Patents by Inventor Kun-Feng Chiang

Kun-Feng Chiang 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: 9450192
    Abstract: The present invention provides a carbazole derivative of formula (I) for an organic electroluminescent device: wherein Y represents a heteroatom selected from N, O, P, S, or a bicyclic or tricyclic heterocyclic ring; and Ar1 and Ar2 each independently represent an alkyl or aryl substituted or unsubstituted aromatic hydrocarbon, or an alkyl or aryl substituted or unsubstituted heterocyclic aromatic hydrocarbon.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: September 20, 2016
    Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY
    Inventors: Banumathy Balaganesan, Kun-Feng Chiang, Huang-Ming Guo, Po-Wei Hsu
  • Patent number: 9353085
    Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X1, X2, X3, Y, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, and Ar7 are as defined in the description.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: May 31, 2016
    Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Banumathy Balaganesan, Yi-Huan Fu, Kun-Feng Chiang, Fang-Shih Lin, Zheng-Feng Ye, Chang-Ying Chu
  • Patent number: 9153787
    Abstract: The present invention discloses a novel compound of Formula 1, and an organic electroluminescent device using the same. In Formula 1, X and Y independently represents an aromatic or a hetero aromatic hydrocarbon having a carbon number of from 5 to 10. Ar1 to Ar7 each independently represents an unsubstituted or substituted aromatic hydrocarbon having a carbon number of from 4 to C12, or an unsubstituted or substituted condensed polycyclic aromatic hydrocarbon having a carbon number of from 4 to 12; Ar1 to Ar7 can form an annulated or fused aromatic ring system with the adjacent aromatic hydrocarbons. When the compound of Formula I is used in the device, high luminous efficiency, longer lifetime and low driving voltage can be achieved.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: October 6, 2015
    Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Banumathy Balaganesan, Heh-Lung Huang, Po-Wei Hsu, Kun-Feng Chiang
  • Publication number: 20140163233
    Abstract: The present invention discloses a novel compound of Formula 1, and an organic electroluminescent device using the same. In Formula 1, X and Y independently represents an aromatic or a hetero aromatic hydrocarbon having a carbon number of from 5 to 10. Ar1 to Ar7 each independently represents an unsubstituted or substituted aromatic hydrocarbon having a carbon number of from 4 to C12, or an unsubstituted or substituted condensed polycyclic aromatic hydrocarbon having a carbon number of from 4 to 12; Ar1 to Ar7 can form an annulated or fused aromatic ring system with the adjacent aromatic hydrocarbons. When the compound of Formula I is used in the device, high luminous efficiency, longer lifetime and low driving voltage can be achieved.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Applicant: E-RAY OPTOELECTRONICS TECHONOLOGY CO., LTD.
    Inventors: Banumathy Balaganesan, Heh-Lung Huang, Po-Wei Hsu, Kun-Feng Chiang
  • Publication number: 20130048956
    Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X1, X2, X3, Y, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, and Ar7 are as defined in the description.
    Type: Application
    Filed: June 8, 2012
    Publication date: February 28, 2013
    Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Banumathy Balaganesan, Yi-Huan Fu, Kun-Feng Chiang, Fang-Shih Lin, Zheng-Feng Ye, Chang-Ying Chu
  • Publication number: 20120175598
    Abstract: The present invention provides a carbazole derivative of formula (I) for an organic electroluminescent device: wherein Y represents a heteroatom selected from N, O, P, S, or a bicyclic or tricyclic heterocyclic ring; and Ar1 and Ar2 each independently represent an alkyl or aryl substituted or unsubstituted aromatic hydrocarbon, or an alkyl or aryl substituted or unsubstituted heterocyclic aromatic hydrocarbon.
    Type: Application
    Filed: December 5, 2011
    Publication date: July 12, 2012
    Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Banumathy Balaganesan, Kun-Feng Chiang, Huang-Ming Guo, Po-Wei Hsu
  • Patent number: 7955008
    Abstract: A magnet array member with more than four poles is used for being mounted on a shutter of a camera module of a portable mobile communication device, adjacent to one side of a yoke iron of the shutter. The magnet array member includes a disc portion and a driving portion. The disc portion has more than four N poles and S poles, and an annular side face and opposite first end face and second end face. The driving portion protrudes from one of the first end face and the second end face of the disc portion in a vertical direction. Since the driving portion protrudes from one end face of the disc portion, the disc portion can form more than four N poles and S poles when magnetized, thereby being convenient for mass production.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: June 7, 2011
    Assignees: Vi-Tai Technology Co., Ltd.
    Inventors: Kao-Chi Liu, Yi-Hao Fan, Chao-Jung Chiang, Kun-Feng Chiang
  • Publication number: 20110116783
    Abstract: A magnet array member with more than four poles is used for being mounted on a shutter of a camera module of a portable mobile communication device, adjacent to one side of a yoke iron of the shutter. The magnet array member includes a disc portion and a driving portion. The disc portion has more than four N poles and S poles, and an annular side face and opposite first end face and second end face. The driving portion protrudes from one of the first end face and the second end face of the disc portion in a vertical direction. Since the driving portion protrudes from one end face of the disc portion, the disc portion can form more than four N poles and S poles when magnetized, thereby being convenient for mass production.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 19, 2011
    Applicants: Vi-Tai Technology Co., Ltd., Kao-Chi Liu
    Inventors: Kao-Chi Liu, Yi-Hao Fan, Chao-Jung Chiang, Kun-Feng Chiang
  • Publication number: 20090245780
    Abstract: A shutter device comprises a base, two electromagnetic valves, two blades, and a cover plate. A first light hole is formed in the center of base. The electromagnetic valve comprises a magnetic core, a coil unit, and a magnetic part. The magnetic cores and coil units are on the base, being axially symmetrical at the periphery of first light hole of the base. The blades join with the corresponding magnetic parts of the electromagnetic valves, in which each of the blades may travel between first and second positions at a degree of freedom to open or shut the first light hole through which rays of light pass. The cover plate is assembled onto the base and provided with a second light hole corresponding to the first light hole. The two magnetic cores are axially symmetrical on the base and lie at the periphery of first light hole.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 1, 2009
    Inventors: Kun-Feng Chiang, Chao-Jung Chiang, Chao-Hsi Wang
  • Publication number: 20030093038
    Abstract: The present invention provides a safety syringe. A second positioning means is disposed on the inner wall of a barrel. The front end of a passive needle retraction element is engaged with a needle. An active needle retraction element having a rear section larger than the bore of the barrel exactly contracts and clamps the inner end of a push rod when implanted into the barrel. The passive needle retraction element after engaged with the active needle retraction element can be forced to separate from the positioning restriction of the second positioning means so that the needle can be retracted into the barrel by pulling back the push rod. When the rear section of the active needle retraction element emerges out of the rear end of the barrel, its contraction state will restore to the expansion state to release clamping to the push rod.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 15, 2003
    Inventor: Kun-Feng Chiang