Patents by Inventor Steven D. Anderson

Steven D. Anderson 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).

  • Publication number: 20110313403
    Abstract: A locking mechanism (15) for a catheter includes a main body (20), a tip (30), and a locking arm (50). The locking arm includes a pivotable portion (56) selectively receivable in a contoured outer surface portion of the main body (24). One end of a tubular member is engageable with the distal end of the tip, and the other end is insertable into a body cavity, e.g., for drainage of fluid therefrom. A tension member (14), e.g. suture, extends through the locking mechanism and the tubular member, and is actuable to maneuver the inserted end of the tubular member into a desired configuration, such as a loop or a pigtail (12). An end of the tension member is receivable along the main body contoured surface following actuation, and is lockable therein upon receipt of the locking arm pivotable portion in the contoured surface, thereby locking the tubular member end in the desired configuration.
    Type: Application
    Filed: November 12, 2009
    Publication date: December 22, 2011
    Inventors: Amy Lee Hruska, Geoffrey P. Grant, David R. Lessard, Steven D. Anderson, Michael W. Hardert
  • Patent number: 6207051
    Abstract: A portable hydraulic fluid handler cart capable of transporting liquid storage containers and providing filtered fluid transfer. Quick-disconnect couplers at the cart and system adapters, along with replaceable filter cartridges, maintain fluid integrity at the system and serviced equipment. An electric motor, transfer pump, retractable extension cord and power control switch mount to the cart. Forks, rails and an adjustable clamp contain a liquid drum to the cart. A pair of handles and four wheels facilitate gripping, tipping and transport of drum containers. A kickstand stabilizes the cart when used alone. The filter media at the cart and adapters is selected to simultaneously filter liquid-borne and airborne particles and water from the fluid.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: March 27, 2001
    Inventors: Steven D. Anderson, Kenneth R. Anderson, Nancy A. Faust
  • Patent number: 4851355
    Abstract: A method of analysis by high performance liquid chromatography is provided for obtaining an analysis of three components, namely acyclic paraffins, cycloparaffins and unsaturates, present in a liquid hydrocarbon mixture. The method comprises introducing a sample of the mixture to be analyzed into an unsaturates-selective column, passing the eluents from the unsaturates-selective column to a second column, eluting the separated components from the second column, detecting the presence of paraffins and naphthenes in the effluent from the second column, eluting the separated components from the unsaturates-selective column, and detecting the presence of unsaturates in the effluent from the unsaturates-selective column. The unsaturates-selective column is a silver-modified ion exchange column. The second column is a slurry packed column packed with a microparticulate material. The detector is a dielectric constant detector.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: July 25, 1989
    Inventors: Paul C. Hayes, Jr., Steven D. Anderson
  • Patent number: 4826603
    Abstract: This invention concerns analysis by high performance liquid chromatography HPLC) of crude oils and petroleum products.In one embodiment of the invention a sample is quantitatively separated into saturates, alkyl benzenes and polynuclear aromatics using a system comprising a column packed with a porous silica packing material having a polar amino-cyano bonded phase in tandem with a column packed with a tetranitrofluorenimino packing material, and a dielectric constant detector.In another embodiment of the invention a sample is qualitatively separated into saturates, olefins, and total aromatics using a system employing an olefin-selective column and a dielectric constant detector.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: May 2, 1989
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Paul C. Hayes, Jr., Steven D. Anderson
  • Patent number: 4802986
    Abstract: This invention concerns analysis by high performance liquid chromatography (HPLC) of crude oils and petroleum products.In one embodiment of the invention a sample is quantitatively separated into saturates, alkyl benzenes and polynuclear aromatics using a system comprising a column packed with a porous silica packing material having a polar amino-cyano bonded phase in tandem with a column packed with a tetranitrofluorenimino packing material, and a dielectric constant detector.In another embodiment of the invention a sample is qualitatively separated into saturates, olefins, and total aromatics using a system employing an olefin-selective column and a dielectric constant detector.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: February 7, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Paul C. Hayes, Jr., Steven D. Anderson
  • Patent number: D493593
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: July 27, 2004
    Inventor: Steven D. Anderson