| Patents for F17D 3 - Arrangements for supervising or controlling working operations (4,120) |
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| 11/06/1996 | CN2239566Y high peak pressure compensator of coal gas pressure regulator |
| 10/30/1996 | CN1134529A Low-pressure normal-temp. compound carbon-5 gas making and distributing system |
| 08/20/1996 | US5546976 Condensate trap installations |
| 07/17/1996 | EP0668941B1 Transport of solutions of cellulose through pipes |
| 06/25/1996 | US5529346 Joints |
| 06/13/1996 | DE19543473A1 Vorrichtung und Verfahren zum Entfernen von Ablagerungen bei der Erdöl- und Erdgasförderung Apparatus and method for removing deposits in the oil and gas production |
| 05/22/1996 | CN1123040A Transport of solutions of cellulose through pipes |
| 05/14/1996 | US5515715 Method and means for filtering contaminants from a gas stream to aid detection |
| 04/09/1996 | US5505496 Automatic pipeline switching device |
| 02/01/1996 | DE4425161A1 Natural gas line swabbing pig |
| 01/31/1996 | EP0694144A1 Method and means for addition of odour component to consumer gas |
| 01/31/1996 | CN2218868Y Coin-fee pipe gas controller |
| 01/31/1996 | CN1115839A Pipe fluid testing method and equipment |
| 01/10/1996 | CN2217165Y Device for cleaning and removing wax for petroleum conveyance pipe-line |
| 11/22/1995 | EP0682993A2 Liquid product distribution system |
| 11/08/1995 | EP0641406B1 Process plant |
| 10/26/1995 | DE4420246C1 Sampler valve for use with gases |
| 10/12/1995 | DE19508658A1 Control device for fluid sub-streams |
| 09/20/1995 | EP0672443A1 Control device for at least two partial fluid streams |
| 09/14/1995 | DE4408803C1 Polymer split fluid flow filter control unit |
| 09/06/1995 | EP0670037A1 Joints. |
| 08/30/1995 | EP0668941A1 Transport of solutions of cellulose through pipes. |
| 08/01/1995 | US5437299 Multiphase fluid flow splitting and measurement |
| 08/01/1995 | US5437180 Detection of natural gas within a customer's domain |
| 07/13/1995 | DE4423363A1 Condensate trap for steam pipeline |
| 06/01/1995 | DE3690098C2 Device for setting the flow rate of a gas |
| 05/24/1995 | EP0654438A1 Automatic pipeline switching device |
| 04/25/1995 | US5408868 Method and apparatus for obtaining on-line gas samples for the measurement of crude oil content |
| 04/08/1995 | CA2122326A1 Variable mass flow rate fluid dispensing control |
| 03/28/1995 | US5401304 Method for the manufacture of solvent-spun cellulose fibre involving transport of cellulose solution through pipes |
| 03/22/1995 | CN2192798Y Relay pot of liquefied gas pipe |
| 03/14/1995 | US5396923 Surge relief apparatus and method |
| 03/08/1995 | EP0591294B1 Gas and/or liquid tubular duct |
| 03/07/1995 | US5394755 Flow quantity test system for mass flow controller |
| 02/28/1995 | US5394339 Apparatus for analyzing oil well production fluid |
| 02/15/1995 | CN2189691Y Gasifier for liquified petroleum gas |
| 02/15/1995 | CN2189690Y Cold-delivery ball taking-in device for petroleum pipeline |
| 02/14/1995 | US5389155 Passing a cylinder made out of low density foamed polyurethane through pipeline, propelling cylinder by small pressure difference to push the condensate; good dimensional stability |
| 01/18/1995 | CN2187725Y Magnetic card lock for gas pipe line |
| 01/18/1995 | CN2187721Y Dirt-proof flow display device |
| 01/10/1995 | CA2028098C Apparatus for and method of managing liquid under pressure |
| 12/27/1994 | US5375634 Variable mass flow rate fluid dispensing control |
| 12/08/1994 | WO1994028213A1 Transport of solutions of cellulose through pipes |
| 12/08/1994 | CA2163269A1 Transport of solutions of cellulose through pipes |
| 12/06/1994 | US5370146 Sample valve |
| 12/01/1994 | DE4320748C1 Monitoring arrangement |
| 12/01/1994 | DE4317395A1 Method and device for supplying consumers with odorized gas |
| 11/30/1994 | CN1026761C Clock-type display for pipeline through ball indicator |
| 10/27/1994 | WO1994024480A1 Method and means for addition of odour component to consumer gas |
| 10/25/1994 | US5357995 Self-cleaning slurry metering valve |
| 10/11/1994 | US5354371 Transport of solutions of cellulose through pipes |
| 08/23/1994 | US5340467 From tar sand; slurrying with ethylene oxide alkylphenol adduct, aeration |
| 08/10/1994 | CN1090636A Semi-automatic stink adding method for burning gas and its special device |
| 07/21/1994 | DE4301174A1 Valve for sample extraction of liquids from pipeline |
| 07/20/1994 | CN1089724A Coupler |
| 07/06/1994 | EP0604530A1 Method and device for conveying a liquid and another free-flowing medium through the same pipe line |
| 06/01/1994 | CN2167259Y Monitoring device for supervising steam-trap working condition |
| 05/31/1994 | US5316664 Separation of sand from hydrocarbons using chemicals such as nonionic surfactants of ethoxylated alkylphenols and dialkylphenols |
| 05/26/1994 | WO1994011718A1 Joints |
| 05/25/1994 | CN2166303Y Dismountable electromagnetic flow transducer |
| 04/27/1994 | CN1024370C Cryogen delivery apparatus |
| 04/20/1994 | CN2162312Y Pipe cleaning apparatus for soft petroleum pipeline |
| 04/20/1994 | CN1024295C Delivery apparatus for liquid propellant gasification pipe line |
| 04/13/1994 | EP0591294A1 Gas and/or liquid tubular duct. |
| 04/13/1994 | EP0527177B1 Cleanable scraper station |
| 04/12/1994 | US5301536 Apparatus for obtaining on-line gas samples for the measurement of crude oil content |
| 03/23/1994 | CN2159491Y Unpowered self-trapping condensating apparatus for middle pressure gas fuel |
| 02/16/1994 | EP0582762A1 Process for preparing a water continuous emulsion from heavy crude fraction |
| 02/02/1994 | EP0581616A1 Liquid removal process in pipelines, using a moving piston |
| 02/01/1994 | US5283001 Process for preparing a water continuous emulsion from heavy crude fraction |
| 01/19/1994 | EP0578792A1 Apparatus for and method of removing liquids |
| 12/22/1993 | CN2150429Y Automatic recording system for pipeline gas |
| 12/16/1993 | DE4213876C1 Product-distributor with pipes accommodating go-devil - has stopcocks connecting pipes in first and second sets and second ones downstream through which go-devil can pass |
| 12/02/1993 | DE4316734A1 Sample-taking valve for removing liquid or flowable matter from vessel or pipeline - has displacement piston followed by blocking piston, forming intermediate space between pistons and causing delivery opening to close |
| 11/25/1993 | WO1993023621A1 Process plant |
| 11/25/1993 | DE4216697A1 Prozeßanlage Process plant |
| 11/24/1993 | CN2147415Y Multi-kind air source automatic distributing combined device |
| 11/23/1993 | US5263848 Removing contaminants from hydrocarbons |
| 11/09/1993 | US5260547 Autonomous container for the vacuum treatment of an object and its transfer lock |
| 10/28/1993 | DE4213022A1 Ball valve for pipeline or container sampling device - has bore in valve ball for receiving end of sampling piston which latch together using arcuate slit for opening of valve. |
| 10/19/1993 | US5254292 Device for regulating and reducing the fluctuations in a polyphasic flow, and its use |
| 10/19/1993 | CA1323312C Fluid flow apparatus control and monitoring |
| 10/13/1993 | EP0427798B1 Apparatus for and method of managing liquid under pressure |
| 09/22/1993 | CN2142526Y Water flow view-finder |
| 07/21/1993 | CN2138743Y Point valve box for oxygen |
| 07/21/1993 | CN1074522A Clock-type display for pipeline through ball indicator |
| 07/08/1993 | WO1993014388A1 Apparatus for and method of removing liquids |
| 07/08/1993 | CA2105383A1 Apparatus for and method of removing liquids |
| 06/22/1993 | CA1319277C Multi-phase petroleum monitoring system and method |
| 05/05/1993 | CN2132065Y Point valve box for acetylene |
| 04/01/1993 | WO1993006409A1 Method and device for conveying a liquid and another free-flowing medium through the same pipe line |
| 04/01/1993 | CA2118788A1 Method and apparatus for conveying a liquid and another fluent medium through the same pipeline |
| 03/30/1993 | US5198037 Method for unclogging a pipe carrying dangerous substances |
| 03/25/1993 | DE4131208A1 Verfahren und vorrichtung zum foerdern einer fluessigkeit und eines anderen fliessfaehigen mediums durch dieselbe foerderleitung Method and apparatus for conveying a fluessigkeit and another fliessfaehigen medium by the same foerderleitung |
| 03/16/1993 | US5193572 Pig-compatible three-way butterfly valve |
| 02/17/1993 | EP0527177A1 Cleanable scraper station. |
| 02/17/1993 | CN1069110A Liquid fuel gasification pipe conveying appliance |
| 01/12/1993 | CA1312525C Constant flow and constant pressure fluid regulator |
| 01/07/1993 | WO1993000547A1 Gas and/or liquid tubular duct |
| 01/05/1993 | US5175892 Fresh water control system and method |