Hydrotreat, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 3131
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7993051 Methods and apparatus for enhancing venturi suction in eductor mixersJul 09, 10Aug 09, 11[B01F]
7776213 Apparatus for enhancing venturi suction in eductor mixersNov 01, 04Aug 17, 10[B01D]
5647977 Method and apparatus for removing contaminants from industrial waste waterDec 05, 94Jul 15, 97[C02F]
5124043 Method for treating fluidsMay 20, 91Jun 23, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7537696 Method and apparatus for treatment of wastewater employing membrane bioreactorsExpiredSep 17, 07May 26, 09[B01D]
7285212 Method and apparatus for treatment of wastewater employing membrane bioreactorsExpiredSep 03, 04Oct 23, 07[B01D]
7243721 Methods and apparatus for heating oil production reservoirsExpiredOct 25, 04Jul 17, 07[E21B]
7232524 Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas driveExpiredSep 03, 04Jun 19, 07[F04B]
6962654 Methods and apparatus for supplying high concentrations of dissolved oxygen and ozone for chemical and biological processesExpiredDec 11, 02Nov 08, 05[B01D]
6960294 Apparatus for the separation of solids from liquids by dissolved gas floatationExpiredDec 11, 02Nov 01, 05[B03D]
6875351 Methods and apparatus for oil demulsification and separation of oil and suspended solids from produced waterExpiredDec 11, 02Apr 05, 05[C02F, B01D]
6811690 Method and apparatus for mixing fluids, separating fluids, and separating solids from fluidsExpiredNov 18, 03Nov 02, 04[B01F, B01D]
6811699 Method and apparatus for mixing fluids, separating fluids, and separating solids from fluidsExpiredOct 01, 03Nov 02, 04[B01D]
6811709 Method and apparatus for mixing fluids, separating fluids, and separating solids from fluidsExpiredNov 18, 03Nov 02, 04[B01F, B01D]
6811713 Method and apparatus for mixing fluids, separating fluids, and separating solids from fluidsExpiredNov 14, 03Nov 02, 04[B01D]
6808693 Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas driveExpiredDec 11, 02Oct 26, 04[C09K, E21B]
6805806 Method and apparatus for treatment of wastewater employing membrane bioreactorsExpiredDec 11, 02Oct 19, 04[B03D]
6797179 Method for removing dissolved metals from wastewater by electrocoagulationExpiredMay 02, 03Sep 28, 04[C02F]
6669843 Apparatus for mixing fluidsExpiredJun 12, 01Dec 30, 03[B01F, B01D]
6582592 Apparatus for removing dissolved metals from wastewater by electrocoagulationExpiredJun 12, 01Jun 24, 03[C02F]
6254267 Method and apparatus for mixing dry powder into liquidsExpiredNov 05, 98Jul 03, 01[B01F]
6228257 Apparatus for contacting fluids and solidsExpiredAug 23, 91May 08, 01[B01J]
5038830 Pipe and sealing deviceExpiredAug 19, 88Aug 13, 91[F16L]
5006243 Filter bag securing ringExpiredAug 24, 89Apr 09, 91[B01D]

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