E03F 2003/065
Refurbishing of sewer pipes
Official title: {Refurbishing of sewer pipes, e.g. by coating, lining}
E03F2003/065 (Refurbishing of sewer pipes) appears on 235 US grants and 159 published applications in this corpus.
Search patents in E03F- Granted patents
- 235
- Published applications
- 159
- Assignees
- 136
- Inventors
- 266
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 3 |
| 2003 | 3 | 4 |
| 2004 | 4 | 8 |
| 2005 | 0 | 4 |
| 2006 | 7 | 4 |
| 2007 | 5 | 1 |
| 2008 | 2 | 3 |
| 2009 | 0 | 1 |
| 2010 | 3 | 3 |
| 2011 | 1 | 2 |
| 2012 | 5 | 10 |
| 2013 | 4 | 4 |
| 2014 | 6 | 12 |
| 2015 | 5 | 5 |
| 2016 | 10 | 13 |
| 2017 | 10 | 13 |
| 2018 | 9 | 6 |
| 2019 | 7 | 16 |
| 2020 | 10 | 12 |
| 2021 | 8 | 10 |
| 2022 | 9 | 8 |
| 2023 | 10 | 6 |
| 2024 | 5 | 3 |
| 2025 | 3 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for repairing pipe with a repair assembly having a lighting assembly7 Jul 2026US 12,674,538 B2Perma-Liner Industries, LLC
- Support structure and method of forming a support structure19 May 2026US 12,631,013 B2HC Properties Inc.
- Lining tube for reconditioning of defective sewer pipes and method of producing and installing one14 Apr 2026US 12,601,166 B2Brandenburger Liner GmbH & Co. KG
- Method for refurbishing pre-stressed concrete cylinder pipe and refurbished pre-stressed concrete cylinder pipe6 May 2025US 12,292,157 B1Technical Construction Infrastructure Inc.
- Lining tube for restoring defective sewer shafts including a berm and a channel, and method for producing same, and method for lining a defective sewer shaft22 Apr 2025US 12,281,742 B2Brandenburger Liner GmbH & Co. KG
- Device and Method for Repairing Pipe with a Repair Assembly Having a Lighting Assembly28 May 2026US 2026/0146699 A1Perma-Liner Industries, LLC
- Irradiation device5 Mar 2026US 2026/0063256 A1Shonan Gosei-Jushi-Seisakusho K. K.
- Method for Refurbishing Pre-Stressed Concrete Cylinder Pipe and Refurbished Pre-Stressed Concrete Cylinder Pipe1 Jan 2026US 2026/0002612 A1
- Packer for pipe and sewer rehabilitation4 Dec 2025US 2025/0369552 A1Pro-Kanal GmbH
- A seal for sealing in a pipeline22 May 2025US 2025/0164057 A1Per Aarsleff A/S
Most cited
By later US patents
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- Flexible tubular lining material84US 6,170,531 B2Karl Otto Braun KG · 2001
- Method for providing the inner surface of a pipe with a flexible tubular lining material through a liquid resin under pressure66US 4,368,091 AAshimori Industry Co., Ltd. · 1983
- Apparatus for porting a side wall of a conduit from interiorly thereof64US 4,197,908 AUnderground Surveys Corporation · 1980
- Device and method for trenchless replacement of underground pipe60US 6,305,880 B1WRB Company, Inc. · 2001