Inventor

Akira Urano

Inventor

Yokohama, JP

Overview

23→

Patents

1990–2004

Patent span

Chemistry

Primary field (CPC C)

Patents· 23 as inventor

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

C03Bprimary

C03BManufacture, shaping, or supplementary processes31%

G02BOptical elements, systems or apparatus18%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%

C03CChemical composition of glasses, glazes or vitreous enamels15%

Y02PClimate change mitigation technologies in the production or processing of goods7%

C23CCoating metallic material3%

H10NElectric solid-state devices not otherwise provided for3%

H01JElectric discharge tubes or discharge lamps2%

H05HPlasma technique2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

6,709,997'Silica glass article and manufacturing process therefor'2004 6,563,989'Optical fiber coupler and optical fiber for optical fiber coupler'2003 6,535,679'Optical fiber and method of manufacturing the same'2003 6,360,046'Dispersion-shifted optical fiber'2002 6,333,283'Silica glass article and manufacturing process therefor'2001 6,275,638'Dispersion-shifted fiber'2001 5,983,673'Silica glass article and manufacturing process therefor'1999 5,660,611'Method for producing glass thin film'1997 5,556,442'Method for fabricating an optical waveguide'1996 5,551,966'Optical waveguide and method of fabricating the same'1996 5,503,650'Method for producing a glass thin film with controlloing an oxide vapor of an additive'1996 5,422,975'Optical filter doped with rare earth elements and used with optical fibers'1995 5,385,594'Method for fabricating an optical waveguide'1995 5,364,428'Method for producing glass preform for optical fiber'1994 5,217,516'Method of making optical glass article'1993 5,215,565'Method for making superconductor filaments'1993 5,203,899'Method for producing glass preform for optical fiber'1993 5,158,587'Method for producing glass preform for optical fiber'1992 5,145,507'Method for producing glass preform for optical fiber'1992 5,053,068'High pressure fluorine method for producing preform for optical fiber'1991 5,022,904'Method of making optical glass article'1991 4,968,662'Method of the production of ceramic superconductor filaments'1990 4,900,894'Method of heating a quartz glass tube'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2004Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (23)· patent assignee history

1990–2004Based in Yokohama, JP· patent location history

1990–1993Based in Kanagawa, JP· patent location history

1995Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history

1995Based in Yokoyama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SUMITOMO ELECTRIC INDUSTRIES	23	1990–2004
NIPPON TELEGRAPH & TELEPHONE	1	1995

Locations

Location	Patents	Span
Yokohama, JP	20	1990–2004
Kanagawa, JP	2	1990–1993
Yokoyama, JP	1	1995