Hampton Roads Sanitation District

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 748
 
  
 
B01D SEPARATION 2132
 
  
 
E03B INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER 112
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9902635 Method for deammonification process control using pH, specific conductivity, or ammoniaJul 22, 15Feb 27, 18[C02F]
9469558 Method and apparatus for maximizing nitrogen removal from wastewaterOct 01, 13Oct 18, 16[C02F]
9352990 Method and apparatus for maximizing nitrogen removal from wastewaterMar 14, 14May 31, 16[C02F]
9346694 Method and apparatus for nitrogen removal in wastewater treatmentSep 13, 13May 24, 16[C02F]
9340439 Method and apparatus for nitrogen removal in wastewater treatmentSep 13, 13May 17, 16[C02F]
9242882 Method and apparatus for wastewater treatment using gravimetric selectionNov 27, 13Jan 26, 16[C02F, B01D]
9068335 Valve operating nut protectorDec 07, 11Jun 30, 15[E03B, E03F]
6925895 Sample collection systemJul 02, 02Aug 09, 05[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4867883 High-rate biological waste water treatment process using activated sludge recycleExpiredJun 13, 88Sep 19, 89[C02F]

Top Inventors for This Owner

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