Patents by Inventor Heidi THOMAS

Heidi THOMAS 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).

  • Method for activating and deactivating the phosphorescence of a structure, method for producing a phosphorescent structure and phosphorescent structure, label with phosphorescent structure, method for writing, reading and erasing a label, and a UV sensor
    Patent number: 11859115
    Abstract: A method for activating and/or deactivating the phosphorescence of a structure is disclosed. The structure may include a first and a second material, wherein a phosphor is admixed with the first material and oxygen is present in the region of the phosphor. The second material may be oxygen-impermeable at an ambient temperature and, in the oxygen-impermeable state, act as an oxygen barrier between the first material and a surrounding environment. To activate the phosphorescence, in a first activation step, oxygen present in the structure is photochemically deactivated by irradiating the structure with light of a first characteristic, and, in a second activation step, the phosphorescence is activated by irradiating the structure with light of a second characteristic. To deactivate the phosphorescence, oxygen is introduced into the structure by heating the structure and/or by irradiating the structure with light of a third characteristic.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: January 2, 2024
    Inventors: Max Gmelch, Heidi Thomas, Sebastian Reineke, Felix Simon Fries, Paul-Anton Will
  • METHOD FOR ACTIVATING AND DEACTIVATING THE PHOSPHORESCENCE OF A STRUCTURE, METHOD FOR PRODUCING A PHOSPHORESCENT STRUCTURE AND PHOSPHORESCENT STRUCTURE, LABEL WITH PHOSPHORESCENT STRUCTURE, METHOD FOR WRITING, READING AND ERASING A LABEL, AND A UV SENSOR
    Publication number: 20210261859
    Abstract: A method for activating and/or deactivating the phosphorescence of a structure is disclosed. The structure may include a first and a second material, wherein a phosphor is admixed with the first material and oxygen is present in the region of the phosphor. The second material may be oxygen-impermeable at an ambient temperature and, in the oxygen-impermeable state, act as an oxygen barrier between the first material and a surrounding environment. To activate the phosphorescence, in a first activation step, oxygen present in the structure is photochemically deactivated by irradiating the structure with light of a first characteristic, and, in a second activation step, the phosphorescence is activated by irradiating the structure with light of a second characteristic. To deactivate the phosphorescence, oxygen is introduced into the structure by heating the structure and/or by irradiating the structure with light of a third characteristic.
    Type: Application
    Filed: August 23, 2019
    Publication date: August 26, 2021
    Inventors: Max GMELCH, Heidi THOMAS, Sebastian REINEKE, Felix Simon Fries, Paul-Anton WILL