEMICAL CO	5	2019–2021
MARUYAMA HITOSHIself	4	1979–2014

Locations

Location	Patents	Span
Kurashiki, JP	16	1981–1997
Tokyo, JP	8	2009–2012
Annaka, JP	5	2019–2021
Shizuoka, JP	5	1994–1998
Omiya, JP	2	1994–1999