Patents by Inventor Mark A. Stone

Mark A. Stone has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11479933
    Abstract: Vehicle impact barrier system (300) comprising a series of impact barrier units (310) and at least one linkage means (332). A first impact barrier unit is linked to at least one other impact barrier unit by said at least one linkage means.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: October 25, 2022
    Inventor: Mark A. Stone
  • Patent number: 10786755
    Abstract: Low-retention pre-columns that allow increased injection volumes of solvents chromatographically stronger than the mobile phase and use of solvents with limited solubility in the mobile phase, such as ethyl acetate and MTBE. The system and method also reduces band broadening due to the extra-column effects acting upstream of the analytical column, including band broadening due to the injection process and due to the connecting tubing and fittings between the injection system and the column. A pre-column may also be used as a guard column, thereby minimizing band broadening due to the guard column.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: September 29, 2020
    Inventor: Mark A. Stone
  • Publication number: 20200199834
    Abstract: Vehicle impact barrier system (300) comprising a series of impact barrier units (310) and at least one linkage means (332). A first impact barrier unit is linked to at least one other impact barrier unit by said at least one linkage means.
    Type: Application
    Filed: May 10, 2018
    Publication date: June 25, 2020
    Inventor: Mark A. Stone
  • Publication number: 20180236377
    Abstract: A method of applying microwave radiation to a chromatography column to achieve turbulent chromatography, increase the speed of column equilibration following a change of mobile phase, facilitate faster mixing of fluids, reduce the viscosity of fluids, and apply temperature pulses to selected time segments of a separation. The method may be used in conjunction with the use of columns packed with fused-core particles or monolithic columns. Improved size-based separations may be achieved using diffusion-and-turbulent-dependent size exclusion chromatography.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 23, 2018
    Inventor: Mark A. Stone
  • Patent number: 9804133
    Abstract: A method and apparatus for enabling larger injection volumes and for reducing extra column effects in chromatographic separations using focusing pre-columns placed upstream of the analytical, or preparative, column with applications in any chromatographic system where the requirement is that the focusing pre-column, placed upstream of the analytical column, allows larger injection volumes to be utilized and, by enabling efficient focusing of solutes onto the analytical column, results in a significant reduction of band broadening due to extra-column effects which act upstream of the analytical column.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 31, 2017
    Inventor: Mark A. Stone
  • Publication number: 20170173496
    Abstract: Low-retention pre-columns that allow increased injection volumes of solvents chromatographically stronger than the mobile phase and use of solvents with limited solubility in the mobile phase, such as ethyl acetate and MTBE. The system and method also reduces band broadening due to the extra-column effects acting upstream of the analytical column, including band broadening due to the injection process and due to the connecting tubing and fittings between the injection system and the column. A pre-column may also be used as a guard column, thereby minimizing band broadening due to the guard column.
    Type: Application
    Filed: January 6, 2017
    Publication date: June 22, 2017
    Inventor: Mark A. Stone
  • Patent number: 6630354
    Abstract: A method of using microwave-induced dielectric polarization to enhance the diffusivity of a liquid or a supercritical fluid mobile phase in chromatography, while having essentially no effect on other physical properties of the mobile phase.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: October 7, 2003
    Inventor: Mark A. Stone
  • Publication number: 20030109053
    Abstract: A method of using microwave-induced dielectric polarization to enhance the diffusivity of a liquid or a supercritical fluid mobile phase in chromatography, while having essentially no effect on other physical properties of the mobile phase.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 12, 2003
    Inventor: Mark A. Stone
  • Patent number: 5611453
    Abstract: A vessel for containing or conveying a fluid comprises a wall having at least an inner layer adapted to be adjacent to or in contact with the fluid and an outer layer, each layer being comprised of a matrix of polymeric material, the polymeric materials of the inner and outer layers being differently constituted. The two layers are bonded together and the polymeric material of the inner layer has a coefficient of shrinkage during curing which is less than the co-efficient of shrinkage of the resin material in the outer layer so that the inner layer of the wall has a post-curing residual compressive stress induced therein by the outer layer. The invention extends to a method of forming a multi-layered polymeric vessel.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: March 18, 1997
    Inventors: Ian F. Schwartz, Mark A. Stone
  • Patent number: D768799
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: October 11, 2016
    Assignee: 3D Custom Tech LLC
    Inventor: Mark A. Stone