| Patents for F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints (5,444) |
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| 03/12/1997 | CN2249342Y Pipe joint |
| 03/12/1997 | CN2249341Y Double-sealed type pipe joint |
| 03/11/1997 | US5609440 Apparatus and method for arresting the propagation of a buckle in a pipeline |
| 03/11/1997 | US5609212 Adjustable sprinkler head positioning assembly |
| 03/11/1997 | CA2058995C Pipe fitting |
| 03/05/1997 | EP0701651B1 Multiple-seal underwater pipe-riser connector |
| 03/05/1997 | CN2248815Y Sealing screw-threaded joint for petroleum collar |
| 02/27/1997 | DE19531177A1 Valve connection for water meter valve |
| 02/26/1997 | EP0759497A2 Production tubing threaded joint |
| 02/26/1997 | CN2248314Y Separating air-conditioner with spherical junction valve |
| 02/26/1997 | CN2248282Y Protective fastening hoop |
| 02/25/1997 | CA2056318C Threaded tubular connection with outer threaded ring |
| 02/19/1997 | CN2247752Y Adjustable seal gap pipe connector |
| 02/12/1997 | EP0757769A1 Method of manufacturing a pipe connector |
| 02/12/1997 | CN1142582A Pipe screw joint |
| 02/05/1997 | CN2246743Y Combined movable joint |
| 02/05/1997 | CN1142259A Fluid-tight connecting apparatus |
| 01/30/1997 | WO1997003151A1 Compressible graphite lubricant and anaerobic pipe sealant |
| 01/29/1997 | EP0755492A1 Synchronized dual thread connector |
| 01/29/1997 | CN2246231Y Externally connecting air bag butt wire |
| 01/15/1997 | CN2245153Y Single and double external screw-thread movable joint |
| 01/02/1997 | EP0751328A1 Improvements in or relating to threaded couplings |
| 01/01/1997 | CN2244126Y Structure improved copper bend joint |
| 12/17/1996 | US5584488 Seal |
| 12/11/1996 | EP0746666A1 Fluid-tight connecting apparatus |
| 12/10/1996 | US5582439 Strengthened pipe fitting and method |
| 11/27/1996 | CN1136655A Connecting parts |
| 11/26/1996 | US5578059 Medical valve |
| 11/06/1996 | EP0741261A1 Screw connection for pipes |
| 11/06/1996 | CN2239558Y Leakage-proof structure for connector of water pipe |
| 10/30/1996 | CN2238957Y Easy dismounted pipe joint |
| 10/23/1996 | CN2238365Y Gas thread packing belt |
| 10/22/1996 | US5566986 Apparatus for containing a fluid |
| 10/17/1996 | WO1996032604A2 The improved parallel pipe fitting method |
| 10/02/1996 | CN2236596Y Telescopic screwed pipe connector |
| 10/02/1996 | CN2236590Y Screw clip for fast pipe installation |
| 09/26/1996 | WO1996029533A1 Threaded pipe connection |
| 09/11/1996 | CN1130739A Thread joint for tube |
| 09/03/1996 | CA2056181C Assembly arrangement using frustoconical screwthreads for tubes |
| 08/28/1996 | EP0728913A2 Apparatus for connecting sections of a perforating gun string |
| 08/27/1996 | US5549336 High torque tool joint |
| 08/20/1996 | US5547503 Coating and bonding composition |
| 08/20/1996 | US5546973 Threaded valve with safety joint |
| 08/08/1996 | WO1996023999A1 A threaded joint for two tubular plastic parts |
| 08/06/1996 | US5542483 Method for overburden drilling, casing shoe and casing tube for the method, and coupling element for the casing tubes |
| 07/24/1996 | CN2231754Y Torsion-and bending-resisting screw-threaded joint |
| 07/23/1996 | CA2029188C Adjustable angle pipe joint |
| 07/21/1996 | CA2167666A1 Apparatus and method for snubbing tubing-conveyed perforating guns in and out of a well bore |
| 07/16/1996 | US5535837 Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies |
| 07/03/1996 | EP0670021A4 Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection. |
| 06/26/1996 | CN1125303A Threaded joint for pipes |
| 06/25/1996 | US5529284 Reusable pipe union assembly with automatic fluid flow checking |
| 06/25/1996 | US5529127 Apparatus and method for snubbing tubing-conveyed perforating guns in and out of a well bore |
| 06/19/1996 | CN2229592Y Shock isolation waterproof union |
| 06/04/1996 | US5522624 Pipe joint and seal |
| 05/30/1996 | DE4446806C1 Gas-tight pipe connection |
| 05/29/1996 | EP0713952A1 Threaded joint for oil well pipes |
| 05/28/1996 | US5520422 High-pressure fiber reinforced composite pipe joint |
| 05/22/1996 | CN1122886A Self-locking quick pipe connector |
| 05/14/1996 | US5516158 Self-swaging threaded tubular connection |
| 05/09/1996 | WO1996013681A1 Pipe connecting assembly and method for joining two lengths of pipe by a press-fit connection |
| 05/02/1996 | WO1996012911A1 High-pressure fiber reinforced composite pipe joint |
| 04/24/1996 | EP0708224A2 Thread joint for tubes |
| 04/17/1996 | EP0707133A1 Threaded joint for pipes |
| 04/16/1996 | US5507538 Screw thread for thin-walled tubing |
| 04/11/1996 | WO1996010710A1 Steel pipe joint having high galling resistance and surface treatment method thereof |
| 04/09/1996 | US5505502 Multiple-seal underwater pipe-riser connector |
| 04/03/1996 | EP0704652A1 Tube coupling locking device |
| 04/02/1996 | US5503187 Multiple synchronized thread connector |
| 03/29/1996 | CA2156763A1 Tube coupling locking device |
| 03/27/1996 | EP0703396A1 Threaded joint for oil well pipes |
| 03/20/1996 | EP0702190A1 Plastic coating thread and coupling assembly |
| 03/20/1996 | EP0701651A1 Multiple-seal underwater pipe-riser connector |
| 03/13/1996 | EP0673484A4 Corrosion resistant connection for use with tubular members. |
| 03/13/1996 | CN2222278Y Active external quick screw-thread joint |
| 03/12/1996 | US5498035 Pipe coupling |
| 03/07/1996 | WO1996007044A1 Pipe joint |
| 03/07/1996 | CA2198744A1 Pipe joint |
| 02/28/1996 | CN2221142Y Pipeline connecting piece |
| 02/27/1996 | US5494320 Quick joint for rapid, tight-seal connection of pipes, particularly suitable for petroleum pipes |
| 02/22/1996 | WO1996005462A1 Pipe connector |
| 02/20/1996 | US5492375 Drill pipe with improved connectors |
| 02/15/1996 | WO1996004502A1 Pipe joint |
| 02/15/1996 | DE4428871A1 Rohrverbinder Pipe Connector |
| 02/13/1996 | US5490693 Tube coupling locking device |
| 02/08/1996 | WO1996003605A1 Drill pipe with improved connectors |
| 02/01/1996 | WO1996002729A1 Thread coupling |
| 02/01/1996 | CA2192204A1 Thread coupling |
| 01/18/1996 | WO1996001357A1 Helical stress relief groove for drill pipe |
| 01/10/1996 | EP0691499A1 Connection device for pressure pipes |
| 12/13/1995 | EP0686244A1 Pipe connection with non-dovetail interlocking wedge threads |
| 12/12/1995 | US5474334 Coupling assembly |
| 11/28/1995 | US5470111 Plastic coating thread and coupling assembly |
| 11/22/1995 | CN2213266Y Internal joint for malleable iron pipe fitting |
| 11/21/1995 | US5468029 Pipe coupling |
| 11/02/1995 | WO1995029359A1 Method of manufacturing a pipe connector |
| 10/31/1995 | US5462315 Stabilized center-shoulder-sealed tubular connection |
| 10/26/1995 | DE4414256A1 Verfahren zum Herstellen einer Rohrverbindung A method of manufacturing a pipe connection |
| 10/18/1995 | EP0513263B1 Device carrying a wire through the wall of a housing while maintaining a leaktight seal |
| 10/18/1995 | CN2210312Y Joint with external screw-thread |