Patents by Inventor Chien-Chih Li

Chien-Chih Li 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: 20210159235
    Abstract: A memory device and a method for forming the same are provided. The method includes forming a plurality of gate structures on a substrate, forming a first spacer on opposite sides of the gate structures, filling a dielectric layer between adjacent first spacers, forming a metal silicide layer on the gate structures, conformally forming a spacer material layer over the metal silicide layer, the first spacer layer and the dielectric layer, and performing an etch back process on the spacer material layer to form a second spacer on opposite sides of the metal silicide layer.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 27, 2021
    Inventors: Yi-Tsung TSAI, Chia-Wei WU, Chih-Hao LIN, Chien-Chih LI
  • Patent number: 10276905
    Abstract: A non-contact frequency automatic tuning filter with an antileakage chamber includes a first casing with a first cavity formed at a first opening of the first casing, a moving part, and a second cavity. The second cavity has a second casing, a chamber formed in the second casing, and second and third openings penetrating through the second casing. The moving part is plugged from the third opening into the first cavity or from the third opening into a space between the third opening and the first cavity. The second opening proximate to the moving part constitutes a part of the chamber. The second casing has a spacing portion proximate to the moving part for separating the moving part and chamber. The first and second casings are not in contact with the moving part. The invention can prevent leakage of electromagnetic waves and unstable frequency shifting.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: April 30, 2019
    Inventors: Chien-Chih Li, Jen-Ti Peng, Shih-Gong Ciou, Cheng-Lung Wu, Ruei-Yang Syu, Jui-En Fan
  • Publication number: 20190020090
    Abstract: A non-contact frequency automatic tuning filter with an antileakage chamber includes a first casing with a first cavity formed at a first opening of the first casing, a moving part, and a second cavity. The second cavity has a second casing, a chamber formed in the second casing, and second and third openings penetrating through the second casing. The moving part is plugged from the third opening into the first cavity or from the third opening into a space between the third opening and the first cavity. The second opening proximate to the moving part constitutes a part of the chamber. The second casing has a spacing portion proximate to the moving part for separating the moving part and chamber. The first and second casings are not in contact with the moving part. The invention can prevent leakage of electromagnetic waves and unstable frequency shifting.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 17, 2019
    Applicant: Universal Microwave Technology, Inc.
    Inventors: Chien-Chih Li, Jen-Ti Peng, Shih-Gong Ciou, Cheng-Lung Wu, Ruei-Yang Syu, Jui-En Fan
  • Patent number: 10062941
    Abstract: Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and a second moving member. The motor unit includes a rod and a driver, and the driver determines a clockwise rotation or a counterclockwise rotation and drives the rod to move the moving plate towards or away from the microwave body so as to insert the lugs into cavities to a desired depth and adjust a center frequency.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: August 28, 2018
    Inventors: Yu-Cheng Chen, Chien-Chih Li, Jen-Ti Peng, Chun-Wei Chen, Chun-Kai Wang, Chun-Yu Chu
  • Publication number: 20180102579
    Abstract: Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and a second moving member. The motor unit includes a rod and a driver, and the driver determines a clockwise rotation or a counterclockwise rotation and drives the rod to move the moving plate towards or away from the microwave body so as to insert the lugs into cavities to a desired depth and adjust a center frequency.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 12, 2018
    Applicant: Universal Microwave Technology, Inc.
    Inventors: Yu-Cheng Chen, Chien-Chih Li, Jen-Ti Peng, Chun-Wei Chen, Chun-Kai Wang, Chun-Yu Chu
  • Patent number: 7486161
    Abstract: A reverse-phase cross coupling structure includes a base, which has a resonance chamber, resonators vertically arranged in parallel in the resonance chamber, and coupling portions respectively coupled between each two adjacent resonators, each coupling portion having a top recess and a coupling hole in the top recess, and an adjustment device, which comprises a cover plate fixedly covered on the base and has through holes corresponding to the coupling holes of the coupling portions and a plurality of adjustment screws respectively inserted through the through holes of the cover plate and threaded into the coupling holes of the coupling portions to the desired elevation to regulate the amount of the reverse-phase cross coupling of the resonators. This novel reverse-phase cross coupling structure is achieved only by base and adjustment device, it is not necessary to employ extra parts as in the prior designs.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: February 3, 2009
    Assignee: Universal Microwave Technology, Inc.
    Inventors: Chien-Chih Li, Sheng-Feng Yeh, Wei Jen
  • Publication number: 20070139142
    Abstract: A reverse-phase cross coupling structure includes a base, which has a resonance chamber, resonators vertically arranged in parallel in the resonance chamber, and coupling portions respectively coupled between each two adjacent resonators, each coupling portion having a top recess and a coupling hole in the top recess, and an adjustment device, which comprises a cover plate fixedly covered on the base and has through holes corresponding to the coupling holes of the coupling portions and a plurality of adjustment screws respectively inserted through the through holes of the cover plate and threaded into the coupling holes of the coupling portions to the desired elevation to regulate the amount of the reverse-phase cross coupling of the resonators. This novel reverse-phase cross coupling structure is achieved only by base and adjustment device, it is not necessary to employ extra parts as in the prior designs.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 21, 2007
    Inventors: Chien-Chih Li, Sheng-Feng Yeh, Wei Jen