Inventor

Sadao Osawa

Inventor

Shizuoka, JP

Overview

1977–2019

Patent span

Physics

Primary field (CPC G)

Patents· 35 as inventor

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

G03Gprimary

G03GElectrography50%

B41CProcesses for the manufacture or reproduction of printing surfaces11%

C09DCoating compositions, e.g. paints, varnishes or lacquers11%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

B41MPrinting, duplicating, marking, or copying processes2%

B41NPrinting plates or foils2%

B60LPropulsion of electrically-propelled vehicles2%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes2%

H02JElectric power networks2%

PatentTitleYear

10,176,539Power supply system2019 6,539,866'Process for preparing ink jet system printing plate'2003 6,532,870'Process for preparing ink-jet system printing plate'2003 6,197,847'Oil-based ink for preparing printing plate by ink jet process and method for preparing printing plate by ink jet process'2001 6,184,267'Oil-based ink for preparing printing plate by ink jet process and method for preparing printing plate by ink jet process'2001 6,152,037'Method of lithographic printing'2000 6,143,806'Oil-based ink for preparing printing plate by ink jet process and method for preparing printing plate by ink jet process'2000 6,140,389'Oil-based ink for printing plate by ink jet process and method for preparing printing plate by ink jet process'2000 6,136,889'Oil-based ink for preparing printing plate by ink jet process and method for preparing printing plate by ink jet process'2000 6,120,655'Process for producing printing plate for platemaking by ink-jet system'2000 6,080,449'Oil-based ink for preparing printing plate by ink jet process and method for preparing printing plate by ink jet process'2000 6,004,716'Method of forming an electrophotographic transfer image'1999 5,800,954'Method of forming color images and apparatus used therefor'1998 5,747,214'Method of forming an electrophotographic color transfer image and apparatus used therefor'1998 5,714,289'Method of preparation of electrophotographic printing plate'1998 5,689,785'Color image forming method and apparatus used therefor'1997 5,670,283'Electrophotographic material for color proofing'1997 5,648,190'Method of forming color images and apparatus used therefor'1997 5,626,996'Electrophotographic material for color proofing'1997 5,620,822'Method for preparation of printing plate by electrophotographic process'1997 5,582,943'Method of forming an electrophotographic color transfer image and electrophotographic light-sensitive material for use therein'1996 5,582,941'Color image forming method'1996 5,501,929'Method for preparation of printing plate by electrophotographic process'1996 5,395,721'Electrophotographic material for color proofing'1995 5,391,445'Electrophotographic material for color proofing'1995 5,079,116'Electrophotographic type printing plate precursor'1992 5,073,464'Method of processing electrophotographic lithographic printing plate precursors'1991 5,051,327'Method for oil-densensitization treatment of lithographic printing plate'1991 4,579,591'Desensitizing solution for use in offset printing'1986 4,357,404'Process for forming a lithographic printing plate by electrophotography'1982 4,120,805'Electrophotograhic liquid developer containing negatively charged toner'1978 4,063,946'Electrophotographic color reproduction process employing photoconductive material with dual light fatigue properties'1977 4,062,789'Liquid developer for electrophotography'1977 4,033,890'Liquid developer for electrophotography'1977 4,019,993'Manufacturing process for liquid developer'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2003Patents assigned to FUJI PHOTO FILM CO LTD (33)· patent assignee history

1977Patents assigned to RANK XEROX LTD (1)· patent assignee history

1977–1982Based in Asaka, JP· patent location history

1977–2019Based in Tokyo, JP· patent location history

1986Patents assigned to TOMOEGAWA PAPER CO LTD (1)· patent assignee history

1986–2003Based in Shizuoka, JP· patent location history

1995Based in Haibara, JP· patent location history

2000Based in Shizouka, JP· patent location history

2019Patents assigned to SOFTBANK CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJI PHOTO FILM CO LTD	33	1977–2003
RANK XEROX LTD	1	1977
SOFTBANK CORP	1	2019
TOMOEGAWA PAPER CO LTD	1	1986

Locations

Location	Patents	Span
Shizuoka, JP	26	1986–2003
Asaka, JP	4	1977–1982
Tokyo, JP	2	1977–2019
Shizouka, JP	1	2000
Haibara, JP	1	1995