Patents by Inventor Hung-Ching Chang

Hung-Ching Chang 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).

  • Biodegradable composite and product containing biodegradable composite
    Patent number: 12420319
    Abstract: A biodegradable composite includes an organic matter and a porous material, wherein the organic matter has viable bacteria, and a total plate count of the organic matter is greater than or equal to 104 CFU/g. The organic matter accounts for 40% to 80% of a weight of the biodegradable composite. The porous material accounts for 20% to 60% of the weight of the biodegradable composite. The biodegradable composite could instantly remove unpleasant odor and accelerate a decomposition process to form compost. A product containing the biodegradable composite is provided as well.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: September 23, 2025
    Inventors: Chung-King Hsu, Jui-Tsai Wang, Shu-Tang Chang, Hung-Ching Chang
  • BIODEGRADABLE COMPOSITE AND PRODUCT CONTAINING BIODEGRADABLE COMPOSITE
    Publication number: 20220339681
    Abstract: A biodegradable composite includes an organic matter and a porous material, wherein the organic matter has viable bacteria, and a total plate count of the organic matter is greater than or equal to 104 CFU/g. The organic matter accounts for 40% to 80% of a weight of the biodegradable composite. The porous material accounts for 20% to 60% of the weight of the biodegradable composite. The biodegradable composite could instantly remove unpleasant odor and accelerate a decomposition process to form compost. A product containing the biodegradable composite is provided as well.
    Type: Application
    Filed: July 19, 2021
    Publication date: October 27, 2022
    Inventors: CHUNG-KING HSU, JUI-TSAI WANG, SHU-TANG CHANG, HUNG-CHING CHANG
  • Wafer cassette
    Patent number: 10242899
    Abstract: A wafer cassette for storing wafers comprises a case and a plurality of carriers for carrying the wafers. Each of the carriers is pivotally and movably mounted to a pivot of the case, and can selectively accommodate in or depart from an accommodation space of the case for benefit of the wafer loading or unloading.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: March 26, 2019
    Inventors: Chien-Ming Kuo, Hung-Ching Chang
  • WAFER CASSETTE
    Publication number: 20180211860
    Abstract: A wafer cassette for storing wafers comprises a case and a plurality of carriers for carrying the wafers. Each of the carriers is pivotally and movably mounted to a pivot of the case, and can selectively accommodate in or depart from an accommodation space of the case for benefit of the wafer loading or unloading.
    Type: Application
    Filed: March 13, 2017
    Publication date: July 26, 2018
    Inventors: Chien-Ming Kuo, Hung-Ching Chang