Inventor

Masaaki Tojo

Inventor

Nara, JP

Overview

12→

Patents

1994–2005

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus33%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light7%

B28BShaping clay or other ceramic compositions3%

B29CShaping or joining of plastics3%

B29LIndexing scheme associated with subclass b29c, relating to particular articles3%

C03BManufacture, shaping, or supplementary processes3%

G01RMeasuring electric variables3%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy3%

PatentTitleYear

6,947,645'Optical package substrate and optical device'2005 6,904,190'Optical package substrate, optical device, optical module, and method for molding optical package substrate'2005 6,771,491'Battery pack'2004 6,766,660'Molding die and manufacturing method of molded product'2004 5,689,360'Polarization independent optical isolator'1997 5,689,359'Polarization independent optical isolator'1997 5,574,595'Optical isolator'1996 5,537,503'Optical semiconductor module and method of fabricating the same'1996 5,499,132'Optical passive components'1996 5,493,440'Optical isolator and optical fiber amplifier'1996 5,355,249'Optical passive components'1994 5,299,056'Optical passive component assembly'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2005Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (12)· patent assignee history

1994–1997Based in Nara, JP· patent location history

2004Based in Hirakata, JP· patent location history

2004Based in Nishikamo-gun, JP· patent location history

2005Based in Kitakatsuragi-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	12	1994–2005

Locations

Location	Patents	Span
Nara, JP	8	1994–1997
Kitakatsuragi-gun, JP	2	2005
Hirakata, JP	1	2004
Nishikamo-gun, JP	1	2004