Inventor

Itaru Yokohama

Inventor

Isehara, JP

Overview

5→

Patents

1989–2003

Patent span

Physics

Primary field (CPC G)

Patents· 5 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus27%

B82YSpecific uses or applications of nanostructures9%

C07BGeneral methods of organic chemistry9%

C07DHeterocyclic compounds9%

C30BSingle-crystal growth9%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%

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

H04BTransmission9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

PatentTitleYear

6,643,439'Photonic crystal waveguide'2003 5,981,756'Deuterated 2-adamantylamino-5-nitropyridine, organic nonlinear optical material containing the compound, and production method of the compound'1999 5,851,284'Process for producing garnet single crystal'1998 5,025,448'Method and apparatus for stabilizing frequency of semiconductor laser'1991 4,869,570'Fiber coupler and method and apparatus for manufacturing the same'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2003Patents assigned to NIPPON TELEGRAPH & TELEPHONE (5)· patent assignee history

1989Based in Kanagawa, JP· patent location history

1991Based in Zama, JP· patent location history

1998–2003Based in Isehara, JP· patent location history

1999Based in Mito, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON TELEGRAPH & TELEPHONE	5	1989–2003

Locations

Location	Patents	Span
Isehara, JP	2	1998–2003
Mito, JP	1	1999
Zama, JP	1	1991
Kanagawa, JP	1	1989