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Inventor

Hisayoshi Toratani

Inventor
Tokyo, JP

Overview

15→
Patents
1978–2001
Patent span
Chemistry
Primary field (CPC C)

Patents· 15 as inventor

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

C03Cprimary
C03CChemical composition of glasses, glazes or vitreous enamels35%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests19%
G11BInformation storage based on relative movement between record carrier and transducer13%
Y10TTechnical subjects covered by former us classification13%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light10%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%
C01GCompounds containing metals not covered by subclasses c01d or c01f3%
G02BOptical elements, systems or apparatus3%
PatentTitleYear
6,313,947'Light polarizing glass containing copper particles and process for preparation thereof'20016,214,429'Disc substrates for information recording discs and magnetic discs'20016,187,407'Glass substrate for magnetic recording medium and method of manufacturing the same'20016,066,359'Process for producing titanium oxide thin film, and photocatalyst'20006,063,470'Substrate for information recording media and magnetic disc'20005,981,015'Method for selecting a material suitable for a substrate for information recording media, material selected using this method, and magnetic disk formed using this material'19995,856,882'Optical fibers and optical fiber amplifiers'19995,764,661'Laser glasses and laser glass fibers'19985,246,892'Faraday rotation glass'19935,053,165'Glass of improved thermal shock resistance for high average power solid state laser system'19914,883,523'Avoidance of surface deterioration of glass during strengthening processes'19894,693,910'Process for producing porous antireflective coatings'19874,547,402'Method of increasing the thermal shock resistance of phosphate laser glass'19854,217,382'Edge-cladding glass of disc laser glass'19804,108,673'Optical phosphate glass in which the length of the light path is temperature independent'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2001Patents assigned to HOYA CORP (14)· patent assignee history
1978Based in Hidaka, JP· patent location history
1980Based in Hidakamachi, JP· patent location history
1985–2001Based in Tokyo, JP· patent location history
1989Patents assigned to RAYCHEM CORP (1)· patent assignee history
1989Based in Fremont, CA, US· patent location history
1991Patents assigned to HOYA OPTICS INC (1)· patent assignee history
2000Patents assigned to YAO TAKESHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HOYA CORP141978–2001
HOYA OPTICS INC11991
RAYCHEM CORP11989
YAO TAKESHI12000
Locations
LocationPatentsSpan
Tokyo, JP121985–2001
Fremont, California, US11989
Hidakamachi, JP11980
Hidaka, JP11978