Inventor

Masuyoshi Yachida

Inventor

Kanagawa, JP

Overview

1998–2020

Patent span

Physics

Primary field (CPC G)

Patents· 15 as inventor

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

G06Fprimary

G06FElectric digital data processing35%

H04LTransmission of digital information, e.g. telegraphic communication25%

G11CStatic stores15%

G11BInformation storage based on relative movement between record carrier and transducer10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

H04NPictorial communication, e.g. television5%

PatentTitleYear

10,541,817Data generation apparatus, data recording system, and program product2020 10,348,507Data processing system, data processing apparatus, and data processing method2019 8,134,761'Document processing apparatus, method thereof, and program product for executing the method'2012 7,881,467'Image forming apparatus and electronizing method for information mentioned in paper'2011 7,814,325'System, method and computer readable medium for certifying release of electronic information on an internet'2010 7,774,605'Digital measurement apparatus and image measurement apparatus'2010 7,152,095'Method and apparatus for erasing data after tampering'2006 7,143,144'System, method and computer readable medium for certifying release of electronic information on an internet'2006 6,889,324'Digital measurement apparatus and image measurement apparatus'2005 6,874,092'Method and apparatus for erasing data after tampering'2005 6,304,948'Method and apparatus for erasing data after expiration'2001 6,301,670'Method and apparatus for erasing data when a problem is identified'2001 5,835,465'Magneto-optic disk drive controlling apparatus'1998 5,802,591'Method and system for preventing unauthorized access to information stored in a computer'1998 5,742,574'Magneto-optic disk drive controlling apparatus'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2010Patents assigned to RICOH KK (10)· patent assignee history

1998–2010Based in Yokohama, JP· patent location history

2001–2005Patents assigned to RICOH CORP (3)· patent assignee history

2005–2020Based in Kanagawa, JP· patent location history

2011–2020Patents assigned to RICOH CO LTD (4)· patent assignee history

2012–2020Patents assigned to YACHIDA MASUYOSHI (3)· patent assignee history

2019–2020Patents assigned to KOBAYASHI HIROSHI (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	10	1998–2010
RICOH CO LTD	4	2011–2020
RICOH CORP	3	2001–2005
YACHIDA MASUYOSHIself	3	2012–2020
KOBAYASHI HIROSHI	2	2019–2020

Locations

Location	Patents	Span
Kanagawa, JP	8	2005–2020
Yokohama, JP	7	1998–2010