Patents by Inventor Richard L. Rullman

Richard L. Rullman 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).

  • Simulated vehicle alarm
    Patent number: 5856777
    Abstract: A simulated vehicle alarm including a housing formed of an electrically insulative material. A light-emitting diode is secured to the housing. A pair of electrically conductive leads are connected to the light-emitting diode and extend therefrom. A pair of electrical connectors are attached, respectively, to the free ends of the leads. Each of the connectors includes a strip of metallic foil having an adhesive layer applied to one of its sides. A strip of double-sided foam tape is secured to the housing for adhesively mounting the housing upon a supporting surface such as a vehicle windshield.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: January 5, 1999
    Inventors: Richard L. Rullman, Peter C. Rullman
  • Method of preparing a thromboplastin extract
    Patent number: 5512304
    Abstract: A thromboplastin extract including an aqueous thromboplastin extract of a powdered thromboplastin source including a metal ion chelator. A thromboplastin reagent for use in blood coagulation tests, the thromboplastin reagent includes the extract and calcium ions, and may include one or more of a stabilizer and a preservative.A process for preparing a thromboplastin extract including extracting a powdered thromboplastin source in an aqueous solution having a metal ion chelator, and separating the powder in solution into sedimented powder and supernatant thromboplastin extract. The supernatant thromboplastin extract is mixed with calcium ions, and may be mixed with one or more of a stabilizer and a preservative, to prepare thromboplastin reagent.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: April 30, 1996
    Assignee: Helena Laboratories Corporation
    Inventors: David A. Barrow, Richard L. Rullman
  • Thromboplastin extract, reagent, and preparation thereof
    Patent number: 5391380
    Abstract: A thromboplastin extract including an aqueous thromboplastin extract of a powdered thromboplastin source including a metal ion chelator. A thromboplastin reagent for use in blood coagulation tests, the thromboplastin reagent includes the extract and calcium ions, and may include one or more of a stabilizer and a preservative.A process for preparing a thromboplastin extract including extracting a powdered thromboplastin source in an aqueous solution having a metal ion chelator, and separating the powder in solution into sedimented powder and supernatant thromboplastin extract. The supernatant thromboplastin extract is mixed with calcium ions, and may be mixed with one or more of a stabilizer and a preservative, to prepare thromboplastin reagent.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: February 21, 1995
    Assignee: Helena Laboratories, Corp.
    Inventors: David A. Barrow, Richard L. Rullman
  • Method of preparing a thromboplastin extract
    Patent number: 5254350
    Abstract: A process for preparing a thromboplastin extract including extracting a powdered thromboplastin source in an aqueous solution having a metal ion chelator, and separating the powder in solution into sedimented powder and supernatant thromboplastin extract is disclosed. The supernatant thromboplastin extract is mixed with calcium ions, and may be mixed with one or more of a stabilizer and a preservative, to prepare thromboplastin reagent.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: October 19, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: David A. Barrow, Richard L. Rullman