Thomas J Maxwell

US Patent:

49896067, Feb 5, 1991

Filed:

Aug 8, 1988

Appl. No.:

7/229617

Inventors:

John L. Gehrich - Laguna Beach CA
Thomas P. Maxwell - Santa Ana CA
Thomas G. Hacker - Anaheim CA

Assignee:

Minnesota Mining and Manufactoring Company - St. Paul MN

International Classification:

A61B 500

US Classification:

128637

Abstract:

An assembly useful in conjunction with a signal transmission means for the measurement of a compositional parameter of the blood of a patient is disclosed. This assembly comprises a housing adapted and sized to be located outside the body of a patient and having a fluid flow passage therethrough into which blood from the patient is passed from a hollow tube, the fluid flow passage being defined by a wall which is substantially impermeable to blood, the housing being adapted to be removeably secured to a signal transmission system such that the housing is capable of being removed from the signal transmission system without disrupting the fluid flow passage; and a sensing element located in the housing in or near the fluid flow passage for providing a signal directly to the signal transmission system in response to a compositional parameter of blood located in the fluid flow passage.

US Patent:

52847756, Feb 8, 1994

Filed:

Sep 21, 1992

Appl. No.:

7/949771

Inventors:

Masao Yafuso - El Toro CA
Mark Z. Holody - Irvine CA
Thomas P. Maxwell - Santa Ana CA
Thomas G. Hacker - Anaheim CA

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

G01N 3350

US Classification:

436 68

Abstract:

Sensing composition precursors and sensing compositions, useful in sensing the concentration of a gas, e. g. , carbon dioxide, in a medium, e. g. , blood, are disclosed. In one embodiment, the sensing composition precursor comprises a dispersed aqueous liquid including a sensing component dissolved therein, a polymer precursor, and a hydrophilic dispersing agent selected from hydroxyalkyl celluloses and mixtures thereof in an amount effective to facilitate maintaining the dispersed aqueous liquid.

US Patent:

51750163, Dec 29, 1992

Filed:

Mar 20, 1990

Appl. No.:

7/496560

Inventors:

Masao Yafuso - El Toro CA
Mark Z. Holody - Irvine CA
Thomas P. Maxwell - Santa Ana CA
Thomas G. Hacker - Anaheim CA

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

G01N 100
B05D 136

US Classification:

427 2

Abstract:

A method for making a sensing element, and an assembled sensing element, useful in sensing the concentration of a gas, e. g. , carbon dioxide, in a medium, e. g. blood, are disclosed. In one embodiment, the method comprises placing a quantity of a sensing composition precursor between and in contact with a transparent, gas impermeable solid disc and an opaque, gas permeable film, the sensing composition precursor comprises a sensing component, a polymer precursor and a cross-linking agent; and forming a gas sensing composition from this quantity of sensing composition precursor.

US Patent:

54620520, Oct 31, 1995

Filed:

Apr 27, 1993

Appl. No.:

8/055800

Inventors:

John L. Gehrich - Laguna Beach CA
Thomas P. Maxwell - Santa Ana CA
Thomas G. Hacker - Anaheim CA
Mark Z. Holody - Irvine CA

Assignee:

Minnesota Mining And Manufacturing Co. - St. Paul MN

International Classification:

A61B 500

US Classification:

128632

Abstract:

A sensor cassette for use in measuring a compositional parameter of blood comprising a housing having a wall defining a passage which is adapted to receive blood. The wall is at least somewhat permeable to the compositional parameter. A support element, which is less permeable to the compositional parameter of blood than the housing, is carried by a region of the wall. A sensor is carried by the support element and provides a signal in response to the compositional parameter. The support element separates the sensor from at least a portion of such region of the wall so that the affect of the permeability of the housing to the compositional parameter on the signal from the sensor is reduced.

US Patent:

49543180, Sep 4, 1990

Filed:

Aug 31, 1987

Appl. No.:

7/091432

Inventors:

Masao Yafuso - El Toro CA
Cheng F. Yan - Irvine CA
Thomas G. Hacker - Anaheim CA
Henry K. Hui - Irvine CA
Thomas P. Maxwell - Santa Ana CA
William W. Miller - Santa Ana CA

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

G01N 2177

US Classification:

422 59

Abstract:

An apparatus for measuring the concentration of a component in a medium comprising: an optical sensor including at least one optical indicator for providing an optical signal which varies in response to the presence of a component in a medium; an optical signal fiber capable of transmitting the optical signal from the optical sensor; and a supply reservoir associated with the optical sensor and acting to provide additional optical indicator to the optical sensor.

US Patent:

20200240883, Jul 30, 2020

Filed:

Apr 15, 2020

Appl. No.:

16/849596

Inventors:

- Pacheco CA, US
Eric Andrew Warner - Oceanside CA, US
Saradha Avantsa - Concord CA, US
Hoa Thuong Nguyen - San Ramon CA, US
Smitha Sreedhar - San Jose CA, US
Thomas Marion Maxwell - Danville CA, US
Ziggy Q. Kotchetkov - Oakland CA, US
Kathlyn Leigh Rettig - Walnut Creek CA, US
Deidra Imani Jackson - Antioch CA, US
Ravishankar Melkote - Fremont CA, US
Zhiweng Chang - San Leandro CA, US
Maria Lourdes Teixeira - Pleasanton CA, US

Assignee:

Biocare Medical, LLC - Pacheco CA

International Classification:

G01N 1/31
G01N 1/36
G01N 35/10
G01N 1/30
G01N 35/00

Abstract:

This disclosure provides a biological sample processing system and methods for processing biological samples. The processing may include one or both of removing wax from wax-embedded biological samples and applying a reagent to biological samples. Aspects of the dewaxing technique and the technique for applying the reagent may be combined to achieve energy efficiencies. Additional efficiency may be achieved by recirculating heated reagent. A hybrid power system may use a source of stored power to supplement external power at times of peak demand. Uniform distribution of liquids across a surface of the biological samples may be achieved by self-leveling using an inclinometer.

US Patent:

20170315032, Nov 2, 2017

Filed:

Apr 28, 2017

Appl. No.:

15/582206

Inventors:

- Pacheco CA, US
Eric Andrew Warner - Oceanside CA, US
Saradha Avantsa - Concord CA, US
Hoa Thuong Nguyen - San Ramon CA, US
Smitha Sreedhar - San Jose CA, US
Thomas Marion Maxwell - Danville CA, US
Kathlyn Leigh Rettig - Walnut Creek CA, US
Deidra Imani Jackson - Antioch CA, US
Ravishankar Melkote - Fremont CA, US
Zhiweng Chang - San Leandro CA, US
Maria L. Lourdes Teixeira - Pleasanton CA, US

International Classification:

G01N 1/31
G01N 1/30
G01N 1/44
G01N 1/31

Abstract:

This disclosure provides a biological sample processing system and methods for processing biological samples. The processing may include one or both of removing wax from wax-embedded biological samples and applying a reagent to biological samples. Aspects of the dewaxing technique and the technique for applying the reagent may be combined to achieve energy efficiencies. Additional efficiency may be achieved by recirculating heated reagent. A hybrid power system may use a source of stored power to supplement external power at times of peak demand. Uniform distribution of liquids across a surface of the biological samples may be achieved by self-leveling using an inclinometer.