Assignee
CH2M HILL INC
US·43 granted patents·10 pending applications·1,032 citations·filing 1982–2017
Top patents by PatentIndex Score
53 records- 0197US6905600B2Method and apparatus for the treatment of particulate biodegradable organic wasteCH2M HILL INC·Filed 2002·Granted Jun 14, 2005·70 cites·31 claims
- 0295US7311834B2Apparatus for the treatment of particulate biodegradable organic wasteCH2M HILL INC·Filed 2006·Granted Dec 25, 2007·20 cites·4 claims
- 0395US6863818B2Method and apparatus for treating wastewater using membrane filtersCH2M HILL INC·Filed 2003·Granted Mar 8, 2005·108 cites·16 claims
- 0495US6517723B1Method and apparatus for treating wastewater using membrane filtersCH2M HILL INC·Filed 2000·Granted Feb 11, 2003·128 cites·2 claims
- 0590US7754090B1Portable ultraviolet water treatment apparatusCH2M HILL INC·Filed 2008·Granted Jul 13, 2010·23 cites·11 claims
- 0688US6946073B2Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluentCH2M HILL INC·Filed 2003·Granted Sep 20, 2005·95 cites·15 claims
- 0786US10324007B2Passive device for vapor intrusion samplingCH2M HILL INC·Filed 2017·Granted Jun 18, 2019·5 cites·20 claims
- 0886US6295823B1Apparatus and method for controlling temperature and humidity of a conditioned spaceCH2M HILL INC·Filed 2000·Granted Oct 2, 2001·85 cites·16 claims
- 0985US5480548AWastewater biological phosphorus removal processCH2M HILL INC·Filed 1993·Granted Jan 2, 1996·81 cites·10 claims
- 1081US7435340B2Wastewater treatment systemCH2M HILL INC·Filed 2007·Granted Oct 14, 2008·7 cites·24 claims
- 1180US7927493B2Low phosphorus water treatment methodsCH2M HILL INC·Filed 2008·Granted Apr 19, 2011·6 cites·18 claims
- 1280US7103479B2Method and system for evaluating water usageCH2M HILL INC·Filed 2005·Granted Sep 5, 2006·22 cites·23 claims
- 1380US6534306B1Modular biofilter unit and method of useCH2M HILL INC·Filed 2000·Granted Mar 18, 2003·22 cites·17 claims
- 1479US7968760B2Treatment of particulate biodegradable organic waste by thermal hydrolysis using condensate recycleCH2M HILL INC·Filed 2008·Granted Jun 28, 2011·6 cites·9 claims
- 1579US7171787B2Rectangular tilt-up concrete tank constructionCH2M HILL INC·Filed 2003·Granted Feb 6, 2007·38 cites·13 claims
- 1679US6728987B1Method of adjusting the vertical profile of a cable supported bridgeCH2M HILL INC·Filed 2002·Granted May 4, 2004·34 cites·30 claims
- 1778US4526463AApparatus for exposing photosensitive mediaCH2M HILL INC·Filed 1982·Granted Jul 2, 1985·19 cites·21 claims
- 1876US6982036B2Chemically enhanced primary sludge fermentation methodCH2M HILL INC·Filed 2004·Granted Jan 3, 2006·17 cites·18 claims
- 1976US6383803B1Portable compostion system with reconfigurable air flowCH2M HILL INC·Filed 2001·Granted May 7, 2002·17 cites·20 claims
- 2073US7138048B1Apparatus and method for the removal of solids and floatables from a wastewater streamCH2M HILL INC·Filed 2002·Granted Nov 21, 2006·31 cites·14 claims
- 2173US6893864B2Apparatus for aerating a particulate materialCH2M HILL INC·Filed 2002·Granted May 17, 2005·9 cites·12 claims
- 2272US7645092B2Treatment of in ground chromium ore processing residueCH2M HILL INC·Filed 2007·Granted Jan 12, 2010·5 cites·7 claims
- 2370US7062406B2Method and system for water quality tradingCH2M HILL INC·Filed 2003·Granted Jun 13, 2006·17 cites·29 claims
- 2469US6783681B2Method and apparatus for treatment of drinking waterCH2M HILL INC·Filed 2001·Granted Aug 31, 2004·16 cites·20 claims
- 2569US6723244B1Method and apparatus to achieve nitrification at low solids retention timesCH2M HILL INC·Filed 2001·Granted Apr 20, 2004·19 cites·17 claims
- 2666US7144510B2Method and apparatus for treatment of a fluid streamCH2M HILL INC·Filed 2005·Granted Dec 5, 2006·2 cites·6 claims
- 2766US7025884B2Method and apparatus for treatment of a fluid systemCH2M HILL INC·Filed 2003·Granted Apr 11, 2006·10 cites·9 claims
- 2863US6787041B2Carbon dioxide enhanced complex-adsorption process for metal or metalloid removal from waterCH2M HILL INC·Filed 2002·Granted Sep 7, 2004·12 cites·34 claims
- 2962US7446673B2Intelligent wireless multicast networkCH2M HILL INC·Filed 2003·Granted Nov 4, 2008·12 cites·15 claims
- 3059US7029201B1Utility line bedding for storm water management and storm water management system and methodCH2M HILL INC·Filed 2003·Granted Apr 18, 2006·16 cites·10 claims
- 3158US9885647B2Semi-dynamic leach test device and methods of making and usingCH2M HILL INC·Filed 2015·Granted Feb 6, 2018·1 cites·18 claims
- 3258US2009177458A1Systems and methods for solar mapping, determining a usable area for solar energy production and/or providing solar informationCH2M HILL INC·Filed 2008·Application pending·0 cites
- 3357US7537699B2Methods for reducing biosolids odorsCH2M HILL INC·Filed 2007·Granted May 26, 2009·1 cites·19 claims
- 3456US2005274668A1Method and apparatus for the treatment of particulate biodegradable organic wasteCH2M HILL INC·Filed 2005·Application pending·0 cites
- 3553US2007090050A1Method and apparatus for treatment of a fluid streamCH2M HILL INC·Filed 2006·Application pending·0 cites
- 3651US6352575B1Apparatus and method for centralized recovery of volatile organic compoundsCH2M HILL INC·Filed 2000·Granted Mar 5, 2002·8 cites·21 claims
- 3750US7745679B2Method of waste stabilization with dewatered chemically bonded phosphate ceramicsCH2M HILL INC·Filed 2004·Granted Jun 29, 2010·2 cites·29 claims
- 3850US4659462AApparatus for pretreatment of water using a bed of granular activated carbonCH2M HILL INC·Filed 1985·Granted Apr 21, 1987·18 cites·2 claims
- 3949US2010051110A1Gas actuated valveCH2M HILL INC·Filed 2009·Application pending·0 cites
- 4048US2009130013A1Methods and systems for enhancing mercury, selenium and heavy metal removal from flue gasCH2M HILL INC·Filed 2008·Application pending·0 cites
- 4146US2005209817A1Method and system for grading the internal condition of a pipeCH2M HILL INC·Filed 2004·Application pending·0 cites
- 4244US4707124AApparatus for exposing photosensitive mediaCH2M HILL INC·Filed 1985·Granted Nov 17, 1987·8 cites·17 claims
- 4344US2010301287A1Process for Treating Spent Nuclear FuelCH2M HILL INC·Filed 2006·Application pending·0 cites
- 4443US7068161B2Method and system for analyzing the security of a facilityCH2M HILL INC·Filed 2003·Granted Jun 27, 2006·8 cites·21 claims
- 4543US2005034075A1GIS-based emergency managementCH2M HILL INC·Filed 2003·Application pending·0 cites
- 4640US4999670APrinter with print media support systemCH2M HILL INC·Filed 1989·Granted Mar 12, 1991·3 cites·20 claims
- 4739US2005192472A1System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinanceCH2M HILL INC·Filed 2004·Application pending·0 cites
- 4836USH2198HMulti-stage pyrolysis systems for treating chlorine contaminated wastesCH2M HILL INC·Filed 2002·Granted Aug 7, 2007·2 cites·15 claims
- 4935US5701953AWell head for environmental extraction wellsCH2M HILL INC·Filed 1996·Granted Dec 30, 1997·20 cites·8 claims
- 5030USD754664SModular podCH2M HILL INC·Filed 2013·Granted Apr 26, 2016·3 cites·1 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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