Description
Class E21D : SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
Subclass 5/00: Lining shafts; Linings therefor (E21D 11/00 takes precedence)
E21D 5/00
Sub-Class
Stats
- 16 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 10 Total Patent Owners
- 95 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11891865 | Full-face shaft tunnel boring machine system | Aug 25, 23 | Feb 06, 24 | HEFEI DESIGN & RESEARCH INSTITUTE OF COAL INDUSTRY CO., LTD; University of Science and Technology Beijing; CHINA COAL NO.3 CONSTRUCTION CORPORATION (GROUP) LTD; ANSTEEL GROUP MINING CORPORATION LIMITED; |
| 11867061 | Resin injection dolly | Feb 13, 20 | Jan 09, 24 | FCI Holdings Delaware, Inc. |
| 10597842 | Excavation shoring | Feb 08, 19 | Mar 24, 20 | B&H Construction, LLC |
| 10221688 | Mobile conveyor device for the delivery of tunnel liners | Feb 27, 18 | Mar 05, 19 | RELINE AMERICA, INC. |
| 9938828 | Mobile conveyor device for the delivery of tunnel liners | May 22, 17 | Apr 10, 18 | Not available |
| 9695689 | Mobile conveyor device for the delivery of tunnel liners | Jan 13, 16 | Jul 04, 17 | RELINE AMERICA, INC. |
| 9581022 | Free-wheeling-resistant rolls for mining roof support and the combination of a mining machine and such rolls | May 09, 14 | Feb 28, 17 | The Tensar Corporation |
| 9278889 | Method of reinforcing irregular structures | May 10, 11 | Mar 08, 16 | 3M INNOVATIVE PROPERTIES COMPANY |
| 9194231 | Mesh handling apparatus and related methods | Aug 19, 13 | Nov 24, 15 | J.H. Fletcher & Co. |
| 9038775 | Ladderway system for underground raises | Dec 24, 10 | May 26, 15 | HIRAM (WA) PTY LTD |
| 8926229 | Trench box dewatering system | Sep 13, 11 | Jan 06, 15 | Not available |
| 7766582 | Device and method for transporting trench boxes | Mar 05, 08 | Aug 03, 10 | J Walker Concepts LLC |
| 7748937 | Composite matrix fastener apparatus, system and method | Jan 20, 05 | Jul 06, 10 | Southco, Inc. |
| 7387470 | Stackable concrete forming apparatus components | May 12, 06 | Jun 17, 08 | Wilian Holding Company |
| 5816345 | Horizontal drilling apparatus | Apr 17, 97 | Oct 06, 98 | LOS ALAMOS NAT BANK |
| RE30929 | Collapsible tunnel liner section and method of lining a tunnel | Sep 18, 80 | May 11, 82 | LINK-PIPE TECHNOLOGIES, INC., A CORP. OF CANADA |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0368,989 | Shaft Excavator | Jul 21, 22 | Nov 07, 24 | REDPATH DEILMANN GmbH |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 21 Months (last 2 years Issuances)
- 21 Months (last 5 years Issuances)