Patents by Inventor Calvin T. Liu

Calvin T. Liu 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: 20240059079
    Abstract: A printer can operate as a recycling device by drawing used paper, and printing over the printed portions of the used paper with coloring (e.g., toner or ink) that matches the color of the used paper.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 22, 2024
    Inventor: Calvin T. Liu
  • Patent number: 10967529
    Abstract: A dual scissor with lifter device for cutting out a pizza slice and lifting the pizza slice is provided herein. The dual scissor with lifter can comprise several parts. It can comprise a first scissor, a second scissor, and a lifter piece 115. The first scissor and the second scissor can be attached to the lifter piece. The first scissor and the second scissor can be used to cut out, for example, a slice of pizza (or pie, cheesecake, pastries, breads, and other flat-like circular foods), from the whole pizza. The lifter piece can be used to support and lift the slice of pizza after the slice has been cut by the first scissor and the second scissor.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: April 6, 2021
    Inventor: Calvin T. Liu
  • Publication number: 20190337170
    Abstract: A dual scissor with lifter device for cutting out a pizza slice and lifting the pizza slice is provided herein. The dual scissor with lifter can comprise several parts. It can comprise a first scissor, a second scissor, and a lifter piece 115. The first scissor and the second scissor can be attached to the lifter piece. The first scissor and the second scissor can be used to cut out, for example, a slice of pizza (or pie, cheesecake, pastries, breads, and other flat-like circular foods), from the whole pizza. The lifter piece can be used to support and lift the slice of pizza after the slice has been cut by the first scissor and the second scissor.
    Type: Application
    Filed: May 1, 2019
    Publication date: November 7, 2019
    Inventor: Calvin T. Liu