John B. Desjardins

294 Whalom Rd.  Lunenburg, MA 01462

(978) 343-0466  desjardinsJ@rcn.com


Profile: An experienced leader in product development with broad knowledge of creative solutions to your difficult technical problems.   

Expertise in: 

Professional Experience

Principal Engineer,                                                                    Guilfoyle Inc., Belmont, MA,  1995 – 2004

Developed the Bio-Ferrograph.  An instrument an instrument that captures cancer cells from blood in an array for researchers.  Cells are captured on a glass substrate by processing a blood sample with magnetizing solutions that preferentially bind to selected cell subpopulations and then flowing the sample over a high gradient magnetic field.   

The Bio-Ferrograph captured cancer cells from volunteers’ blood at multiple sites, and in proof of concept testing was capable of capturing 1 cell of the desired type from a million background cells.  Other areas where the Bio-Ferrograph excelled were tracking bacterial movement through ground water, and the study of wear in artificial hip joints.   

Components developed include a multi channel fluid flow cell, magnet assembly, consumables, assorted fixtures and clamping devices; gaskets and sheet metal enclosures incorporating electronic components.   Responsibilities included preparation of concept through detail drawings on a CAD system, modeling of flow parameters, magnetic fields, stress and strain, testing of components, presentations to customers and documentation of the finished product. Named as inventor on three patents. 

 

Research & Development Engineer,                                Analyst Inc., Research Division, Belmont, MA 1991-1995

Developed a Light Extinction Measurement (LEM) for the amount of soot in a diesel engines lubricating oil.  LEM was named the outstanding product for analysis and testing by Lubricant World in 1996.  Soot in diesel lubricating oil in high concentrations is indicative of poor combustion, changes the Newtonian characteristics of the oil and contributes to excessive wear of the engine.  LEM measures the amount of soot in diesel lubricating oil more accurately than any other method available, while only costing 7% of the next most accurate test.

Named as an inventor on US patent number 5,309,213 granted on the method used to measure soot in lubricating oil.  Supported the introduction of LEM to the marketplace by preparing and presenting technical papers and training users.  Planned and conducted research projects. 

Engineer,                                                                                        Institute Guilfoyle, Belmont, MA   1988-1991 

Analyzed Ferrograms, made by passing a dilute oil sample over a high gradient magnet field to precipitate particulate out of the oil onto a glass substrate.  Researched methods of quantifying deposits on Ferrograms.   Began research into methods of measuring soot in diesel lubricating oil, a product line that was purchased in 1991 by Analysts Incorporated.  

 

Education:       

 

University of Connecticut                                                                              Storrs, CT

Bachelor of Science in Engineering, dual major in Mechanical Engineering and Material Sciences

Hartford State Technical College                                                                    Hartford, CT

Associates of Science in Mechanical Engineering, Machine Design,  Graduated with honors

 

References, Patents and Publications  available upon request.