RDP COMPANY

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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 4130
 
  
 
C05D INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE19

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8133401 Method and apparatus for treating lime slurry for grit removalApr 14, 05Mar 13, 12[B01D]
7416673 Method and apparatus for treating lime slurry for grit removalMar 31, 06Aug 26, 08[B01D]
5851404 Process and apparatus for liquid sludge stabilizationJan 28, 97Dec 22, 98[C02F]
5783073 Process and apparatus for liquid sludge stabilizationJan 28, 97Jul 21, 98[C02F]
5681481 Process and apparatus for liquid sludge stabilizationMay 18, 95Oct 28, 97[C02F]
5618442 Process for treatment of sewage sludgeJun 11, 96Apr 08, 97[C05D]
5554279 Apparatus for treatment of sewage sludgeSep 26, 94Sep 10, 96[C02F]
5433844 Apparatus for pathogen reduction in wasteNov 11, 94Jul 18, 95[B01D]
5405536 Process and apparatus for pathogen reduction in wasteJul 28, 93Apr 11, 95[C02F]
5401402 Process and apparatus for treating sewage sludgeMar 30, 94Mar 28, 95[C02F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5013458 Process and apparatus for pathogen reduction in wasteExpiredApr 06, 90May 07, 91[C02F]

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