Patents by Inventor Michael J. Steuck

Michael J. Steuck 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).

  • Porous membrane having hydrophilic and cell growth promotions surface and process
    Patent number: 5037656
    Abstract: A composite, porous membrane is formed from a porous polymer membrane having desired bulk properties on which is directly coated a cell attachment and/or growth promoting composition and a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane. In one embodiment, when the substrate is polytetrafluoroethylene the composite is microscopically transparent.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: August 6, 1991
    Assignee: Millipore Corporation
    Inventors: Aldo M. Pitt, Michael J. Steuck
  • Membranes for solid phase protein sequencing
    Patent number: 5011861
    Abstract: A membrane suitable for immobilizing peptides and proteins is disclosed. The membrane is a flexible, polymeric, porous membrane which contains functional groups capable of covalently linking the peptides and proteins. The functional groups can be provided by reacting the membrane itself or a coating thereon with nucleophiles which provide --NH.sub.2, --SH, --OH or --COOH functionality to the membrane surface. Additionally, surfaces containing --NH.sub.2 groups can be further reacted with diisothiocyantes to provide an isothiocyanate functionality having enhanced covalent binding characteristics.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: April 30, 1991
    Assignee: Millipore Corporation
    Inventors: James M. Coull, Darryl J. Rappin, Hubert Koester, Malcolm G. Pluskal, Michael J. Steuck, Alex G. Bonner
  • Charge-modified hydrophobic membrane materials and method for making the same
    Patent number: 5004543
    Abstract: A hydrophobic material having a crosslinked, cationic charge-modifying coating such that the majority of the ion exchange capacity of the material is provided by fixed formal positive charge groups is disclosed. The material is produced by contacting a hydrophobic substrate with a mildly alkaline, aqueous organic solvent solution into which has been dissolved a cationic charge-modifying agent. The charge-modifying agent comprises a water soluble, organic polymer having a molecular weight of greater than about 1000, wherein the polymer chain contains both fixed formal positive charge groups and halohydrin groups.Materials of the type described herein can be used in a variety of applications including macromolecular blotting and filtration.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: April 2, 1991
    Assignee: Millipore Corporation
    Inventors: Malcolm G. Pluskal, David Wang, Michael J. Steuck
  • Membrane having hydrophilic surface
    Patent number: 4944879
    Abstract: A composite porous membrane is formed from a porous polymeric membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane. The cross-linked surface polymer is produced from a crosslinkable monomer or polymer by energy from an electron beam in the absence of a chemical polymerization initiator.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: July 31, 1990
    Assignee: Millipore Corporation
    Inventor: Michael J. Steuck
  • Transparent porous membrane having hydrophilic surface and process
    Patent number: 4917793
    Abstract: A composite, microscopically transparent, porous membrane is formed from a porous polytetrafluoroethylene membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: April 17, 1990
    Inventors: Aldo M. Pitt, Michael J. Steuck
  • Transparent porous membrane having hydrophilic surface and process
    Patent number: 4908236
    Abstract: A composite, microscopically transparent, porous membrane is formed from a porous polytetrafluoroethylene membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: March 13, 1990
    Assignee: Millipore Corporation
    Inventors: Aldo M. Pitt, Michael J. Steuck
  • Porous membrane having hydrophilic surface and process
    Patent number: 4618533
    Abstract: A composite porous membrane is formed from a porous polymeric membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composites membrane retains the porosity of the porous polymeric membrane. A preferred composite porous membrane is formed from a porous polyvinylidene fluoride to which is directly coated with a polymer formed of a cross-linked hydroxyalkyl acrylate.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: October 21, 1986
    Assignee: Millipore Corporation
    Inventor: Michael J. Steuck