Inventor

Tatsuya Tomura

Inventor

Tokyo, JP

Overview

1997–2021

Patent span

Physics

Primary field (CPC G)

Patents· 34 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 transducer37%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

Y10TTechnical subjects covered by former us classification12%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments11%

C09DCoating compositions, e.g. paints, varnishes or lacquers8%

B41MPrinting, duplicating, marking, or copying processes4%

B41JTypewriters3%

B82YSpecific uses or applications of nanostructures3%

C07DHeterocyclic compounds3%

A61KPreparations for medical, dental or toiletry purposes1%

PatentTitleYear

11,041,082Image forming method, image forming device, and recorded matter2021 10,703,911Organic colorant, coloring composition, and inkjet ink2020 10,655,029Inkjet ink and coloring composition2020 10,300,706Ink including silver particle and water, inkjet printing device including ink, and inkjet printing method using ink2019 10,293,627Printed matter, printing method, and printing device2019 10,202,516Printed matter, printer, and printing method2019 8,207,330'Two-photon absorption material and application thereof'2012 8,192,917'Material for multiphoton fluorescence microscope and multiphoton fluorescence microscope'2012 7,755,995'Recording and reproducing method for dye-based recordable DVD medium and apparatus for the same'2010 7,646,692'Apparatus for recording dye based recordable DVD media and process for recording the same'2010 7,532,556'Optical recording medium, recording and reproducing method, and recording and reproducing apparatus using heating pulses which are high-output at leading and trailing ends'2009 7,480,223'Recording and reading method and device for dye based write-once DVD medium'2009 7,457,216'Method for recording/reproducing dye-based recordable DVD medium and apparatus thereof'2008 7,449,279'Optical information recording medium'2008 7,439,008'Optical recording medium, and, method and apparatus for optical recording and reproducing using optical recording medium'2008 7,385,899'Recording and reproducing method for dye based recordable optical recording medium and apparatus using the same'2008 7,061,847'Optical recording method and apparatus for an optical storage medium'2006 6,936,323'Optical recording medium, and method and device using the same'2005 6,794,005'Optical recording medium, optical recording method and optical recording device'2004 6,762,008'Optical recording medium'2004 6,741,547'Optical recording medium having short wobble period length'2004 6,737,143'Optical recording medium, optical recording method and optical recording device'2004 6,660,867'Metal complex type squarylium compounds and optical recording media made by using the same'2003 6,628,595'Optical recording method and apparatus for an optical storage medium'2003 6,599,605'Squarylium compounds and optical recording media using the same'2003 6,596,364'Squarylium compounds and optical recording medium containing the same'2003 6,558,768'Optical recording medium and optical recording and reading method using the same'2003 6,225,022'Optical recording medium and recording method using the same'2001 6,197,477'Optical recording medium'2001 6,057,020'Optical recording medium and recording and/or reproduction method using the same'2000 5,998,093'Optical information recording medium'1999 5,939,163'Optical information recording medium'1999 5,863,703'Optical information recording medium using a phthalocyanine compound'1999 5,677,025'Optical information recording medium near infrared absorbing material therefor'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2010Patents assigned to RICOH KK (26)· patent assignee history

1997–1999Based in Yokohama, JP· patent location history

2000–2021Based in Tokyo, JP· patent location history

2003–2004Patents assigned to KYOWA HAKKO KOGYO KK (6)· patent assignee history

2003–2004Patents assigned to KYOWA YUKA KK (6)· patent assignee history

2012–2021Patents assigned to RICOH CO LTD (8)· patent assignee history

2012–2021Patents assigned to TOMURA TATSUYA (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	26	1997–2010
RICOH CO LTD	8	2012–2021
TOMURA TATSUYAself	8	2012–2021
KYOWA HAKKO KOGYO KK	6	2003–2004
KYOWA YUKA KK	6	2003–2004

Locations

Location	Patents	Span
Tokyo, JP	30	2000–2021
Yokohama, JP	4	1997–1999