Inventor

Masayoshi Nagata

Inventor

Kanagawa, JP

Overview

31→

Patents

1976–2012

Patent span

Physics

Primary field (CPC G)

Patents· 31 as inventor

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

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer20%

G03GElectrography19%

G03CPhotosensitive materials for photographic purposes9%

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

C07CAcyclic or carbocyclic compounds6%

C01BNon-metallic elements4%

C07DHeterocyclic compounds4%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%

Y02PClimate change mitigation technologies in the production or processing of goods4%

Y10TTechnical subjects covered by former us classification4%

PatentTitleYear

8,097,231'Method and system for producing activated carbon'2012 8,038,976'Method and system for producing activated carbon'2011 7,663,998'Information reproduction device and read clock monitoring method'2010 7,440,376'Operation condition setting system'2008 7,430,157'Recording device, recording method, reproducing device, and reproducing method'2008 7,221,633'Disk data reproduction device using NRZI modulated data'2007 6,909,681'Optical disk and optical disk apparatus'2005 6,909,683'Optical disc and optical disc drive apparatus'2005 6,906,990'Phase-change optical disk and optical disk apparatus'2005 6,809,998'Optical disk drive and method for processing data using the same'2004 6,716,508'Optical recording medium'2004 6,587,415'Drive unit having blank/written area identification capability'2003 6,487,144'DISK RECORDING MEDIUM INCLUDING DATA PRE-FORMATTED-DATA-RECORDED HEADER HAVING FIRST AND SECOND IDENTICAL ADDRESS NUMBERS RADIALLY DISPLACED FROM EACH OTHER ON OPPOSITE SIDES OF GROOVE OR LAND TRACK CENTER LINE, AND DISK DRIVE UNIT FOR USE WITH THE RECORDING MEDIUM'2002 6,196,484'Photographic 120-size film roll'2001 5,573,129'Collapsible container for a liquid'1996 4,594,303'Electrophotographic photoreceptor'1986 4,500,622'Electrophotographic light-sensitive printing materials'1985 4,477,550'Electrophotographic photoreceptor with hydrazone'1984 4,469,768'Electrophotographic light-sensitive material comprising a charge-generating material and a charge-transporting material'1984 4,421,838'Processes for preparing photoconductive elements and electrophotosensitive materials'1983 4,403,025'Electrophotographic photoreceptor'1983 4,396,694'Organic electrophotographic sensitive materials'1983 4,395,473'Electrophotographic sensitive materials containing barbituric acid or thiobarbituric acid derivaties'1983 4,349,617'Function separated type electrophotographic light-sensitive members and process for production thereof'1982 4,254,214'Photographic materials for non-silver images and process for forming non-silver images'1981 4,245,027'Light-sensitive image recording material and dry process for recording light image using the same'1981 4,172,180'Heat sensitive color forming and heat sensitive electrical conductivity increasing composition and heat sensitive image recording sheet using the same'1979 4,076,530'Dry photographic copying method for producing Te images'1978 4,062,685'Non-silver halide light-sensitive material sensitized by colloidal elements'1977 3,992,208'Photo-sensitive etchant and method for forming metal image using same'1976 3,960,559'Method of making a semiconductor device utilizing a light-sensitive etching agent'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to FUJI PHOTO FILM CO LTD (18)· patent assignee history

1976–1983Based in Asaka, JP· patent location history

1979–2001Based in Minami-ashigara, JP· patent location history

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

1984–2012Based in Kanagawa, JP· patent location history

2002–2010Patents assigned to SONY CORP (11)· patent assignee history

2008–2010Based in Tokyo, JP· patent location history

2011–2012Patents assigned to FUJIFILM CORP (2)· patent assignee history

2012Patents assigned to HARA YOSHIO (1)· patent assignee history

2012Patents assigned to ISHIBASHI NOBORU (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJI PHOTO FILM CO LTD	18	1976–2001
SONY CORP	11	2002–2010
FUJIFILM CORP	2	2011–2012
HARA YOSHIO	1	2012
ISHIBASHI NOBORU	1	2012

Locations

Location	Patents	Span
Kanagawa, JP	13	1984–2012
Asaka, JP	10	1976–1983
Tokyo, JP	3	2008–2010
Saitama, JP	3	1983–1985
Minami-ashigara, JP	2	1979–2001