Patents by Inventor Medhanei Abraha

Medhanei Abraha 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).

  • Roofing Membrane Bond Indicator
    Publication number: 20230341276
    Abstract: A thermochromic indicator and its use for visually determining whether adjacent surfaces of overlapping edge portions of side-by-side roofing membrane segments have been sufficiently heated to a preselected temperature threshold to achieve a desired weld therebetween to correspondingly seal the roofing membrane seam.
    Type: Application
    Filed: February 5, 2021
    Publication date: October 26, 2023
    Applicant: Chromatic Technologies, Inc.
    Inventors: Timothy J. Owen, Ruizheng Wang, Medhanei Abraha
  • Thermochromic Temperature Sensor
    Publication number: 20200309607
    Abstract: A temperature sensor, and methods of making and using such a temperature sensor, whereby the temperature sensor includes a reversible thermochromic color-changing system having a dye, a developer, and a solvent. Upon exposure to a preselected temperature threshold, association or disassociation of the dye and the developer results in a visible color change. Further, the color-changing system includes a color-memory property which facilitates retention of the color change to effectively record exposure to the temperature threshold.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 1, 2020
    Applicant: Chromatic Technologies, Inc.
    Inventors: Lyle Small, Timothy J. Owen, Ruizheng Wang, Medhanei Abraha
  • Yellow thermochromic dyes, inks composition and level indicators
    Patent number: 9745487
    Abstract: A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: August 29, 2017
    Assignee: Chromatic Technologies, Inc.
    Inventors: Ruizheng Wang, Yu Du, Timothy J. Owen, Medhanei Abraha, Terrill Scott Clayton, Lyle Small
  • Red thermochromic dyes and their ink compositions
    Patent number: 9580603
    Abstract: A red leuco dye demonstrates unusually good thermal and photo stability. The red dye may be used with developers and wax carries for microencapsulation to form thermochromic pigments for use in inks, coatings and the like. This pigment is particularly desirable for use in metal-deco coatings, such as those used in aluminum cans in high beverage canning operations.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: February 28, 2017
    Assignee: Chromatic Technologies, Inc.
    Inventors: Ruizheng Wang, Medhanei Abraha, Yu Du, Ross Haugberg
  • Yellow Thermochromic Dyes, Inks Composition And Level Indicators
    Publication number: 20160333210
    Abstract: A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Applicant: Chromatic Technologies, Inc.
    Inventors: Ruizheng Wang, Yu Du, Timothy J. Owen, Medhanei Abraha, Terrill Scott Clayton, Lyle Small
  • Yellow thermochromic dyes, inks composition and level indicators
    Patent number: 9399716
    Abstract: A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: July 26, 2016
    Assignee: Chromatic Technologies Inc.
    Inventors: Ruizheng Wang, Yu Du, Timothy J. Owen, Medhanei Abraha, Terrill Scott Clayton, Lyle Small
  • Photochromic Compounds
    Publication number: 20160207903
    Abstract: Described are novel photochromic naphthopyran compounds which exhibit a red coloring when in a red-colored state achieved upon exposure to ultraviolet light, whereby the red coloring has a lambda max in a range of between about 490 nanometers to about 510 nanometers or between about 490 nanometers to about 500 nanometers.
    Type: Application
    Filed: January 18, 2016
    Publication date: July 21, 2016
    Applicant: Chromatic Technologies, Inc.
    Inventors: Qi Wang, Ruizheng Wang, Medhanei Abraha
  • RED THERMOCHROMIC DYES AND THEIR INK COMPOSITIONS
    Publication number: 20150090159
    Abstract: A red leuco dye demonstrates unusually good thermal and photo stability. The red dye may be used with developers and wax carries for microencapsulation to form thermochromic pigments for use in inks, coatings and the like. This pigment is particularly desirable for use in metal-deco coatings, such as those used in aluminum cans in high beverage canning operations.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Ruizheng Wang, Medhanei Abraha, Yu Du, Ross Haugberg
  • YELLOW THERMOCHROMIC DYES, INKS COMPOSITION AND LEVEL INDICATORS
    Publication number: 20150018441
    Abstract: A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Inventors: Ruizheng Wang, Yu Du, Timothy J. Owen, Medhanei Abraha, Terrill Scott Clayton, Lyle Small