Assignee
WAVIN BV
NL149 patents
Top patents by PatentIndex Score
US4572523AFeb 25, 1986
Sealing joint and retaining ring for pipe grooved bell and straight spigot joint
WAVIN BV67 citations92
US4566704AJan 28, 1986
Sealing body for a pipe connection
WAVIN BV40 citations92
US4441745AApr 10, 1984
Coupling pipe part for interconnecting corrugated pipe parts
WAVIN BV61 citations92
US4440195AApr 3, 1984
Plastic tube with longitudinal channels in the wall
WAVIN BV34 citations92
US4390383AJun 28, 1983
Method of making plastic pipes having walls with lengthwise extending channels
WAVIN BV31 citations92
US3943273AMar 9, 1976
Electrically conducting plastic pipe system
WAVIN BV48 citations92
US6368547B1Apr 9, 2002
Method for producing an extruded hollow plastic section
WAVIN BV24 citations91
US5948332ASep 7, 1999
Method for manufacturing biaxially oriented tubing from thermoplastic material
WAVIN BV26 citations91
US5942171AAug 24, 1999
Method for manufacturing biaxially oriented tubing from thermoplastic material
WAVIN BV26 citations91
US6214283B1Apr 10, 2001
Method for treating an extruded plastic section and extrusion installation therefor
WAVIN BV37 citations90
US5817270AOct 6, 1998
Method and device for manufacturing biaxially oriented tubing from thermoplastic material
WAVIN BV20 citations90
US4743123AMay 10, 1988
Plastic bag and closed plastic bag with laser-formed venting perforations
WAVIN BV80 citations90
US4634844AJan 6, 1987
Electroweldable socket and a device of manufacturing such a socket
WAVIN BV26 citations90
US4783178ANov 8, 1988
Method of manufacturing a web of plastic bags
WAVIN BV26 citations89
US4561107ADec 24, 1985
Web of plastic bags
WAVIN BV33 citations89
US4491959AJan 1, 1985
Plastic bag with gusset folds and perforations
WAVIN BV55 citations89
US4754781AJul 5, 1988
Plastic pipe comprising an outer corrugated pipe and a smooth inner wall
WAVIN BV145 citations88
US4449910AMay 22, 1984
Apparatus for making profiled plastic tube
WAVIN BV31 citations88
US4369159AJan 18, 1983
Plastic socket pipe part and method of manufacturing same
WAVIN BV29 citations87
US4321228AMar 23, 1982
Method of and apparatus for manufacturing a plastic pipe comprising longitudinally extending hollow channels in its wall
WAVIN BV47 citations87
US4316419AFeb 23, 1982
Plastics pallet
WAVIN BV138 citations87
US4150087AApr 17, 1979
Tube of thermoplastics with thickened end
WAVIN BV32 citations87
US5340160AAug 23, 1994
Thermoplastic saddle in two parts for repairing or renovating a pipe line with branch pipe and repaired or renovated pipe with a saddle
WAVIN BV62 citations86
US5108669AApr 28, 1992
Process and apparatus perforating tubular plastic foil with a laser beam
WAVIN BV31 citations86
US4689936ASep 1, 1987
Process for the packaging of products, using a heat treatment, and closed container with packed products, obtained using a heat treatment
WAVIN BV35 citations86
US4662655AMay 5, 1987
Pipe connection of fibre reinforced plastic pipe parts
WAVIN BV30 citations86
US4578329AMar 25, 1986
Method of marking an article having at least a polyolefin surface and an article having a polyolefin surface provided with a black mark of decomposed polyolefin
WAVIN BV86 citations86
US5286437AFeb 15, 1994
Method and installation for the production of plastic products with the aid of a hot mixture of PVC powder and additives, and a hot mixer suitable for use with this method
WAVIN BV34 citations85
US4230157AOct 28, 1980
Pipe having an end portion, the inner wall of which is provided with a circumferential groove, in which a sealing means is mounted and a pipe joint consisting of this pipe and a spigot end of a second pipe inserted therein
WAVIN BV32 citations85
US4452303AJun 5, 1984
Device and a method for recovering heat from the soil
WAVIN BV40 citations83
US4441744AApr 10, 1984
Branch pipe part
WAVIN BV29 citations83
US6439617B1Aug 27, 2002
Coupler for a pipe or hose section
WAVIN BV27 citations82
US4813457AMar 21, 1989
Flanged pipe part made of fiber-reinforced thermosetting synthetic resin with protective layer preventing crack formation in an angular intersection
WAVIN BV33 citations82
US4214612AJul 29, 1980
Tube of non woven material for reversed osmosis
WAVIN BV48 citations82
US4555884ADec 3, 1985
Plastic glazing profile designed for glazing window-frames
WAVIN BV40 citations81
US4441743AApr 10, 1984
Adhesively joined pipe connection
WAVIN BV37 citations81
US4341392AJul 27, 1982
Plastics pipes having walls with lengthwise extending channels
WAVIN BV23 citations81
US4120325AOct 17, 1978
Electrically conducting plastic pipe system
WAVIN BV29 citations81
US4103320AJul 25, 1978
Thermally insulated pipe with electrically conducting portions for dissipating static electricity
WAVIN BV23 citations81
US3991150ANov 9, 1976
Method for forming a plastic pipe
WAVIN BV20 citations81
US5182954AFeb 2, 1993
Inner tube element for use in a device for taking soil samples, and method for manufacturing such an inner tube element
WAVIN BV23 citations80
US4867203ASep 19, 1989
A method of relining or preparing sewage pipe using a plastic pipe comprising an outer corrugated pipe and a smooth inner wall
WAVIN BV25 citations80
US4636190AJan 13, 1987
Apparatus for manufacturing a web of plastic bags
WAVIN BV23 citations79
US4465307AAug 14, 1984
Pipe coupler for insulated pipes
WAVIN BV23 citations78
US4428591AJan 31, 1984
Plastic pipe provided with a groove
WAVIN BV17 citations78
US4338716AJul 13, 1982
Plastic pipe provided with a groove
WAVIN BV16 citations78
US4143884AMar 13, 1979
Sealing member for spigot-and-socket pipe coupling
WAVIN BV23 citations78
US10808390B2Oct 20, 2020
Plastic infiltration unit and system
WAVIN BV9 citations77
US10132069B2Nov 20, 2018
Plastic infiltration unit, a system comprising a plurality of plastic infiltration units
WAVIN BV13 citations77
US4955504ASep 11, 1990
Injection-moulded plastic lid for a container and a container having such an injection-moulded plastic lid
WAVIN BV22 citations77
Showing the top 50 of 149 patents by PatentIndex Score.