Patents by Inventor John Semler

John Semler 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).

  • Ingestible pressure sensing capsule
    Publication number: 20070129703
    Abstract: An improved capsule (15) for sensing a contractual force within a mammalian tract, comprising a shell (16), a flexible sleeve (17) affixed to the shell and defining a chamber (19) between the shell and the sleeve, and a pressure sensor (18) operatively arranged to sense pressure within the chamber, whereby a contraction force on the outside of the sleeve produces a corresponding pressure change within the chamber. The chamber may contain a fluid (22) and the fluid may be mineral oil.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 7, 2007
    Inventors: David D'Andrea, Laura Negron, John Semler
  • Sensitizer for heat sensitive paper coatings
    Patent number: 5066633
    Abstract: A heat sensitive coating has a colorless or light colored leuco dye precursor, preferably having a five-membered spirol lactone ring at one end of the molecule, and a tertiary amino group at another end of the molecule, and a developer. Sensitizers which increase the heat sensitivity of these dye precursors, and compositions of sensitized dye/developer systems are disclosed. The sensitizers are .gamma.-substituted lactones, 3-naphthylmethylidenephthalide, and derivatives of benzalphthalide.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: November 19, 1991
    Assignee: Graphic Controls Corporation
    Inventors: Tomoo Shibata, John Semler, George Gaesser