Kerry D Johanson

US Patent:

8355129, Jan 15, 2013

Filed:

Feb 23, 2012

Appl. No.:

13/403363

Inventors:

Kerry Johanson - Gainesville FL, US

International Classification:

G01N 21/84

US Classification:

356426, 73866

Abstract:

A method bulk strength of powders uses acceleration forces to compact the powder into a small conical test cell that is rotated at high speed. Once the material is consolidated to a prescribed condition, the rotation is stopped, the outlet of the cell is exposed, and the cell is rotated again at increasing acceleration until material freely exits the cell. The forces generated on the powder in the cell are determined and used to compute the cohesive strength of the bulk material.

US Patent:

8467066, Jun 18, 2013

Filed:

Sep 11, 2009

Appl. No.:

13/059404

Inventors:

Kerry Johanson - Gainesville FL, US

Assignee:

Johanson Holdings LLC - Gainesville FL

International Classification:

G01N 21/55

US Classification:

356445, 356300

Abstract:

Methods and devices are provided to measure segregation in solid particulate mixtures. Light energy is projected through a transparent barrier and reflected off a surface of a mixture volume. The constituent fraction in the mixture is determined by analyzing the mixture reflected light as a combination of the constituents' known reflected light spectral contents and intensities. This is accomplished at multiple surface locations to provide constituent fraction data over the mixture volume surface.

US Patent:

20130220038, Aug 29, 2013

Filed:

Dec 18, 2012

Appl. No.:

13/718565

Inventors:

Johanson Holdings LLC - , US
Kerry Johanson - Gainesville FL, US

Assignee:

Johanson Holdings LLC - Gainesville FL

International Classification:

G01N 19/00

US Classification:

738653, 356426

Abstract:

A method testing physical properties of bulk powder materials uses acceleration forces induce a change in physical configuration of a powder sample. Various different properties may be determined by relationships between the applied acceleration and the associated detected change in configuration event. In various embodiments powder strength, friction angle, or other properties may be determined. Novel methods and devices are provided.

US Patent:

20130288326, Oct 31, 2013

Filed:

Mar 14, 2013

Appl. No.:

13/803218

Inventors:

UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. - , US
KERRY JOHANSON - GAINESVILLE FL, US
IOANNIS MARTINOS POLEMATIDIS - JACKSONVILLE FL, US
JOHN M. OWENS - ALACHUA FL, US
DAVID P. CHYNOWETH - GAINESVILLE FL, US

International Classification:

C12M 1/107

US Classification:

435167, 4352901, 4352904, 435168

Abstract:

The subject invention provides advantageous systems and processes for anaerobic digestion of organic waste streams, particularly agricultural waste streams. According to this invention, a new process is provided in which a liquid fraction from an organic waste stream comprising soluble compounds is segregated and incubated in a reactor separate from the solids fraction of the organic waste stream. Digestion of waste in both reactors occurs substantially simultaneously and both reactors produce biogas (thus both reactors function essentially like single stage reactors but allow for continuous or intermittent loading). According to one aspect of the invention, at least one cross-flow baffle is provided for use in an anaerobic digester to collect biogas and break up clumped solids in the reactor. In another aspect of the invention, packing media for use in an anaerobic digester is provided.

US Patent:

47198095, Jan 19, 1988

Filed:

Oct 21, 1986

Appl. No.:

6/922009

Inventors:

Jerry R. Johanson - San Luis Obispo CA
Kerry D. Johanson - San Luis Obispo CA

Assignee:

JR Johanson, Inc. - San Luis Obispo CA

International Classification:

G01N 1100

US Classification:

73866

Abstract:

Apparatus and a test method for bench scale determination of whether a particulate material will flow under the action of gravity alone from an outlet in the bottom of a container. The apparatus includes a test cell having inclined conical side walls, and that is closed at its larger end by a plug having an inwardly-facing surface that is concave and conforms to a coaxial cone. In this way, cylindrical surfaces are avoided, and the shape of the space within the test cell offers minimal interference with the plastic stress field of the material. This testing method includes the novel step of inverting the test cell after consolidation of the test material but prior to application of the failure load.

US Patent:

51176998, Jun 2, 1992

Filed:

Nov 8, 1990

Appl. No.:

7/610530

Inventors:

Jerry R. Johanson - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA

Assignee:

JR Johanson, Inc. - San Luis Obispo CA

International Classification:

G01N 1100

US Classification:

73866

Abstract:

An improved flow-no-flow tester has two major advantages over its predecessor. First, it eliminates the need to invert the test cell after the compaction phase, thereby eliminating the possibility that failure of the compacted sample will occur before the failure load-measuring portion of the test can be done. Second, the improved tester determines the compaction load by measuring the force exerted by the sample against an upper piston, while a compressive force is applied to the sample by a lower piston. This results in greater accuracy than was obtained in the predecessor wherein the compaction load was taken to be the force applied to the compressing piston and which was in error due to the forces of friction and particle binding on the piston as it advanced against the sample. In addition, the improved tester minimizes the potential of particle binding during the failure portion of the test. These advantages result from the structure of the tester, in which the test cell is closed at its bottom by a lower piston that is used for applying the compaction load and that is closed at its upper end by an upper piston against which the sample is pushed in the compaction phase and which is used subsequently for applying a downward failure load.

US Patent:

52897281, Mar 1, 1994

Filed:

Oct 16, 1991

Appl. No.:

7/781018

Inventors:

Jerry R. Johanson - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA

Assignee:

JR Johanson, Inc. - San Luis Obispo CA

International Classification:

G01N 1100

US Classification:

73866

Abstract:

An instrument for measuring certain physical properties of a sample of particulate material so that the flow characteristics of the material can be determined includes an improved compaction assembly having an upper piston that is surrounded by a retractable sleeve and further includes an improved test cell having cylindrical walls, having a failure outlet smaller than the diameter of the failure piston, and having a false bottom that can easily be removed from beneath a sample of compacted material to permit the failure portion of the test to be carried out. The tester can be used for determining the confined yield strength of the material, its bulk density, and its permeability.