WESTECH ENGINEERING, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 12122
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 649
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
B28B SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER 127
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
C12M APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY 148
 
  
 
F17B GAS-HOLDERS OF VARIABLE CAPACITY 11
 
  
 
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
9878930 Systems and methods for installing digester ballastOct 07, 14Jan 30, 18[B23P, F17B, C12M, C02F]
9758404 Methods and apparatuses for adjustable air capture and releaseSep 26, 14Sep 12, 17[B01F, C02F]
9506850 Apparatus and method for determining one or more characteristics of a viscous materialMay 05, 14Nov 29, 16[G01N]
8182701 Method of optimizing feed distribution in a sedimentation vesselDec 08, 09May 22, 12[B01D]
8123955 Method of optimizing feed concentration in a sedimentation vesselNov 05, 09Feb 28, 12[B01D]
8101072 Phosphorous removal systemNov 05, 09Jan 24, 12[C02F]
8017018 Phosphorus removal methodNov 05, 09Sep 13, 11[C02F]
7670486 Phosphorus removal system and processJul 05, 06Mar 02, 10[C02F]
7192521 Filter having a media retaining plateDec 08, 05Mar 20, 07[B01D]
7014783 Flow splitting weirNov 17, 04Mar 21, 06[B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8551330 Carbon retention screen with variable discharge headExpiredJun 23, 10Oct 08, 13[B01D]
2011/0253,613 CONTAMINANT REMOVAL SYSTEM UTILIZING DISC FILTERAbandonedApr 29, 11Oct 20, 11[C02F]
2010/0264,083 METHOD AND APPARATUS FOR TREATING WASTE ACTIVATED SLUDGEAbandonedApr 21, 09Oct 21, 10[C02F]
2009/0145,846 FLUIDIZED BED APPARATUS AND METHOD FOR REMOVING SOLUBLE AND PARTICULATE MATTER FROM A LIQUIDAbandonedDec 06, 07Jun 11, 09[B01D]
7063787 Filter media retaining cap and hold down gridExpiredJun 05, 02Jun 20, 06[]
6800209 Energy dissipating inlet for clarifier feedwellsExpiredJul 30, 02Oct 05, 04[B01D]
5976370 Underdrain structure for media filtersExpiredJul 07, 97Nov 02, 99[B01D]
5376280 Flocculation control system and methodExpiredOct 25, 93Dec 27, 94[C02F, B01D]
4442001 Rotary vacuum filterExpiredSep 27, 82Apr 10, 84[B01D]

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