0585974-A2 is referenced by 8 patents and cites 19 patents.

An electrofusion joint in which a recess is provided in the same surface as, and adjacent to, the joining portion, which is to be melted to form the joint.

Title
Electrofusion joint and hot water supply header using the same.
Application Number
EP19930118038 19900111
Publication Number
0585974 (A2)
Application Date
January 11, 1990
Publication Date
March 9, 1994
Inventor
Nakaoka Mikio Shinwa Sangyo Co
JP
Shibabuchi Toshio Shinwa Sangy
JP
Mito Kazunori Mitsui Petrochem
JP
Nagatani Fumio Mitsui Petroche
JP
Nishimura Hiroyuki Osaka Gas C
JP
Nakashiba Akio Osaka Gas Co Lt
JP
Assignee
Shinwa Sangyo
JP
Mitsui Petrochemical
JP
Osaka Gas
JP
IPC
B29L 31/18
B29L 31/24
B29K 105/24
B29K 23/00
F16L 41/03
B29C 65/34
F16L 47/02
F16L 47/02
F16L 47/00
B29C 65/34
B29C 65/00
F16L 47/28
F16L 47/03
B29C 65/34
B29C 65/00
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