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Inventor

Takashi Hamamoto

Inventor
Yokohama, JP

Overview

21→
Patents
1979–2006
Patent span
Physics
Primary field (CPC G)

Patents· 21 as inventor

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

Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B41MPrinting, duplicating, marking, or copying processes8%
G11BInformation storage based on relative movement between record carrier and transducer8%
Y10TTechnical subjects covered by former us classification8%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments6%
B01DSeparation4%
B82YSpecific uses or applications of nanostructures4%
D21HPulp compositions4%
G03CPhotosensitive materials for photographic purposes4%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%
PatentTitleYear
7,123,093'Semiconductor integrated circuit'20066,334,915'Copper alloy sheet for electronic parts'20025,623,476'Recording device and reproduction device'19975,498,932'Drive voltage generating circuit having a contrast control function'19965,359,204'Switching device'19945,140,398'Switching device'19924,957,061'Plurality of beam producing means disposed in different longitudinal and lateral directions from each other with respect to a substrate'19904,804,613'Optical recording medium and optical recording process using such medium'19894,802,989'System for purifying dye'19894,798,694'Method for producing composite materials'19894,766,047'Optical recording medium and optical recording process using such medium'19884,698,151'Dyestuff refining system'19874,664,815'Ink production system'19874,634,628'Recording medium and image recording process'19874,618,561'Monomolecular record memory medium with photosensitive diazonium salt'19864,592,980'Photoconductive layer having hydrophilic and hydrophobic moieties'19864,572,847'Process for recording with ink on a material comprising a substrate having thereon a coating layer with micro-cracks'19864,544,580'Method for recording by writing or printing with ink'19854,496,629'Material used to bear writing or printing'19854,481,244'Material used to bear writing or printing'19844,177,784'Engine starting device'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to TOYO KOGYO CO (1)· patent assignee history
1979Based in Hiroshima, JP· patent location history
1984–1997Patents assigned to CANON KK (17)· patent assignee history
1984–1997Based in Yokohama, JP· patent location history
1996–2006Patents assigned to OKI ELECTRIC IND CO LTD (2)· patent assignee history
1996Based in Tokyo, JP· patent location history
2002Patents assigned to KOBE STEEL LTD (1)· patent assignee history
2002Based in Shimonoseki, JP· patent location history
2006Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK171984–1997
OKI ELECTRIC IND CO LTD21996–2006
KOBE STEEL LTD12002
TOYO KOGYO CO11979
Locations
LocationPatentsSpan
Yokohama, JP171984–1997
Osaka, JP12006
Shimonoseki, JP12002
Tokyo, JP11996
Hiroshima, JP11979