Patents by Inventor Yen-Ku Liu

Yen-Ku 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: 20180152941
    Abstract: A communications apparatus includes a radio transceiver and a processor. The radio transceiver transmits or receives wireless radio frequency signals to communicate with a first network device. The processor estimates a period for the first network device to transmit a timing advance (TA) command according to a plurality of previously received TA commands, determines an arrival time of a forthcoming TA command according to the estimated period, determines whether to skip a chance to receive the forthcoming TA command at the arrival time according to the estimated period and a TA timer interval, and does not use the radio transceiver to receive the forthcoming TA command at the arrival time when determining to skip the chance to receive the forthcoming TA command.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 31, 2018
    Inventors: Yi-Ting CHENG, Yen-Ku LIU
  • Patent number: 9408139
    Abstract: A mobile communication device supporting a plurality of Radio Access Technologies (RATs) and a plurality of radio frequencies is provided. In the mobile communication device, a Baseband processor is configured to schedule the plurality of RATs and the plurality of radio frequencies in pairs in an order for a Public Land Mobile Network (PLMN) selection procedure, and determine one of the pairs and repeat the determined pair in the order of the pairs during the PLMN selection procedure.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: August 2, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chi-Ju Chang, Tao-Sheng Ou, Yu-Ting Chen, Yen-Ku Liu
  • Publication number: 20160219501
    Abstract: A mobile communication device supporting a plurality of Radio Access Technologies (RATs) and a plurality of radio frequencies is provided. In the mobile communication device, a Baseband processor is configured to schedule the plurality of RATs and the plurality of radio frequencies in pairs in an order for a Public Land Mobile Network (PLMN) selection procedure, and determine one of the pairs and repeat the determined pair in the order of the pairs during the PLMN selection procedure.
    Type: Application
    Filed: May 13, 2015
    Publication date: July 28, 2016
    Inventors: Chi-Ju CHANG, Tao-Sheng OU, Yu-Ting CHEN, Yen-Ku LIU
  • Patent number: 8871251
    Abstract: A liposome including a neutral lipid membrane, a positively charged polymer, and a surface active polymer is provided. The neutral lipid membrane is formed as a hollow sphere, the positively charged polymer is dispersed on the neutral lipid membrane by non-covalent bonding, and the surface active polymer is dispersed on the neutral lipid membrane by non-covalent bonding. The liposome can stably adsorb various amounts of biomaterials by non-covalent bonding.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: October 28, 2014
    Assignee: Can Heal BioMediTech Corp.
    Inventors: Kuang-Wen Liao, Yen-Ku Liu, Yu-Ling Lin, Ching-Yi Lin
  • Publication number: 20130266614
    Abstract: The present invention provides a lipid carrier for delivering of a bioactive substance. The lipid carrier includes a lipid layer, a positive charged polymer and a surface active polymer. The positive charged polymer and the surface active polymer are respectively distributed on the lipid layer by non-covalent bonds. The present invention also provides a pharmaceutical composition. The present invention is advantageous for delivering bioactive substance efficiently.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 10, 2013
    Inventors: Kuang-Wen Liao, Yen-Ku Liu, Chia-Hung Chen
  • Publication number: 20100119593
    Abstract: A liposome including a neutral lipid membrane, a positively charged polymer, and a surface active polymer is provided. The neutral lipid membrane is formed as a hollow sphere, the positively charged polymer is dispersed on the neutral lipid membrane by non-covalent bonding, and the surface active polymer is dispersed on the neutral lipid membrane by non-covalent bonding. The liposome can stably adsorb various amounts of biomaterials by non-covalent bonding.
    Type: Application
    Filed: August 20, 2009
    Publication date: May 13, 2010
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Kuang-Wen Liao, Yen-Ku Liu, Yu-Ling Lin, Ching-Yi Lin
  • Patent number: 7577261
    Abstract: A wireless audio system includes a first device and a second device. The first device includes a first logic and a first WLAN unit coupled to the first logic. The first logic performs audio processing to generate audio data. The first WLAN unit transmits the audio data through a radio frequency channel. The second device includes a second WLAN unit and an audio reproducing unit coupled to the second WLAN unit. The second WLAN unit receives the audio data from the radio frequency channel. The audio reproducing unit generates sound according to the audio data.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: August 18, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yen-Ku Liu, Jia-Bin Huang
  • Publication number: 20070133817
    Abstract: A wireless audio system includes a first device and a second device. The first device includes a first logic and a first WLAN unit coupled to the first logic. The first logic performs audio processing to generate audio data. The first WLAN unit transmits the audio data through a radio frequency channel. The second device includes a second WLAN unit and an audio reproducing unit coupled to the second WLAN unit. The second WLAN unit receives the audio data from the radio frequency channel. The audio reproducing unit generates sound according to the audio data.
    Type: Application
    Filed: October 11, 2006
    Publication date: June 14, 2007
    Inventors: Yen-Ku Liu, Jia-Bin Huang