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Class Information
Number: 138/DIG.9
Name: Pipes and tubular conduits > Cellular
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6732766 |
Pipe comprising a porous inner wall |
May. 11, 2004 |
| 6382259 |
Insulated pipework systems |
May. 7, 2002 |
| 5971034 |
Thermal duct lining insulation |
Oct. 26, 1999 |
| 5944060 |
Composite duct system |
Aug. 31, 1999 |
| 5896896 |
Method of transporting a fluid in a pipeline having a porous structure |
Apr. 27, 1999 |
| 5795102 |
Marine and submarine apparatus |
Aug. 18, 1998 |
| 5660209 |
Porous pipe and process for producing same |
Aug. 26, 1997 |
| 5613524 |
Fluorocarbon hose assembly including integral foamed fluorocarbon layer |
Mar. 25, 1997 |
| 5324557 |
Multi-skin annularly ribbed tube |
Jun. 28, 1994 |
| 5160769 |
Thermal insulation: CO.sub.2 filled foam |
Nov. 3, 1992 |
| 4970351 |
Wiring harness conduit |
Nov. 13, 1990 |
| 4897135 |
Method of reconstructing pipe systems using fiberglass laminates |
Jan. 30, 1990 |
| 4874649 |
Process for producing hollow bodies of thermoplastic material |
Oct. 17, 1989 |
| 4773448 |
Freeze-resistant plastic pipe and method for its manufacture |
Sep. 27, 1988 |
| 4773450 |
Interlining of fluid transport pipelines, pipes, and the like |
Sep. 27, 1988 |
| 4744842 |
Method of making a coated pipeline |
May. 17, 1988 |
| 4706711 |
Elastic technical hose with a foam insert |
Nov. 17, 1987 |
| 4610740 |
Method for joining insulated conduits |
Sep. 9, 1986 |
| 4577998 |
Production of PVC irrigation pipe and the pipe so produced |
Mar. 25, 1986 |
| 4576846 |
Flexible plastic foam with a groove- and tongue-like closing system |
Mar. 18, 1986 |
| 4531991 |
Heat-insulating tubing |
Jul. 30, 1985 |
| 4464425 |
Foamed polymeric shrink-fit objects and their process of manufacture |
Aug. 7, 1984 |
| 4459251 |
Method and apparatus for controlled application of a coating material to a pipe joint |
Jul. 10, 1984 |
| 4458723 |
Heat insulating pipe |
Jul. 10, 1984 |
| 4453570 |
Concentric tubing having bonded insulation within the annulus |
Jun. 12, 1984 |
| 4447378 |
Method of producing a composite foam wire reinforced hose |
May. 8, 1984 |
| 4399319 |
Thermally insulated composite flexible hose |
Aug. 16, 1983 |
| 4397338 |
Heat resistant protective coating |
Aug. 9, 1983 |
| 4393901 |
Low-permeability hollow spheres and pipe filled with the spheres for temporary weight reduction |
Jul. 19, 1983 |
| 4386628 |
Maintenance lining of passageways |
Jun. 7, 1983 |
| 4380252 |
Wire reinforced hose and method |
Apr. 19, 1983 |
| 4367105 |
Method and apparatus for making elongated articles having sheathed foam insulation |
Jan. 4, 1983 |
| RE31047 |
Hose structure |
Oct. 5, 1982 |
| 4348243 |
Thermal insulation, a process for preparing said insulation and a pipe insulated therewith |
Sep. 7, 1982 |
| 4307756 |
Thermally insulated tubing |
Dec. 29, 1981 |
| 4287245 |
Heat insulator for pipe lines |
Sep. 1, 1981 |
| 4249971 |
Process for making elastomeric hose |
Feb. 10, 1981 |
| 4246057 |
Heat transfer surface and method for producing such surface |
Jan. 20, 1981 |
| 4240850 |
Making thermally-insulated tubing |
Dec. 23, 1980 |
| 4206785 |
Plastic tube part, particularly thermoplastic tube part |
Jun. 10, 1980 |
| 4194494 |
Fireplace plug |
Mar. 25, 1980 |
| 4193105 |
Pipe with an external sealing body |
Mar. 11, 1980 |
| 4182414 |
Water screen |
Jan. 8, 1980 |
| 4157101 |
Hose structure |
Jun. 5, 1979 |
| 4154266 |
Floating cargo hose |
May. 15, 1979 |
| 4146562 |
Extrusion coating method with polyolefin foam |
Mar. 27, 1979 |
| 4139024 |
Thermal insulation structure |
Feb. 13, 1979 |
| 4136427 |
Method for producing improved heat transfer surface |
Jan. 30, 1979 |
| 4136428 |
Method for producing improved heat transfer surface |
Jan. 30, 1979 |
| 4098941 |
Polystyrene foam extrusion |
Jul. 4, 1978 |
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