Description
Class E21D : SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
Subclass 5/06: Lining shafts; Linings therefor (E21D 11/00 takes precedence) with iron or steel (E21D 5/01, E21D 5/012, E21D 5/016 take precedence)
E21D 5/06
Sub-Class
Stats
- 2 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 1 Total Patent Owners
- 5 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10220503 | Device and method for stabilizing and securing testing tubes in cast-in-drilled-hole piles | Jun 06, 17 | Mar 05, 19 | Not available |
| 9074473 | Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts | Feb 27, 12 | Jul 07, 15 | CON-TECH SYSTEMS LTD. |
Recent Publications
Not Available
Top Owners in This Subclass
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)