| Patents for F17D 3 - Arrangements for supervising or controlling working operations (4,120) |
|---|
| 12/30/1992 | EP0520852A1 3-Way butterfly valve for a pig pipeline |
| 12/29/1992 | CA1311987C Fresh water control system and method |
| 11/25/1992 | EP0514730A1 Automatically configurable, piggable pipework system |
| 11/11/1992 | CN1019043B Lubrication device for gas supply pipe-line in factory |
| 11/04/1992 | CN2120951U Safety air-pressure petroleum device |
| 10/21/1992 | CN2119561U High-and medium-pressure one-and two-stage condenser for cleaning fuel gas pipeline |
| 10/19/1992 | CA2066312A1 Process for preparing a water continuous emulsion from heavy crude fraction |
| 10/07/1992 | CN2118231U Fluoroplastics-lining pipeline supervising mirror |
| 09/29/1992 | US5150741 Device for controlling the gas stream delivered by a pressurized gas reservoir and a gas supply system comprising such a device |
| 09/16/1992 | EP0504053A1 Autonomous container for treating an object under vacuum and transfer lock |
| 07/29/1992 | CN2111430U Cooling and lubricating liquid flow signel alarm |
| 07/22/1992 | EP0495159A2 Pipe-line adapted for a go-devil |
| 07/21/1992 | US5131819 Apparatus for and method of managing liquid under pressure |
| 07/01/1992 | CN2108847U Automatic pressure-stabilizing and igniting device of gas calorific value apparatus |
| 06/11/1992 | DE4038376A1 Safety device for coupled sections of pressurised pipeline - comprises cover for coupling bolts which is movable between locked and working positions according to pressure |
| 05/20/1992 | CN2104987U Automatic draining sewage safety watertight device |
| 05/19/1992 | US5113895 Three way valve and distribution pipe comprising same, both adapted to be cleaned by scraping |
| 05/19/1992 | US5113655 Apparatus and method for removing liquid condensate from a compressed-air system |
| 05/07/1992 | DE4034700A1 Dual valve release system diverting medium from conducting system - supplies delivery element which can be applied in sealed condition and released when escape system is closed |
| 04/08/1992 | CN2101168U Pass ball indicator with timing transporting function |
| 04/07/1992 | US5101636 Cryogen delivery apparatus and method for regulating the cooling potential of a flowing cryogen |
| 04/01/1992 | CN2100554U Microcomputer-controlled acid conveying device |
| 03/10/1992 | CA1297167C Valving technique |
| 02/12/1992 | EP0371976B1 A method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons |
| 11/27/1991 | CN1014924B Gas delivery system |
| 11/21/1991 | EP0457682A1 Method of unblocking a pipe carrying dangerous products |
| 11/20/1991 | CN2089117U Level type electric controlling automatic drainage by compression air |
| 11/14/1991 | WO1991017386A1 Cleanable scraper station |
| 11/07/1991 | DE4031789A1 Pig for cleaning pipeline - is driven along pipeline by pressure medium |
| 10/29/1991 | US5062068 Computerized analyzing system for piping network |
| 10/22/1991 | CA1291002C Preparation of stable crude oil transport emulsions |
| 10/02/1991 | CN1055045A Cryogen delivery apparatus |
| 10/01/1991 | CA1289942C Conduit carried fluid homogenization device |
| 09/25/1991 | EP0448229A1 Cryogen delivery apparatus |
| 09/25/1991 | CN1014087B Dewatering and antifreezing apparatus and method for gas with natural freeze |
| 09/21/1991 | CA2037548A1 Cryogen delivery apparatus |
| 08/21/1991 | CN2083265U Domestic fuel gas filter |
| 08/14/1991 | DE4003864A1 Stopcock with spherical plug - has plug with hole through it, two sealing rings, and housing with two connecting pipes |
| 07/30/1991 | US5035256 Two-way valve for fitting to the downstream end of a fluid distribution pipe adapted to be cleaned by scraping |
| 07/30/1991 | US5035021 Scraper for liquid distribution pipes, especially for petroleum products |
| 07/03/1991 | EP0435711A1 Device for controlling the gas stream delivered by a container for pressure gas and gas feed system comfusing such a device |
| 05/22/1991 | EP0427798A1 Apparatus for and method of managing liquid under pressure. |
| 05/15/1991 | CN1051418A Electro-mechanically integrated oil delivery pump station installation of petroleum pipeline |
| 04/30/1991 | US5010913 Fluid bleed apparatus |
| 03/19/1991 | US5000872 Surfactant requirements for the low-shear formation of water continuous emulsions from heavy crude oil |
| 02/27/1991 | EP0413788A1 Device for regulating and reducing a polyphasic flow, and its use |
| 02/26/1991 | US4995425 Magnetic fluid conditioner |
| 02/12/1991 | US4991614 Method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons |
| 01/08/1991 | US4983319 Preparation of low-viscosity improved stable crude oil transport emulsions |
| 12/18/1990 | US4978365 Ethoxylated alkylphenol emulsifying agents |
| 08/26/1990 | WO1990009920A1 Apparatus for and method of managing liquid under pressure |
| 08/22/1990 | CN1044849A Gas delivery system with a frequency-changeable speed-adjustable and constant-pressure driver |
| 08/16/1990 | EP0382168A2 Computerized analyzing system for piping network |
| 08/09/1990 | WO1990008585A1 Device for regulating and reducing a polyphasic flow, and its use |
| 07/31/1990 | CA1272170A1 Apparatus and method for providing relatively dry, oil free compressed instrument air |
| 07/04/1990 | EP0376796A1 Pig for a liquid-distribution piping, especially for hydrocarbon products |
| 06/27/1990 | EP0375533A1 Pig pipe-line for fluid distribution comprising a 3-way valve |
| 06/27/1990 | EP0375532A1 2-Way valve to be installed downstream in a fluid distribution pig pipe-line |
| 06/13/1990 | EP0371976A1 A method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons. |
| 04/26/1990 | DE3835936A1 Method and arrangement for extracting the moisture from a line system |
| 04/17/1990 | US4917304 Automatic controller for injection of additives into irrigation water |
| 04/10/1990 | US4914758 Fresh water control system and method |
| 02/28/1990 | EP0250536B1 Method and valve for controlling liquid draining |
| 02/20/1990 | US4901759 Constant flow and constant pressure fluid regulator |
| 02/20/1990 | CA1265973A1 Gas supply system for variable demand application |
| 01/31/1990 | EP0155299B1 Process gas controller |
| 01/30/1990 | US4897184 Fluid flow apparatus control and monitoring |
| 01/03/1990 | EP0348886A1 Fresh water control system and method |
| 12/20/1989 | CN1038163A Constant flow and constant pressure fluid regulator |
| 11/21/1989 | US4881567 Liquid removal system |
| 11/21/1989 | CA1263084A1 Air drying system for pneumatic circuits |
| 10/19/1989 | DE3822564C1 Sampling cock as shut-off ball cock |
| 10/17/1989 | US4874015 Monitoring system |
| 10/17/1989 | US4874014 Flow control manifold |
| 09/13/1989 | CN1035553A Lubrication device for gas supply pipe-line in factory |
| 09/06/1989 | EP0330859A1 Monitoring system |
| 08/22/1989 | US4859071 Homogenizing device for a fluid carried in a pipe |
| 07/27/1989 | WO1989006753A1 Lubrication apparatus for air supply pipeline arranged inside factory |
| 07/20/1989 | DE3844456A1 Wasserabscheider, insbesondere fuer ein gasanalysegeraet Water, especially for a gasanalysegeraet |
| 06/28/1989 | CN2040213U Gas pressure adjusting cabinet |
| 06/21/1989 | CN1033476A Dewatering and antifreezing apparatus and method for gas with natural freeze |
| 06/13/1989 | US4838297 Apparatus for injecting a fluid into a network |
| 05/30/1989 | US4835687 Method for optimized management of a system of pipelines and a pipeline system realization in accordance with said method |
| 05/17/1989 | CN2037803U Pressure-measuring and freeze-preventing device in pipeline |
| 04/26/1989 | EP0238535B1 Slug-catcher that can be pigged |
| 04/11/1989 | CA1252287A1 Method of drying long-distance pipelines in sections |
| 03/28/1989 | US4815298 Refrigeration system with bypass valves |
| 12/29/1988 | WO1988010397A1 A method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons |
| 12/13/1988 | US4790514 For manipulating a pipeline valve having a stem |
| 12/08/1988 | DE3717785A1 Process and apparatus for shutting off a buried gas line |
| 11/17/1988 | EP0290451A1 Device for injecting a fluid into a network |
| 10/26/1988 | EP0287622A1 Barrelling installation |
| 10/19/1988 | EP0286974A2 Valving technique |
| 10/12/1988 | EP0286259A2 Multi-phase petroleum stream monitoring system |
| 09/14/1988 | CN87107408A Improved preparation method of emulsion adapted for stable conveing crude oil |
| 08/10/1988 | EP0277586A2 Proportioning valve in a conduit adapted to a go-devil |
| 08/02/1988 | US4760742 Multi-phase petroleum stream monitoring system and method |
| 07/19/1988 | CA1239328A1 Vacuum sewerage system with in pit breather |
| 06/08/1988 | EP0270476A1 Preparation of stable crude oil transport emulsions |
| 05/17/1988 | CA1236753A1 Apparatus and method to prevent hydrate formation in a full wellstream pipeline |