Harold K. Hilfiker

Person

Eureka, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Adjustable single stage panel system and method
- Patent number 11,466,422
- Issue date Oct 11, 2022
- Hilfiker Retaining Walls
- Harold K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Panel connector and method of use
- Patent number 9,702,110
- Issue date Jul 11, 2017
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method for constructing a mechanically stabilized earthen embankmen...
- Patent number 9,011,048
- Issue date Apr 21, 2015
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Semi-extensible steel soil reinforcements for mechanically stabiliz...
- Patent number 8,079,782
- Issue date Dec 20, 2011
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Compressible welded wire wall for retaining earthen formations
- Patent number RE42680
- Issue date Sep 6, 2011
- Hilfiker Pipe Company
- Harold K. Hilfiker
- 405 - Hydraulic and earth engineering
Information Patent Grant
Retaining wall having polymeric reinforcing mats
- Patent number 7,281,882
- Issue date Oct 16, 2007
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Earthen retaining wall having flat soil reinforcing mats which may...
- Patent number 7,073,983
- Issue date Jul 11, 2006
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Earthen retaining wall having flat soil reinforcing mats which may...
- Patent number 6,857,823
- Issue date Feb 22, 2005
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Compressible welded wire wall for retaining earthen formations
- Patent number 6,357,970
- Issue date Mar 19, 2002
- Hilfiker Pipe Company
- Harold K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Soil filled wall
- Patent number 5,647,695
- Issue date Jul 15, 1997
- Hilfiker Pipe Company
- Harold K. Hilfiker
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Wire retaining wall apparatus and method for earthen formations
- Patent number 4,505,621
- Issue date Mar 19, 1985
- Hilfiker Pipe Co.
- Harold K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Retaining wall for earthen formations and method of making the same
- Patent number 4,391,557
- Issue date Jul 5, 1983
- Hilfiker Pipe Co.
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method and apparatus for retaining earthen formations through means...
- Patent number 4,329,089
- Issue date May 11, 1982
- Hilfiker Pipe Company
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Retaining and reinforcement system method and apparatus for earthen...
- Patent number 4,324,508
- Issue date Apr 13, 1982
- Hilfiker Pipe Co.
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR CONSTRUCTING A MECHANICALLY STABILIZED EARTHEN EMBANKMEN...
- Publication number 20140105693
- Publication date Apr 17, 2014
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
METHOD FOR CONSTRUCTING A MECHANICALLY STABILIZED EARTHEN EMBANKMEN...
- Publication number 20090285640
- Publication date Nov 19, 2009
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Earthen retaining wall having flat soil reinforcing mats which may...
- Publication number 20060204342
- Publication date Sep 14, 2006
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Earthen retaining wall having flat soil reinforcing mats which may...
- Publication number 20050163574
- Publication date Jul 28, 2005
- William K. Hilfiker
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Harold K. Hilfiker

Person

Patents Grantslast 30 patents

Adjustable single stage panel system and method

Panel connector and method of use

Method for constructing a mechanically stabilized earthen embankmen...

Semi-extensible steel soil reinforcements for mechanically stabiliz...

Compressible welded wire wall for retaining earthen formations

Retaining wall having polymeric reinforcing mats

Earthen retaining wall having flat soil reinforcing mats which may...

Earthen retaining wall having flat soil reinforcing mats which may...

Compressible welded wire wall for retaining earthen formations

Soil filled wall

Wire retaining wall apparatus and method for earthen formations

Retaining wall for earthen formations and method of making the same

Method and apparatus for retaining earthen formations through means...

Retaining and reinforcement system method and apparatus for earthen...

Patents Applicationslast 30 patents

METHOD FOR CONSTRUCTING A MECHANICALLY STABILIZED EARTHEN EMBANKMEN...

METHOD FOR CONSTRUCTING A MECHANICALLY STABILIZED EARTHEN EMBANKMEN...

Earthen retaining wall having flat soil reinforcing mats which may...

Earthen retaining wall having flat soil reinforcing mats which may...