HD Technologies Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 134
 
  
 
G21K TECHNIQUES FOR HANDLING PARTICLES OR ELECTROMAGNETIC RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA- OR X-RAY MICROSCOPES 145

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5316629 Process for maintaining electrolyte flow rate through a microporous diaphragm during electrochemical production of hydrogen peroxideSep 20, 91May 31, 94[C25B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7555098 Method and apparatus for X-ray fluorescence analysis and detectionExpiredJun 25, 07Jun 30, 09[G21K]
5244547 Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutionsExpiredJun 18, 91Sep 14, 93[C25B]
5106464 Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutionsExpiredApr 16, 90Apr 21, 92[C25B]
4969981 Cell and method of operating a liquid-gas electrochemical cellExpiredAug 25, 89Nov 13, 90[C25B]
4927509 Bipolar electrolyzerExpiredJun 04, 86May 22, 90[C25B]
4921587 Porous diaphragm for electrochemical cellExpiredMar 21, 89May 01, 90[C25B]
4891107 Porous diaphragm for electrochemical cellExpiredSep 19, 85Jan 02, 90[C25B]
4872957 Electrochemical cell having dual purpose electrodeExpiredJul 20, 88Oct 10, 89[C25B]
4631200 Graphite composite chipsExpiredMay 17, 85Dec 23, 86[B05D]

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