Assignee
UPONOR NV
US12 patents
Top patents by PatentIndex Score
US4865797ASep 12, 1989
Method and an apparatus for the extrusion of plastic pipes
UPONOR NV39 citations92
US4721594AJan 26, 1988
Method and an apparatus for the production of ribbed pipes
UPONOR NV25 citations92
US5053097AOct 1, 1991
Method of joining tubes having a corrugated wall of plastic material
UPONOR NV41 citations90
US5148837ASep 22, 1992
Pipe for relining underground pipelines
UPONOR NV52 citations85
US5449487ASep 12, 1995
Method and apparatus for orienting plastic of a pipe
UPONOR NV16 citations74
US4690174ASep 1, 1987
Plastic pipe
UPONOR NV15 citations74
US4867928ASep 19, 1989
Apparatus and a method for the production of ribbed pipes
UPONOR NV14 citations73
US5139730AAug 18, 1992
Method and apparatus for manufacturing ribbed pipe
UPONOR NV16 citations70
US4952362AAug 28, 1990
Method and apparatus for the production of pipe
UPONOR NV9 citations66
US5018959AMay 28, 1991
Device for producing a grate construction and a grate construction
UPONOR NV5 citations63
US5171500ADec 15, 1992
Pipe manufacturing line
UPONOR NV4 citations60
US5340299AAug 23, 1994
Apparatus for manufacturing ribbed pipes
UPONOR NV5 citations58