Leonard Charles Buettner

6722182, Apr 20, 2004

Nov 8, 2001

10/005976

Leonard C. Buettner - Baltimore MD

The United States of America as represented by the Secretary of the Army - Washington DC

B01J 700

73 103, 73 106, 422305

A chemical adsorption system and method comprising an apparatus containing a solid adsorption article comprising a known amount of a chemical adsorbate material disposed on a solid adsorbent material. Trace amounts of the adsorbate are released from the adsorbent using an inert gas. By controlling various parameters such as the temperature of the adsorption article, the amount of the adsorbate on the adsorbent, and the flow rate of inert gas through the apparatus, the amount of chemical adsorbate material vapor that is released from the adsorbent can be precisely controlled and predicted. The apparatus contains no liquid chemical materials, and serves as both an internal chemical reference standard to the attached chemical vapor monitor and as a chemical surface passivator. Furthermore, the invention is capable of spanning several orders of magnitude in chemical vapor concentration from the parts-per-million (ppm) to parts-per-trillion (ppt) range.

8597579, Dec 3, 2013

Jan 20, 2011

13/010383

Leonard C. Buettner - Catonsville MD, US
Amanda L. Jenkens - Salisbury MD, US

The United States of America as Represented by the Secretary of the Army - Washington DC

G01N 15/06
G01N 33/00
G01N 33/48

422 83, 422 50, 422 88, 422 93, 422 98, 436 43

A molecularly imprinted polymer denuder sensor that includes a trapping solution; a delivery device transporting the trapping solution; a denuder operatively connected to the trapping solution and contacting ambient air, wherein the denuder infuses the sample into the trapping solution; a molecularly imprinted polymer sensor operatively connected to the denuder, wherein the MIP sensor captures and detects the threat material; an excitation source operatively connected to the MIP sensor and having an excitation band, wherein the excitation band excites europium (or other signal transducing lanthanide or metal ion) in the MIP when it is bound to the threat material providing unique emission band(s); and an analytical device operatively connected to the MIP sensor, wherein the analytical device senses the presence of the threat material in the sample.

46228527, Nov 18, 1986

Sep 6, 1985

6/772989

John T. James - Severn MD
Leonard C. Buettner - Baltimore MD
James A. Genovese - Edgewood MD

The United States of America as represented by the Secretary of the Army - Washington DC

G01N 1500

738656

A method and apparatus for testing a gas mask filter element comprising, ple supply means for supplying a test sample, a filter element box for containing a gas mask filter element, said element box having a sample inlet connected to said sample means for supplying a test sample to a filter element in the element box to form an effluent in the box, and an effluent outlet for discharging the effluent from the box. An inhalation chamber defining a space and having an effluent inlet connected to said effluent outlet for supplying effluent into said space, said inhalation chamber having a chamber outlet for discharging effluent from said space. At least one plethysmographic box connected to said inhalation chamber for receiving a test animal and having an opening communicating with said space through which the head of a test animal can pass into said inhalation chamber space. Respiration response means connected to said plethysmographic box for measuring a respiratory response of a test animal therein, and a breathing pump connected to said chamber outlet for drawing effluent from said inhalation chamber space in a manner which simulates human respiration.

H2550, Apr 7, 1987

Aug 26, 1986

6/900880

James A. Genovese - Forest Hill MD
John T. James - Severn MD
Leonard C. Buettner - Baltimore MD

The United States of America as represented by the Secretary of the Army - Washington DC

A61K 4900
G01N 3100
G01N 3348
G01N 3096

424 9

An apparatus and method for testing the performance of a sample charcoal orbent material. The apparatus comprises means for supplying a gaseous sample containing toxic contaminants to a filtering means. The filtering means includes a filter tube containing a sample charcoal adsorbent material for adsorbing the toxic contaminants. Chemical analysis means are included for detecting toxic contaminants remaining in the gaseous effluent from the filtering means. Test animal chambers are also provided for exposing test animals contained therein to the gaseous effluent to determine the toxic effects and breathing rate changes on the test animals caused by toxic or irritating contaminants remaining in the gaseous effluent.