Patents by Inventor Yunfeng Li

Yunfeng 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).

  • Patent number: 7027253
    Abstract: Compensation for disk mode disturbances during self-writing of servo data is provided in a manner that accounts for differences in orientation between the disk surface from which position information is derived and the disk surface on which servo data is written. Microactuators corresponding to upper surfaces of disks may have a wiring polarity that is out of phase with the wiring polarity of microactuators corresponding to upper surfaces of disks so that disk mode compensation signals supplied to the microactuators produce motion in opposite directions. The servo control system may supply signals to microactuators individually and select the polarities of those signals to account for differences in orientation between the disk surface from which position information is derived and the disk surface on which servo data is written.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: April 11, 2006
    Assignee: Maxtor Corporation
    Inventors: Yu Sun, Yunfeng Li, Lin Guo
  • Publication number: 20040132671
    Abstract: This invention relates to quercetin derivative, its preparation, and a pharmaceutical combination, as well as their medical uses for the prevention or treatment of diseases related to 5HT1A receptor or neuron cell damages, including Alzeheimer's disease, drug or alcohol dependence, sleep disorders or panic state; and for delaying senility, improving learning and memory, preventing and treatment of neuron cell damages caused by various kinds of cerebral damages.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 8, 2004
    Applicant: ACADEMY OF MILITARY MEDICAL SCIENCES INSTITUTE OF PHARMACOLOGY AND TOXICOLOGY
    Inventors: Yimin Zhao, Ming Yang, Yunfeng Li, Xinhui Luan, Zhipu Luo