Pipe coating
US4589275A · kind A · utility
13Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Jul 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Pipe coating having a thermal insulating layer of polymeric material and an outer barrier layer is provided with an additional layer between the two layers to facilitate testing of the latter for discontinuities. The intermediate layer can be electroconductive, smooth-surfaced, or of color contrasting to that of the barrier layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.