Inventor

Tamotsu Sugawara

Inventor

Tokyo, JP

Overview

9→

Patents

1998–2009

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein41%

H01FMagnets23%

C30BSingle-crystal growth18%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light9%

C01BNon-metallic elements5%

G02BOptical elements, systems or apparatus5%

PatentTitleYear

7,517,406'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same and crucible for producing the same'2009 7,333,261'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same crucible for producing the same'2008 7,242,516'Hard magnetic garnet material, faraday rotator, optical device, optical communication system, method of manufacturing faraday rotator and method of manufacturing bismuth-substituted rare earth iron garnet single crystal'2007 7,187,496'Manufacturing method of optical device, optical device, manufacturing method of faraday rotator, and optical communication system'2007 7,133,189'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same and crucible for producing the same'2006 6,775,052'HARD MAGNETIC GARNET MATERIAL, FARADAY ROTATOR, OPTICAL DEVICE, OPTICAL COMMUNICATION SYSTEM, METHOD OF MANUFACTURING FARADAY ROTATOR AND METHOD OF MANUFACTURING BISMUTH-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL'2004 6,526,072'Wavelength conversion device composed of single-crystal lithium tetraborate, laser apparatus provided with the same and method of converting wavelength using the same'2003 6,391,229'Borate crystal, growth method of the same and laser equipment using the same'2002 5,805,626'Single-crystal lithium tetraborate and method making the same, optical converting method and converter device using the single-crystal lithium tetraborate, and optical apparatus using the optical converter device'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2003Patents assigned to MITSUBISHI MATERIALS CORP (3)· patent assignee history

1998Based in Saitama, JP· patent location history

2002–2003Based in Omiya, JP· patent location history

2004–2009Patents assigned to TDK CORP (6)· patent assignee history

2004–2009Based in Tokyo, JP· patent location history

2007Based in Chuo-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TDK CORP	6	2004–2009
MITSUBISHI MATERIALS CORP	3	1998–2003

Locations

Location	Patents	Span
Tokyo, JP	5	2004–2009
Omiya, JP	2	2002–2003
Chuo-ku, JP	1	2007
Saitama, JP	1	1998