Description
Class E21D : SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
Subclass 1/14: Sinking shafts Preparation of the ground by freezing Freezing apparatus
E21D 1/14
Sub-Class
Stats
- 0 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 0 Total Patent Owners
- 3 TOTAL INVENTORS
Recent Patents
Not Available
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2019/0309,495 | METHOD FOR REDUCING NOISE EMISSIONS ON GROUND FREEZING CONSTRUCTION SITES | Apr 05, 19 | Oct 10, 19 | Linde Aktiengesellschaft |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 6 Months (last 2 years Issuances)
- 6 Months (last 5 years Issuances)