ClassID:

136040

E21D11/083 - CPC Classification

Classification description:

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings , e.g. by assembling; Lining with building materials with preformed concrete slabs Methods or devices for joining adjacent concrete segments

Recent Application in this class:
#1
20260146534
2026-05-28

TUNNEL LINING ELEMENT

#2
20260098474
2026-04-09

TUNNEL CONSTRUCTION METHOD AND MACHINE

#3
20250067177
2025-02-27

CONTROL APPARATUS AND METHOD FOR BUOYANCY ADJUSTMENT OF SHIELD TUNNEL SEGMENTS

#4
20240376821
2024-11-14

Apparatus and Methods for Underground Structures and Construction Thereof

#5
20210079791
2021-03-18

Removable and replaceable anchored tunnel gasket

#6
20210025276
2021-01-28

Process for Sealing Joints Between Prefabricated Ashlars or Similar Construction Elements, in Particular in The Construction of Tunnels and Galleries, and Corresponding Sealing System and Strip

#7
20200407935
2020-12-31

Apparatus and methods for underground structures and construction thereof

#8
20200392723
2020-12-17

Couplings for coupling pre-cast construction segments together and pre-cast construction segments having such couplings

#9
20200173586
2020-06-04

Sealing profile for embedding into a moulding of curable material

#10
20200116021
2020-04-16

PRE-CAST SEGMENT FOR TUNNELS AND METHOD FOR PRODUCING AND MONITORING SAID PRE-CAST SEGMENT

#11
20190309497
2019-10-10

Precast Concrete Panels Used as Surface Lining of Perimeter Surfaces of Excavations

#12
20190226341
2019-07-25

Tunnel system

#13
20190195070
2019-06-27

SEALING PROFILE FOR EMBEDDING INTO A MOULDING OF CURABLE MATERIAL

#14
20180058216
2018-03-01

COUPLER DEVICE AND ASSEMBLY

#15
20170016326
2017-01-19

Fastener and method of sealing passage

#16
20160053614
2016-02-25

PROTECTIVE ELEMENT, CONCRETE ELEMENT, AND METHOD FOR PRODUCING A CONCRETE ELEMENT

#17
20150125215
2015-05-07

METHOD FOR CONSTRUCTING A TUNNEL COURSE, AND STRUCTURAL ELEMENT FOR USE BY THE METHOD

#18
20070261341
2007-11-15

Open bottom fiber reinforced precast concrete arch unit

#19
20070044957
2007-03-01

Method for underground recovery of hydrocarbons

#20
20060201091
2006-09-14

Open bottom fiber reinforced precast concrete arch unit

#21
20050191138
2005-09-01

Method and device for stabilizing a cavity excavated in underground construction

#22
19209820
2025-09-02

Articulated prestressing tensioning device for shield tunnels and reinforcement method thereof