Llewellyn L. Johnston

Person

Vancouver, WA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Mold assembly for concrete products forming machine
- Patent number 10,245,756
- Issue date Apr 2, 2019
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Enhanced release compression shoe for use with concrete product for...
- Patent number 10,066,300
- Issue date Sep 4, 2018
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Large pallet machine for forming molded products
- Patent number 7,635,261
- Issue date Dec 22, 2009
- Columbia Machine, Inc.
- Douglas Vernon High
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Wall block, system and mold for making the same
- Patent number 7,591,447
- Issue date Sep 22, 2009
- Westblock Systems, Inc.
- James Hammer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus and methods for making a masonry block with a roughened s...
- Patent number 7,100,886
- Issue date Sep 5, 2006
- Westblock Systems, Inc.
- James Hammer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Unitary paver mold
- Patent number 6,007,321
- Issue date Dec 28, 1999
- Kevin Meckel
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for forming a multilevel concrete product
- Patent number 5,939,104
- Issue date Aug 17, 1999
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method and apparatus for accommodating tolerances in a mold for con...
- Patent number 5,866,026
- Issue date Feb 2, 1999
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Self-aligning mold box assembly
- Patent number 5,743,510
- Issue date Apr 28, 1998
- Columbia Machine
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for adjustably mounting a mold box
- Patent number 5,648,009
- Issue date Jul 15, 1997
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Mold box assembly with partition plates
- Patent number 5,542,837
- Issue date Aug 6, 1996
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
ENHANCED RELEASE COMPRESSION SHOE FOR USE WITH CONCRETE PRODUCT FOR...
- Publication number 20180021979
- Publication date Jan 25, 2018
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
MOLD ASSEMBLY FOR CONCRETE PRODUCTS FORMING MACHINE
- Publication number 20170197331
- Publication date Jul 13, 2017
- Columbia Machine, Inc.
- Llewellyn L. Johnston
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
LARGE PALLET MACHINE FOR FORMING MOLDED PRODUCTS
- Publication number 20100227016
- Publication date Sep 9, 2010
- Columbia Machine, Inc.
- Douglas Vernon High
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
LARGE PALLET MACHINE FOR FORMING MOLDED PRODUCTS
- Publication number 20100086634
- Publication date Apr 8, 2010
- Columbia Machine, Inc.
- Douglas Vernon High
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
CONCRETE MOLD BOX ASSEMBLY WITH POLYURETHANE BONDED COMPARTMENTS
- Publication number 20070262229
- Publication date Nov 15, 2007
- Columbia Machine, Inc.
- Douglas V. High
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Large pallet machine for forming molded products
- Publication number 20060182840
- Publication date Aug 17, 2006
- Columbia Machine, Inc.
- Douglas Vernon High
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Wall block, system and mold for making the same
- Publication number 20050108973
- Publication date May 26, 2005
- Westblock Systems, Inc.
- James Hammer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Apparatus and methods for making a masonry block with a roughened s...
- Publication number 20030164574
- Publication date Sep 4, 2003
- James Hammer
- B28 - WORKING CEMENT, CLAY, OR STONE

Llewellyn L. Johnston

Person

Patents Grantslast 30 patents

Mold assembly for concrete products forming machine

Enhanced release compression shoe for use with concrete product for...

Large pallet machine for forming molded products

Wall block, system and mold for making the same

Apparatus and methods for making a masonry block with a roughened s...

Unitary paver mold

Apparatus for forming a multilevel concrete product

Method and apparatus for accommodating tolerances in a mold for con...

Self-aligning mold box assembly

Apparatus for adjustably mounting a mold box

Mold box assembly with partition plates

Patents Applicationslast 30 patents

ENHANCED RELEASE COMPRESSION SHOE FOR USE WITH CONCRETE PRODUCT FOR...

MOLD ASSEMBLY FOR CONCRETE PRODUCTS FORMING MACHINE

LARGE PALLET MACHINE FOR FORMING MOLDED PRODUCTS

LARGE PALLET MACHINE FOR FORMING MOLDED PRODUCTS

CONCRETE MOLD BOX ASSEMBLY WITH POLYURETHANE BONDED COMPARTMENTS

Large pallet machine for forming molded products

Wall block, system and mold for making the same

Apparatus and methods for making a masonry block with a roughened s...