As chemical engineers and chemists, we make time to publish, patent, and educate.

We hold 38 current patents spanning a broad range of industries, such as:  polymer process engineering and fiber technology and have published 22 papers for respected chemical engineering and polymer science journals. All of us at HRC enjoy being an active part of the science community.

our published journal articles 

Z. Shen, G. S. Huvard, C. Shawn Warriner, M. McHugh, J. L. Banyasz, and M. K. Mishra, Polymer, 49, 1579 (2008). "CO2-assisted fiber impregnation."

G. E. Simmonds, J. D. Bomberger, and M. A. Bryner, "Designing Nonwovens to Meet Pore Size Specifications," Journal of Engineered Fibers and Fabrics, 2, 1 (2007).

N. W. Gonzalez, T. E. Bernard, N. L. Carroll, M. A. Bryner, and J. P. Zeigler, "Maximum Sustainable Work Rate for Five Protective Clothing Ensembles with Respect to Moisture Vapor Transmission Rate and Air Permeability," Journal of Occupational and Environmental Hygiene, 3, 80 (2006).

T. M. Cameron, R. S. Hobson, and G. S. Huvard, "A Multidisciplinary Dynamic Systems Curriculum,"ASEE Symposium Proceedings, ASEE National Meeting, Nashville, Tennessee (2003).

G. S. Huvard, G. Wnek, B. Crosby, N. Cain, J. McLees, and J. Bara, "ChemEngine: Realizing Entrepreneurship in Undergraduate Engineering Education," ASEE Symposium Proceedings, ASEE National Meeting, Albuquerque, New Mexico (2001).

L. R. Marshall, "The 'Evolution' of a Spunbonded Nonwoven for Filtration Applications," Filtration Conference, Chicago, Illinois (2000).

J. Falconer and G. S. Huvard, "Important Concepts in Undergraduate Kinetics and Reactor Design Courses," Chemical Engineering Education, 33, 138 (1999).

G. S. Huvard, "Make summer internship a learning experience," Chemical Engineering Education, 32, 48 (1998).

G. S. Huvard and E. Eller, "Estimating Model Parameters with HiQ," Scientific Computing and Automation, February 31 (1995).

G. S. Huvard and R. M. Felder, "Technical Training: Hit the Ground Running." Chemical Engineering, 100, 133 (1993).

A. R. Berens, G. S. Huvard, R. W. Korsmeyer, and F. W. Kunig, "Application of Compressed Carbon Dioxide in the Incorporation of Additives Into Polymers," Journal of Applied Polymer Science, 46, 231 (1992).

A. R. Berens and G. S. Huvard, "Interactions of Polymers with Near-critical Carbon Dioxide," Chapter 14 of Supercritical Fluid Science and Technology, ACS Symposium Series #406, edited by K. Johnston and J. Penninger, ACS, Washington, DC (1989).

L. R. Marshall, "Behavioral Features of Turbulent Jets Impinging Upon a Wall," Forum on Industrial Fluid Mechanics, ASME Winter Annual Meeting, Chicago, Illinois (1989).

G. S. Huvard, P. P. Nicholas, and S. E. Horne, Jr., "Kinetics and Mechanism for the Phase Transfer Catalyzed Cycloaddition of Dichlorocarbene to cis-1,4-Polybutadiene," Journal of Polymer Science, Polymer Chemistry, 23, 2005 (1985).

I. M. Hodge and G. S. Huvard, "Effects of Annealing and Prior History on Enthalpy Relaxation in Glassy Polymers III: Predictions for Polystyrene from Analysis of a Single Thermal History,"Macromolecules, 16, 371 (1983).

A. R. Berens and G. S. Huvard, "Particle Size Distribution of Polymers by Analysis of Sorption Kinetics," Journal of Dispersion Science and Technology, 2, 359 (1981).

G. S. Huvard, V. T. Stannett, W. J. Koros, and H. B. Hopfenberg, "The Pressure Dependence of Carbon Dioxide Sorption and Permeation in Poly(acrylonitrile)," Journal of Membrane Science, 6, 185 (1980).

W. J. Koros, D. R. Paul, and G. S. Huvard, "Energetics of Gas Sorption in Glassy Polymers,"POLYMER, 20, 956 (1979).

L. R. Marshall, "Wave Induced Instabilities of Semi-Submersible Oil Drilling Platforms," Symposium on Fluid Mechanics in the Petroleum Industry, ASME Winter Annual Meeting, Houston, Texas (1975).

A. H. Nayfeh, D. T. Mook, and L. R. Marshall, "Perturbation-Energy Approach for the Development of the Nonlinear Equations of Ship Motion," Journal of Hydronautics, 8, 130 (1974).

A. H. Nayfeh, D. T. Mook, and L. R. Marshall, "Subharmonic and Superharmonic Resonances in the Pitch and Roll Modes of Ship Motions," Journal of Hydronautics, 8, 32 (1974).

A. H. Nayfeh, D. T. Mook, and L. R. Marshall, "Nonlinear Coupling of Pitch and Roll Modes in Ship Motions," Journal of Hydronautics, 7, 145 (1973).

Our current patents

L. R. Marshall, M. A. Bryner, and G. S. Huvard, U.S. Patent 8,808,594 B1 (2014). "Coform Fibrous Materials and Method for Making Same." 

J. E. Armantrout, T. Huang, L. R. Marshall, J. R. Moore, and N. Pfeiffenberger, U.S. Patent 8,303,874 (2012). "Solution spun fiber process."

T. Huang, L. R. Marshall, J. E. Armantrout, S. Yembrick, W. H. Dunn, J. M. OConnor, T. Mueller, M. Avgousti, and M. D. Wetzel, U.S. Patent 8,277,271 (2012). "Production of nanofibers by melt spinning."

G. S. Huvard, K. W. Ward, and R.P. Imbruce, U.S. Patent 8,147,760 (2012). "Portable chemical oxygen generator."

J. E. Armantrout, R. A. Marin, and L. R. Marshall, U.S. Patent 8,114,325 (2012). "Process for forming uniformly distributed material."

R. A. Marin, L. R. Marshall, and B. K. O'Rourke, U.S. Patent 8,048,513 (2011). "Flash-spun sheet material."

R. A. Marin, L. R. Marshall, and A. D. Miller, U.S. Patent 7,998,388 (2011). "Rotary process for forming uniform material."

M. McHugh, Z. Shen, D. Gee, G. Karles, J. Nepomuceno, and G. Huvard, U.S. Patent 7,935,298 (2011). "Method of producing fibers by electrospinning at high pressures."

M. A. Bryner, J. E. Armantrout, and B. S. Johnson, U.S. Patent 7,931,456 (2011). "Electroblowing web formation."

J. E. Armantrout, L. E. Manring, R. A. Marin, and L. R. Marshall, U.S. Patent 7,786,034 (2010)."Rotary process for forming uniform material."

R. A. Marin, L. R. Marshall, and B. K. O'Rourke, U.S. Patent 7,744,989 (2010). "Flash-spun sheet material."

J. E. Armantrout, J. E. Armstrong, B. S. Johnson, and M. A. Bryner, E.P. Patent 1,834,020 (2010)."Improved electoblowing web formation process."

J. E. Armantrout, M. A. Bryner, and C. B. Spiers, E.U. Patent 1,915,474 (2010). "Improved electoblowing fiber spinning process."

J. E. Armantrout, L. E. Manring, R. A. Marin, and L. R. Marshall, U.S. Patent 7,621,731 B2 (2009)."Rotary process for forming uniform material."

M. A. Bryner, J. E. Armantrout, J. E. Armstrong, and B. S. Johnson, U.S. Patent 7,585,451 (2009)."Electoblowing web formation process."

J. E. Armantrout, M. A. Bryner, and C. B. Spiers, U.S. Patent 7,582,247 (2009). "Electoblowing fiber spinning process."

R. A. Marin, L. R. Marshall, and A. D. Miller, U.S. Patent 7,582,240 B2 (2009). "Rotary process for forming uniform material."

M. A. Bryner, E.U. Patent 1,540,062 (2009). "Extremely high liquid barrier fabrics."

J. E. Armantrout, B. S. Johnson, C. A. Rude, and M. A. Bryner, U.S. Patent 7,465,159 (2008). "Fiber charging apparatus."

M. A. Bryner, J. B. Havonec, D. C. Jones, H. S. Lim, and B. L. Wiseman, U.S. Patent 7,235,122 (2007). "Filtration media for filtering particulate material from gas streams."

J. E. Armantrout, L. E. Manring, R. A. Marin, and L. R. Marshall, U.S. Patent 7,118,698 (2006)."Rotary process for forming uniform material."

J. R. Waggoner, M. Stachnik, T. A. Weston, and M. A. Bryner, U.S. Patent 6,355,333 (2002)."Construction membrane."

M. A. Bryner, D. M. Coates, M. C. Davis, T. E. Estep, R. A. Franke, L. R. Marshall, S. K. Nath, and C. W. Starke, Sr., E.P. Patent 5,788,993 (2002). "Spinneret for flash spinning."

H. S. Lim, L. R. Marshall, W. Nobbee, and J. M. Warren, U.S. Patent 6,034,008 (2000). "Flash-spun sheet material."

H. Shin, J. R. Waggoner, S. L. Samuels, M. A. Bryner, and R. F. Janis, E.U. Patent 0,877,835 (2000)."Fibers flash-spun from blends of polyolefin polymers."

H. Shin, J. R. Waggoner, S. L. Samuels, M. A. Bryner, and R. F. Janis, U.S. Patent 6,004,672 (1999)."Fibers flash-spun from blends of polyolefin polymers."

R. A. Franke, H. S. Lim, L. R. Marshall, M. P. Milone, R. G. Raty, and A. G. Vaidyanathan, U.S. Patent 5,863,639 (1999). "Nonwoven sheet products made from plexifilamentary film fibril webs."

L. R. Marshall, U.S. Patent 5,851,936 (1998). "Elongation for flash spun products."

R. A. Franke, H. S. Lim, and L. R. Marshall, U.S. Patent 5,833,900 (1998). "Process for modifying porosity in sheet made from flash spinning olefin polymer."

M. A. Bryner, D. M. Coates, M. C. Davis, T. E. Estep, R. A. Franke, L. R. Marshall, S. K. Nath, and C. W. Starke, Sr., U.S. Patent 5,788,993 (1998). "Spinneret with slotted outlet."

R. C. Agreen, W. E. Billings, R. A. Marin, J. F. Woll, O. Niederpruem, and M. A. Bryner, U.S. Patent 5,731,011 (1998). "Apparatus for forming a fibrous sheet."

G. S. Huvard and A. D. Lobo, U.S. Patent 5,378,300 (1995). "Method for removing labels adhered to diskette and de-labeling means for doing so."

M. C. Davis and M. A. Bryner, U.S. Patent 5,296,172 (1994). "Electrostatic field enhancing process and apparatus for improved web pin."

L. R. Marshall, U.S. Patent 5,123,983 (1992). "Gas management system for closely-spaced laydown jets."

G. S. Huvard, D. M. Coates, and H. Shin, U.S. Patent 5,043,109 (1991). "Process for flash-spinning dry polymeric plexifilamentary film-fibril strands."

A. R. Berens, G. S. Huvard, and R. W. Korsmeyer, U.S. Patent 4,820,752 (1989). "Process for incorporating an additive into a polymer and product produced thereby."

V. Percec, G. S. Huvard, F.L. Ramp, and L. Traynor, U.S. Patent 4,663,402 (1987). "Non-catalytic process for the preparation of difunctionalized polyarylene polyethers."

L. R. Marshall, U.S. Patent 4,352,650 (1982). "Nozzle for flash-extrusion apparatus."

Our Short Courses and books

Gary S. Huvard and Richard M. Felder. Student Workbook to Accompany Elementary Principles of Chemical Processes. Wiley, New York (2005).

E. A Grulke and G.S. Huvard, "Devolatilization of Fibers, Latices, and Particles," Chapter 17 of Polymer Devolatilization. R. J. Albalak, edl, Marcel Dekker, New York (1996).

Larry R. Marshall. Creativity and Successful Innovation. Charleston, South Carolina (2010).

R. M. Felder and G. S. Huvard, "Permeation, Diffusion, and Sorption of Gases and Vapors," Chapter 17 of Methods and Experimental Physics: Part C: Polymer Physics. R. A. Fava, Ed., Academic Press, New York, (1980).