Assignee
HYDROCHEM IND SERVICES INC
US·11 granted patents·530 citations·filing 1993–2001
Top patents by PatentIndex Score
11 records- 0196US6478033B1Methods for foam cleaning combustion turbinesHYDROCHEM IND SERVICES INC·Filed 2000·Granted Nov 12, 2002·99 cites·33 claims
- 0296US5970574AApparatus and method for cleaning surfaces by removing and containing wasteHYDROCHEM IND SERVICES INC·Filed 1997·Granted Oct 26, 1999·113 cites·12 claims
- 0395US6521028B1Low hazard corrosion inhibitors and cleaning solutions using quaternary ammonium saltsHYDROCHEM IND SERVICES INC·Filed 2000·Granted Feb 18, 2003·47 cites·25 claims
- 0494US6491048B1Manifold for use in cleaning combustion turbinesHYDROCHEM IND SERVICES INC·Filed 2000·Granted Dec 10, 2002·84 cites·20 claims
- 0591US6503334B2Forced mist cleaning of combustion turbinesHYDROCHEM IND SERVICES INC·Filed 2001·Granted Jan 7, 2003·90 cites·29 claims
- 0679USD422055SHigh pressure, water lance handleHYDROCHEM IND SERVICES INC·Filed 1999·Granted Mar 28, 2000·30 cites·1 claims
- 0776US6118000AMethods for preparing quaternary ammonium saltsHYDROCHEM IND SERVICES INC·Filed 1999·Granted Sep 12, 2000·24 cites·20 claims
- 0864US5529637AFormic-carboxylic acid mixtures for removing iron oxide sclae from steel surfacesHYDROCHEM IND SERVICES INC·Filed 1995·Granted Jun 25, 1996·15 cites·25 claims
- 0946US5419183AMethods and apparatus using a hydrocarbon gel to isolate mainline valves in a pipeline during a hydrotestHYDROCHEM IND SERVICES INC·Filed 1993·Granted May 30, 1995·19 cites·26 claims
- 1039US5679170AMethods for removing iron oxide scale from interior surfaces of steel vessels using formic acid-citric acid mixturesHYDROCHEM IND SERVICES INC·Filed 1995·Granted Oct 21, 1997·5 cites·21 claims
- 1132US5462671AMethod of removing heavy metals from solutions of amino-carboxylic acids for disposal purposesHYDROCHEM IND SERVICES INC·Filed 1994·Granted Oct 31, 1995·4 cites·20 claims
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