Inventor

Hiroshi Yusa

Inventor

Yokohama, JP

Overview

1990–2007

Patent span

Physics

Primary field (CPC G)

Patents· 36 as inventor

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

G03Gprimary

G03GElectrography80%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds4%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties4%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

7,267,919'Toner'2007 7,097,951'Toner'2006 7,001,703'Toner'2006 6,881,527'Toner, and process cartridge'2005 6,875,549'Dry toner, toner production process, image forming method and process cartridge'2005 6,485,875'Toner and resin composition for the toner'2002 6,300,024'Toner, two-component type developer, heat fixing method, image forming method and apparatus unit'2001 6,214,509'Toner and image forming method'2001 6,033,817'Toner for developing electrostatic image and image forming method'2000 6,002,895'Process cartridge'1999 5,912,101'Toner for forming an image, image forming method and heat-fixing method'1999 5,840,457'Magnetic black toner and multi-color or full-color image forming method'1998 5,802,428'Images forming apparatus and developer for developing electrostatic images'1998 5,736,288'Toner for developing electrostatic images, process cartridge, and image forming method'1998 5,700,616'Developer for developing an electrostatic image and image forming method'1997 5,663,026'Magnetic toner, process cartridge and image forming method'1997 5,534,981'Image forming apparatus and developer for developing electrostatic images'1996 5,510,223'Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus'1996 5,464,722'Production of toner for developing electrostatic images'1995 5,447,815'Developer for developing electrostatic image and image forming method'1995 5,424,810'Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus'1995 5,422,707'Toner for developing electrostatic images, detachable apparatus, image forming apparatus and facsimile apparatus'1995 5,392,103'Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus'1995 5,338,638'Toner for developing electrostatic image and process for production thereof'1994 5,319,424'Developer for developing electrostatic image, image forming method, electrophotographic apparatus, apparatus unit, and facsimile apparatus'1994 5,307,122'Image forming apparatus apparatus unit facsimile apparatus and developer comprising hydrophobic silica fine powder for developing electrostatic images'1994 5,270,770'Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus'1993 5,270,143'Developer for developing electrostatic image, image forming method, electrophotographic apparatus, apparatus unit, and facsimile apparatus'1993 5,262,267'Magnetic developer, image forming method and image forming apparatus'1993 5,217,836'Toner for developing electrostatic images'1993 5,215,845'Image forming method and image forming apparatus'1993 5,210,617'Developer for developing electrostatic images and image forming apparatus'1993 5,180,649'Toner having crosslinkages and method of fixing same'1993 5,139,914'Developer for developing electrostatic images and image forming apparatus'1992 5,137,796'Magnetic developer, comprising spherical particles magnetic'1992 4,904,562'Process for producing encapsulated toner'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2007Patents assigned to CANON KK (36)· patent assignee history

1990–1996Based in Yokohama, JP· patent location history

1993Based in Kanagawa, JP· patent location history

1995–2002Based in Machida, JP· patent location history

2005–2007Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	36	1990–2007

Locations

Location	Patents	Span
Yokohama, JP	17	1990–1996
Machida, JP	13	1995–2002
Tokyo, JP	5	2005–2007
Kanagawa, JP	1	1993