Tosoh Quartz Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C03B MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL 344
 
  
 
C03C CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS258
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7305852 Method for manufacturing quartz glass ingotMay 23, 01Dec 11, 07[C03B]
7084084 Highly durable silica glass, process for producing same, member comprised thereof, and apparatus provided therewithMar 10, 03Aug 01, 06[B01J]
7064094 Highly durable silica glass, process and apparatus for producing same, and member and apparatus provided with sameNov 24, 03Jun 20, 06[C03C]
6405563 Opaque silica glass article having transparent portion and process for producing sameAug 31, 01Jun 18, 02[C03B]
6312775 Opaque silica glass article having transparent portion and process for producing sameOct 16, 98Nov 06, 01[B32B]
5665133 Process for production of pure transparent quartzOct 10, 95Sep 09, 97[C03C, C03B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6705935 Abrasive molding and abrasive disc provided with sameExpiredNov 30, 01Mar 16, 04[B24B, B24D]
2003/0040,423 Higly durable silica glass, process and apparatus for producing same, and member and apparatus provided with sameAbandonedMar 26, 02Feb 27, 03[C03C]

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