Patents by Inventor David J. Stevens

David J. Stevens 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: 20240065998
    Abstract: Oil compositions and compositions thereof that can form nanoemulsions or microemulsions are disclosed. Such compositions and compositions thereof can be useful for antimicrobial properties and be used to treat or prevent microbial infections.
    Type: Application
    Filed: October 12, 2023
    Publication date: February 29, 2024
    Inventors: Daniel J. MONTICELLO, Nathaniel Scott SCHOCKER, David Michael STEVENS
  • Patent number: 6877543
    Abstract: A sealing assembly (10) for sealing flexible packaging materials comprising: a sealing mechanism for sealing the packaging material; and a spreading mechanism for spreading the packaging material to be sealed prior to sealing, the spreading mechanism including at least two pair of opposed spreading members (15a, 15b), each pair having opposing converging contact edges (17a, 17b) which engage either side of the packaging material during spreading; wherein the spreading members are mounted for relative movement between a first open orientation and a second closed orientation such that, as the spreading members travel from said first to said second orientation, the contact edges initially contact the packaging material at convergent ends of the contact edges and then proceed to contact the packaging material along the length of the contact edges to divergent ends thereof, and wherein subsequently or simultaneously the spreading members engage the packaging material between the contact edges and travel transverse
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 12, 2005
    Assignee: Cryovac Australia Pty. Ltd.
    Inventor: David J. Stevens
  • Publication number: 20040068958
    Abstract: A sealing assembly (10) for sealing flexible packaging materials comprising: a sealing mechanism for sealing the packaging material; and a spreading mechanism for spreading the packaging material to be sealed prior to sealing, the spreading mechanism including at least two pair of opposed spreading members (15a, 15b), each pair having opposing converging contact edges (17a, 17b) which engage either side of the packaging material during spreading; wherein the spreading members are mounted for relative movement between a first open orientation and a second closed orientation such that, as the spreading members travel from said first to said second orientation, the contact edges initially contact the packaging material at convergent ends of the contact edges and then proceed to contact the packaging material along the length of the contact edges to divergent ends thereof, and wherein subsequently or simultaneously the spreading members engage the packaging material between the contact edges and travel transverse
    Type: Application
    Filed: September 25, 2003
    Publication date: April 15, 2004
    Inventor: David J. Stevens
  • Patent number: 6595102
    Abstract: A counter-terrorism, reactive personnel protection system which detects the presence of a destructive object as it approaches a designated personnel target along an intersecting path. Before impact, an air bag is rapidly inflated and interposed between the destructive object and the target so as to provide a protective barrier. The air bag is constructed from polyethylene material or other anti-ballistic materials, and serves to halt or redirect the detected destructive force of the object and thereby protect the designated target from attack.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 22, 2003
    Assignee: Southwest Research Institute
    Inventors: David J. Stevens, Kirk A. Marchand, Thomas J. Warnagiris
  • Publication number: 20020152881
    Abstract: A counter-terrorism, reactive personnel protection system which detects the presence of a destructive object as it approaches a designated personnel target along an intersecting path. Before impact, an air bag is rapidly inflated and interposed between the destructive object and the target so as to provide a protective barrier. The air bag is constructed from polyethylene material or other anti-ballistic materials, and serves to halt or redirect the detected destructive force of the object and thereby protect the designated target from attack.
    Type: Application
    Filed: May 16, 2002
    Publication date: October 24, 2002
    Applicant: Southwest Research Institute
    Inventors: David J. Stevens, Kirk A. Marchand, Thomas J. Warnagiris
  • Patent number: 6412391
    Abstract: A counter-terrorism, reactive personnel protection system which detects the presence of a destructive object as it approaches a designated personnel target along an intersecting path. Before impact, an air bag is rapidly inflated and interposed between the destructive object and the target so as to provide a protective barrier. The air bag is constructed from polyethylene material or other anti-ballistic materials, and serves to halt or redirect the detected destructive force of the object and thereby protect the designated target from attack.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: July 2, 2002
    Assignee: Southwest Research Institute
    Inventors: David J. Stevens, Kirk A. Marchand, Thomas J. Warnagiris
  • Patent number: 6029558
    Abstract: A counter-terrorism, reactive personnel protection system which detects the presence of a concussive shock wave or ballistic projectile as it approaches a designated personnel target. Before impact, an air bag is rapidly inflated and interposed between the destructive force and the target so as to provide a protective barrier. The air bag is constructed from ultra-high molecular weight polyethylene material, and serves to halt or redirect the detected destructive force and thereby protect the designated target from attack.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: February 29, 2000
    Assignee: Southwest Research Institute
    Inventors: David J. Stevens, Kirk A. Marchand, Thomas J. Warnagiris
  • Patent number: 5490661
    Abstract: The present invention is directed to a quick release coupling, a displacement sensor, and an electronic monitoring unit. The displacement sensor is mounted near the end of the guardrail for measuring the force of a vehicle impact. The electronic monitoring unit is connected to the sensor and measures the acceleration of the impact and provides an actuation signal when the acceleration exceeds a predetermined value. The quick release coupling forms a connection between two separated portions of the guard rail and includes an explosively actuated release mechanism actuated by the monitoring unit.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: February 13, 1996
    Assignee: Southwest Research Institute
    Inventors: David J. Stevens, Joseph B. Mayer, Jr., Kirk A. Marchand