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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →