Inventor

Sumio Hosaka

Inventor

Nishitama-gun, JP

Overview

1977–2012

Patent span

Physics

Primary field (CPC G)

Patents· 67 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 transducer16%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

B82YSpecific uses or applications of nanostructures14%

G01QScanning-probe techniques or apparatus11%

H04NPictorial communication, e.g. television7%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices6%

H01JElectric discharge tubes or discharge lamps4%

Y10TTechnical subjects covered by former us classification4%

G11CStatic stores3%

H10NElectric solid-state devices not otherwise provided for3%

PatentTitleYear

8,120,007'Phase-change memory device, phase-change channel transistor and memory cell array'2012 7,932,508'Multi-value recording phase-change memory device, multi-value recording phase-change channel transistor, and memory cell array'2011 7,897,958'Phase-change memory device, phase-change channel transistor, and memory cell array'2011 7,781,753'Multi-value recording phase-change memory device, multi-value recording phase-change channel transistor, and memory cell array'2010 7,241,994'Scanning probe microscope and specimen surface structure measuring method'2007 6,944,117'Information recording medium and information recording device'2005 6,844,092'Optically functional element and production method and application therefor'2005 6,839,142'Laser interferometer displacement measuring system, exposure apparatus, and electron beam lithography apparatus'2005 6,790,502'Optically functional element and production method and application therefor'2004 6,768,556'Near-field optical probe, near-field optical microscope and optical recording/reproducing device with near-field optical probe'2004 6,749,955'Information recording media and information recording drive'2004 6,746,749'Magnetic recording disk'2004 6,700,852'Information recording medium with recording film with cobalt oxide crystalline particles, and information recording device including the same'2004 6,687,013'Laser interferometer displacement measuring system, exposure apparatus, and electron beam lithography apparatus'2004 6,534,206'Information recording media and information recording drive'2003 6,472,047'Magnetic recording disk'2002 6,410,133'Magnetic recording disk, method of the magnetic recording disk and magnetic recording apparatus'2002 6,370,107'Recording medium and recording device'2002 6,304,527'Near-field optical head and manufacturing method thereof and optical recording/readout system using near-field optical head'2001 6,246,652'Device using sensor for small rotation angle'2001 6,049,654'Recording medium playing apparatus for reproducing same time information group'2000 5,965,881'Scanning probe microscope and processing apparatus'1999 5,895,876'Sound reproducing apparatus which utilizes data stored on a recording medium to make the apparatus more user friendly and a recording medium used in the apparatus'1999 5,808,977'Tracking method and recording means thereby'1998 5,796,706'Information recording apparatus'1998 5,679,911'Karaoke reproducing apparatus which utilizes data stored on a recording medium to make the apparatus more user friendly'1997 5,627,815'Precision machining method precision machining apparatus and data storage apparatus using the same'1997 5,615,192'Information recording and reproducing method and apparatus'1997 5,572,333'Compressed data recording method using integral logical block size and physical block size ratios'1996 5,537,409'Synchronizing system for time-divided video and audio signals'1996 5,473,106'Karaoke reproducing apparatus'1995 5,471,064'Precision machining method, precision machining apparatus and data storage apparatus using the same'1995 5,467,642'Scanning probe microscope and method of control error correction'1995 5,466,883'Karaoke reproducing apparatus'1995 5,436,448'Surface observing apparatus and method'1995 5,431,055'Surface measuring apparatus using a probe microscope'1995 5,282,186'Method and apparatus for recording and reproducing picture information and recording medium'1994 5,256,876'Scanning tunnel microscope equipped with scanning electron microscope'1993 5,229,607'Combination apparatus having a scanning electron microscope therein'1993 5,222,396'Tunnelling acoustic microscope'1993 5,162,653'Scanning tunneling microscope and surface topographic observation method'1992 5,144,128'Surface microscope and surface microscopy'1992 5,065,252'Method and apparatus for recording and reproducing picture information enabling the mixing of images of a video format signal and graphic codes recorded on a single recording medium'1991 5,063,551'Method and apparatus of recording and reproducing picture information and recording medium'1991 5,043,826'Method and apparatus for recording and reproducing picture information and timely reproducing images by graphic codes'1991 5,036,196'Surface microscope'1991 5,010,417'Playback method for use in a recording medium playing apparatus using information control signals'1991 5,001,409'Surface metrological apparatus'1991 4,937,668'Method and apparatus for transmitting video information'1990 4,920,424'Method of recording and reproducing multi-channel information on and from recording medium'1990 4,912,351'Piezoelectric motor'1990 4,883,959'Scanning surface microscope using a micro-balance device for holding a probe-tip'1989 4,841,191'Piezoelectric actuator control apparatus'1989 4,835,399'Charged particle beam apparatus'1989 4,786,922'Electron beam recording and reproducing apparatus'1988 4,772,817'Cathode mounting a high-frequency piezoelectric chip'1988 4,727,432'A VDP timing signal generator producing clock signals in phase with produced video sync signals and displaying the inphase condition'1988 4,703,369'Video format signal recording and reproducing method'1987 4,688,107'Information recording and regenerating system'1987 4,614,432'Pattern detector'1986 4,597,669'Pattern detector'1986 4,504,726'Pattern generator'1985 4,480,910'Pattern forming apparatus'1984 4,477,183'Automatic focusing apparatus'1984 4,455,485'Laser beam scanning system'1984 4,441,206'Pattern detecting apparatus'1984 4,057,347'Optical exposure apparatus'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2005Patents assigned to HITACHI LTD (44)· patent assignee history

1984–2005Based in Nishitama-gun, JP· patent location history

1986–1999Based in Tokyo, JP· patent location history

1987–2000Patents assigned to PIONEER ELECTRONIC CORP (17)· patent assignee history

1990–2000Based in Tokorozawa, JP· patent location history

1993–1999Patents assigned to HITACHI CONSTRUCTION MACHINERY (3)· patent assignee history

1993–2005Based in Hinode, JP· patent location history

2002–2004Patents assigned to HITACHI MAXELL (4)· patent assignee history

2010–2012Patents assigned to SEMICONDUCTOR TECH ACAD RES CT (4)· patent assignee history

2010–2012Based in Takasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	44	1977–2005
PIONEER ELECTRONIC CORP	17	1987–2000
HITACHI MAXELL	4	2002–2004
SEMICONDUCTOR TECH ACAD RES CT	4	2010–2012
HITACHI CONSTRUCTION MACHINERY	3	1993–1999

Locations

Location	Patents	Span
Nishitama-gun, JP	14	1984–2005
Hinode, JP	14	1993–2005
Tokorozawa, JP	14	1990–2000
Tokyo, JP	12	1986–1999
Takasaki, JP	4	2010–2012