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Class Information
Number: 138/175
Name: Pipes and tubular conduits > Reinforced > With embedded element > Clay, concrete or masonry
Description: Device wherein said wall is clay, concrete or masonry.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7429323 |
Water treatment system and pressure pipe therefor |
Sep. 30, 2008 |
| 7347227 |
Method of reinforcing a cylindrical pipeline and prefabricated plate used in such method |
Mar. 25, 2008 |
| 7200973 |
Wire reinforced thermoplastic coating |
Apr. 10, 2007 |
| 6796334 |
Duct repairing material, repairing structure, and repairing method |
Sep. 28, 2004 |
| 6403180 |
Pipe insulation |
Jun. 11, 2002 |
| 6247501 |
Clip-on stirrup mat |
Jun. 19, 2001 |
| 6197395 |
Hollow reinforcing members and composites containing the same |
Mar. 6, 2001 |
| 6076562 |
Pre-stressed concrete pipe |
Jun. 20, 2000 |
| 6068027 |
Pipeline insulation |
May. 30, 2000 |
| 5955162 |
Calcium alumina cement lined pipe |
Sep. 21, 1999 |
| 5927346 |
Concrete pipes and methods for the manufacture thereof |
Jul. 27, 1999 |
| 5924458 |
Self-locking stirrup mat |
Jul. 20, 1999 |
| 5904185 |
Conduit for the circulation of fluid |
May. 18, 1999 |
| 5798151 |
Hydraulically settable articles which include helically wound filaments |
Aug. 25, 1998 |
| 5691050 |
Concrete molding with improved acid resistance |
Nov. 25, 1997 |
| 5649568 |
Glass fiber reinforced cement liners for pipelines and casings |
Jul. 22, 1997 |
| 5599597 |
Concrete molding with improved acid resistance |
Feb. 4, 1997 |
| 5593744 |
Hollow reinforcing members and composites containing the same |
Jan. 14, 1997 |
| 5573040 |
Interlocked plastic-encased concrete pipe |
Nov. 12, 1996 |
| 5487251 |
Apparatus and method for reinforcing cast structures |
Jan. 30, 1996 |
| 5385175 |
Conduit having hydrophilic and oleophobic inner surfaces for oil transportation |
Jan. 31, 1995 |
| 5312657 |
Phosphate cement pipe cladding |
May. 17, 1994 |
| 5271974 |
Improved cement and polyolefin lined product |
Dec. 21, 1993 |
| 5186217 |
Fluid-impervious structure and method of making same |
Feb. 16, 1993 |
| 5065795 |
Prestressed concrete articles |
Nov. 19, 1991 |
| 5066834 |
Flexible guide rail and method for manufacturing same |
Nov. 19, 1991 |
| 5061121 |
Fluid-conveying conduit |
Oct. 29, 1991 |
| 4976291 |
Centrifugally molded concrete composite pipe |
Dec. 11, 1990 |
| 4808032 |
Thrust pipe |
Feb. 28, 1989 |
| 4771530 |
Application of inwardly directed prestressing pressure to concrete members |
Sep. 20, 1988 |
| 4759390 |
Coated metal pipe having bending capability |
Jul. 26, 1988 |
| 4684155 |
Pipe elbow with abrasion resistant composite inner liner and method for forming |
Aug. 4, 1987 |
| 4644978 |
Tension arch structure |
Feb. 24, 1987 |
| 4633568 |
Method of manufacturing reinforced concrete pipe having an evenly distributed steel wire reinforcement |
Jan. 6, 1987 |
| 4611635 |
Coated pipe having bending capability |
Sep. 16, 1986 |
| 4583771 |
Concrete pipe |
Apr. 22, 1986 |
| 4494576 |
Reinforcing system for concrete pipe |
Jan. 22, 1985 |
| 4467995 |
Spacer bar and related method for concrete pipe manufacture |
Aug. 28, 1984 |
| 4466467 |
Stackable stirrup mat |
Aug. 21, 1984 |
| 4450873 |
Reinforced plastic composite structure |
May. 29, 1984 |
| 4441527 |
Concrete pipe reinforcement spacer bar |
Apr. 10, 1984 |
| 4439972 |
Circumferential stirrup panel |
Apr. 3, 1984 |
| 4412561 |
Glass fiber-reinforced cement non-plate articles |
Nov. 1, 1983 |
| 4378032 |
Slotted concrete pipe |
Mar. 29, 1983 |
| 4371197 |
Pipeline for conveying hot or cold fluids |
Feb. 1, 1983 |
| 4361336 |
Epoxy-concrete coated pipe |
Nov. 30, 1982 |
| 4345626 |
Circumferential stirrup panel |
Aug. 24, 1982 |
| 4345625 |
Pipe joints of reinforced resin and process for their molding |
Aug. 24, 1982 |
| 4338044 |
Prevention of sliding of a weight jacket over the corrosion coating of a pipe line |
Jul. 6, 1982 |
| 4335755 |
Coating for pipe |
Jun. 22, 1982 |
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