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E21D21/0013
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21D
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
E21D21/00
Anchoring-bolts for roof, floor in galleries or longwall working , or shaft-lining protection
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E21D21/0013
Protection against corrosion
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Patents Grants
last 30 patents
Information
Patent Grant
Self-draining rock anchor
Patent number
10,267,148
Issue date
Apr 23, 2019
Nevada Industrial LLC
Chris Ravencroft
E21 - EARTH DRILLING MINING
Information
Patent Grant
Strand, cable bolt and its installation
Patent number
9,909,419
Issue date
Mar 6, 2018
N.V. Bekaert S.A.
Stijn Defossez
E21 - EARTH DRILLING MINING
Information
Patent Grant
Yieldable cone bolt and method of manufacturing same
Patent number
8,485,758
Issue date
Jul 16, 2013
Ming Cai
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Corrosion-protected, self-drilling anchor and anchor subunit and me...
Patent number
8,142,109
Issue date
Mar 27, 2012
DYWIDAG-Systems International GmbH
Frank Schmidt
E21 - EARTH DRILLING MINING
Information
Patent Grant
Coupler for ducts used in post-tension rock anchorage systems
Patent number
5,775,849
Issue date
Jul 7, 1998
Felix L. Sorkin
E04 - BUILDING
Information
Patent Grant
Rock anchor arrangement
Patent number
4,576,524
Issue date
Mar 18, 1986
Bochumer Eisenhuette Heintzmann GmbH & Co KG
Peter Heintzmann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Friction rock stabilizer and sheathing means, in combination, and m...
Patent number
4,490,074
Issue date
Dec 25, 1984
Ingersoll-Rand Company
Walter M. Chaiko
E21 - EARTH DRILLING MINING
Information
Patent Grant
Friction rock stabilizer and a method of isolating the same from a...
Patent number
4,400,113
Issue date
Aug 23, 1983
Ingersol-Rand Company
Walter M. Chaiko
E21 - EARTH DRILLING MINING
Information
Patent Grant
Anchor elements
Patent number
4,302,131
Issue date
Nov 24, 1981
Fosroc International Limited
John V. Brown
E21 - EARTH DRILLING MINING
Information
Patent Grant
Anti-corrosive structure anchor assembly
Patent number
4,285,993
Issue date
Aug 25, 1981
John H. Green
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Method of anchoring a borehole anchor
Patent number
4,179,861
Issue date
Dec 25, 1979
Fosroc A.G.
John V. Brown
E21 - EARTH DRILLING MINING
Information
Patent Grant
Corrosion protected tensioning member for a prestressable anchor in...
Patent number
4,140,429
Issue date
Feb 20, 1979
Dyckerhoff & Widmann Aktiengesellschaft
Thomas Herbst
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Patents Applications
last 30 patents
Information
Patent Application
Anti-Friction Washer System
Publication number
20160017709
Publication date
Jan 21, 2016
FCI HOLDINGS DELAWARE, INC.
Travis Mikel Sub
E21 - EARTH DRILLING MINING
Information
Patent Application
STRAND, CABLE BOLT AND ITS INSTALLATION
Publication number
20150043976
Publication date
Feb 12, 2015
N.V. BEKAERT S.A.
Stijn Defossez
D07 - ROPES CABLES OTHER THAN ELECTRIC
Information
Patent Application
YIELDABLE CONE BOLT AND METHOD OF MANUFACTURING SAME
Publication number
20120014756
Publication date
Jan 19, 2012
Ming Cai
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
CORROSION-PROTECTED, SELF-DRILLING ANCHOR AND ANCHOR SUBUNIT AND ME...
Publication number
20110070034
Publication date
Mar 24, 2011
Frank SCHMIDT
E21 - EARTH DRILLING MINING
Information
Patent Application
Method of Assessing a Multilayer Strata for Rock Bolt Installation
Publication number
20110002746
Publication date
Jan 6, 2011
DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
David W. Evans
E21 - EARTH DRILLING MINING
Information
Patent Application
Mining Component Coating Process
Publication number
20100159155
Publication date
Jun 24, 2010
Mohan Kapahi
E21 - EARTH DRILLING MINING