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Keystone Retaining Wall Systems LLC
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West Chester, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Block, block system and method of making a block
Patent number
11,958,211
Issue date
Apr 16, 2024
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Retaining wall block and retaining wall block system
Patent number
11,598,094
Issue date
Mar 7, 2023
Keystone Retaining Wall Systems LLC
Robert John Lundell
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Block, block system and method of making a block
Patent number
11,498,241
Issue date
Nov 15, 2022
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Retaining wall containing wall blocks with weight bearing pads
Patent number
11,401,714
Issue date
Aug 2, 2022
Keystone Retaining Wall Systems, LLC
David M. LaCroix
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Bridging lintel with support hangers for an insert and block system...
Patent number
11,346,559
Issue date
May 31, 2022
Keystone Retaining Wall Systems LLC
William H. Karau
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Wall blocks having one or more multi-faceted faces or side walls, w...
Patent number
11,174,616
Issue date
Nov 16, 2021
Keystone Retaining Wall Systems LLC
Dominic T. Riccobene
E04 - BUILDING
Information
Patent Grant
Patio blocks and block systems with side surface positioning and re...
Patent number
11,060,305
Issue date
Jul 13, 2021
Keystone Retaining Wall Systems LLC
Robert John Lundell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Wall blocks, veneer panels for wall blocks and method of constructi...
Patent number
10,927,547
Issue date
Feb 23, 2021
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Landscaping block wall
Patent number
D905282
Issue date
Dec 15, 2020
Keystone Retaining Wall Systems LLC
Dominic T. Riccobene
D25 - Building units and construction elements
Information
Patent Grant
Veneer connectors, wall blocks, veneer panels for wall blocks, and...
Patent number
10,760,281
Issue date
Sep 1, 2020
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Grant
Retaining wall block and retaining wall block system
Patent number
10,760,269
Issue date
Sep 1, 2020
Keystone Retaining Wall Systems LLC
Robert John Lundell
E04 - BUILDING
Information
Patent Grant
Blocks, block systems and methods of making blocks
Patent number
10,760,242
Issue date
Sep 1, 2020
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Grant
Wall blocks having one or more multi-faceted faces or side walls, w...
Patent number
10,711,425
Issue date
Jul 14, 2020
Keystone Retaining Wall Systems LLC
Dominic T. Riccobene
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Patio blocks and block systems with side surface positioning and re...
Patent number
10,655,340
Issue date
May 19, 2020
Keystone Retaining Wall Systems LLC
Robert John Lundell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Landscaping block
Patent number
D880727
Issue date
Apr 7, 2020
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Planter block
Patent number
D877653
Issue date
Mar 10, 2020
Keystone Retaining Wall Systems LLC
Robert John Lundell
D11 - Jewelry, symbolic insignia, and ornaments
Information
Patent Grant
Retaining wall containing wall blocks with weight bearing pads
Patent number
10,519,656
Issue date
Dec 31, 2019
Keystone Retaining Wall Systems LLC
David M. LaCroix
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Landscaping block
Patent number
D866799
Issue date
Nov 12, 2019
Keystone Retaining Wall Systems LLC
Dominic T. Riccobene
D25 - Building units and construction elements
Information
Patent Grant
Blocks and block connectors, block systems and methods of making bl...
Patent number
10,422,101
Issue date
Sep 24, 2019
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Patio blocks and block systems with side surface positioning and re...
Patent number
10,370,859
Issue date
Aug 6, 2019
Keystone Retaining Wall Systems LLC
Robert John Lundell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Blocks, block systems and methods of making blocks
Patent number
10,337,163
Issue date
Jul 2, 2019
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Wall block
Patent number
D846760
Issue date
Apr 23, 2019
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Landscaping block
Patent number
D844181
Issue date
Mar 26, 2019
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Veneer connectors, wall blocks, veneer panels for wall blocks, and...
Patent number
10,156,077
Issue date
Dec 18, 2018
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Grant
Landscaping block
Patent number
D824542
Issue date
Jul 31, 2018
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Landscaping block
Patent number
D819231
Issue date
May 29, 2018
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Wall block and wall block system
Patent number
9,957,687
Issue date
May 1, 2018
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Grant
Landscaping block
Patent number
D816869
Issue date
May 1, 2018
Keystone Retaining Wall Systems LLC
Robert John Lundell
D25 - Building units and construction elements
Information
Patent Grant
Patio blocks and block systems with side surface positioning and re...
Patent number
9,951,527
Issue date
Apr 24, 2018
Keystone Retaining Wall Systems LLC
Robert John Lundell
E04 - BUILDING
Information
Patent Grant
Connector
Patent number
D815938
Issue date
Apr 24, 2018
Keystone Retaining Wall Systems LLC
Robert A. MacDonald
D08 - Tools and hardware
Patents Applications
last 30 patents
Information
Patent Application
BLOCK, BLOCK SYSTEM AND METHOD OF MAKING A BLOCK
Publication number
20230219253
Publication date
Jul 13, 2023
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Application
WALL BLOCKS, VENEER PANELS FOR WALL BLOCKS AND METHOD OF CONSTRUCTI...
Publication number
20210172171
Publication date
Jun 10, 2021
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
RETAINING WALL BLOCK AND RETAINING WALL BLOCK SYSTEM
Publication number
20200347596
Publication date
Nov 5, 2020
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
WALL BLOCKS HAVING ONE OR MORE MULTI-FACETED FACES OR SIDE WALLS, W...
Publication number
20200299920
Publication date
Sep 24, 2020
KEYSTONE RETAINING WALL SYSTEMS LLC
Dominic T. Riccobene
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
PATIO BLOCKS AND BLOCK SYSTEMS WITH SIDE SURFACE POSITIONING AND RE...
Publication number
20200284046
Publication date
Sep 10, 2020
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Application
BRIDGING LINTEL WITH SUPPORT HANGERS FOR AN INSERT AND BLOCK SYSTEM...
Publication number
20200182473
Publication date
Jun 11, 2020
KEYSTONE RETAINING WALL SYSTEMS LLC
William H. Karau
F24 - HEATING RANGES VENTILATING
Information
Patent Application
RETAINING WALL CONTAINING WALL BLOCKS WITH WEIGHT BEARING PADS
Publication number
20200131766
Publication date
Apr 30, 2020
KEYSTONE RETAINING WALL SYSTEMS LLC
David M. LaCroix
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
PATIO BLOCKS AND BLOCK SYSTEMS WITH SIDE SURFACE POSITIONING AND RE...
Publication number
20190352914
Publication date
Nov 21, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E04 - BUILDING
Information
Patent Application
BLOCKS, BLOCK SYSTEMS AND METHODS OF MAKING BLOCKS
Publication number
20190323198
Publication date
Oct 24, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
WALL BLOCKS HAVING ONE OR MORE MULTI-FACETED FACES OR SIDE WALLS, W...
Publication number
20190277001
Publication date
Sep 12, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Dominic T. Riccobene
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
CONNECTION SURFACE FOR A STRUCTURAL UNIT AND METHOD OF MAKING SAME
Publication number
20190234041
Publication date
Aug 1, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Thomas S. Riccobene
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
RETAINING WALL BLOCK AND RETAINING WALL BLOCK SYSTEM
Publication number
20190119915
Publication date
Apr 25, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E04 - BUILDING
Information
Patent Application
VENEER CONNECTORS, WALL BLOCKS, VENEER PANELS FOR WALL BLOCKS, AND...
Publication number
20190055736
Publication date
Feb 21, 2019
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
WALL BLOCKS, VENEER PANELS FOR WALL BLOCKS AND METHOD OF CONSTRUCTI...
Publication number
20180334805
Publication date
Nov 22, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
BLOCK, BLOCK SYSTEM AND METHOD OF MAKING A BLOCK
Publication number
20180333893
Publication date
Nov 22, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
PATIO BLOCKS AND BLOCK SYSTEMS WITH SIDE SURFACE POSITIONING AND RE...
Publication number
20180238061
Publication date
Aug 23, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E04 - BUILDING
Information
Patent Application
RETAINING WALL CONTAINING WALL BLOCKS WITH WEIGHT BEARING PADS
Publication number
20180106038
Publication date
Apr 19, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
David M. LaCroix
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCKS, BLOCK SYSTEMS AND METHODS OF MAKING BLOCKS
Publication number
20180044877
Publication date
Feb 15, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCKS AND BLOCK CONNECTORS, BLOCK SYSTEMS AND METHODS OF MAKING BL...
Publication number
20180030683
Publication date
Feb 1, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
VENEER CONNECTORS, WALL BLOCKS, VENEER PANELS FOR WALL BLOCKS, AND...
Publication number
20180023303
Publication date
Jan 25, 2018
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E04 - BUILDING
Information
Patent Application
RETAINING WALL CONTAINING WALL BLOCKS WITH WEIGHT BEARING PADS
Publication number
20170121974
Publication date
May 4, 2017
KEYSTONE RETAINING WALL SYSTEMS LLC
David M. LaCroix
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
WALL BLOCK AND WALL BLOCK SYSTEM
Publication number
20170114515
Publication date
Apr 27, 2017
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCK SPLITTER ASSEMBLY AND METHOD OF PRODUCING WALL BLOCKS
Publication number
20170072593
Publication date
Mar 16, 2017
KEYSTONE RETAINING WALL SYSTEMS LLC
David M. LaCroix
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Application
PATIO BLOCKS AND BLOCK SYSTEMS WITH SIDE SURFACE POSITIONING AND RE...
Publication number
20170022722
Publication date
Jan 26, 2017
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert John Lundell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Application
BLOCK SPLITTER ASSEMBLY AND METHOD OF PRODUCING WALL BLOCKS
Publication number
20160303763
Publication date
Oct 20, 2016
KEYSTONE RETAINING WALL SYSTEMS LLC
David M. LaCroix
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCKS, BLOCK SYSTEMS AND METHODS OF MAKING BLOCKS
Publication number
20160244936
Publication date
Aug 25, 2016
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCKS AND BLOCK CONNECTORS, BLOCK SYSTEMS AND METHODS OF MAKING BL...
Publication number
20160237638
Publication date
Aug 18, 2016
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
WALL BLOCKS, VENEER PANELS FOR WALL BLOCKS AND METHOD OF CONSTRUCTI...
Publication number
20160069078
Publication date
Mar 10, 2016
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
WALL BLOCK AND WALL BLOCK SYSTEM
Publication number
20160010307
Publication date
Jan 14, 2016
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
BLOCK, BLOCK SYSTEM AND METHOD OF MAKING A BLOCK
Publication number
20150097312
Publication date
Apr 9, 2015
KEYSTONE RETAINING WALL SYSTEMS LLC
Robert A. MacDonald
B28 - WORKING CEMENT, CLAY, OR STONE
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last 30 trademarks