Patents by Inventor Shih Ching Chuang

Shih Ching Chuang 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: 20210147420
    Abstract: The present invention provides 11-arylcinnolino[2,3-f]phenanthridinium salt compounds and method for producing the same by highly regioselective synthesis of 11-phenylimino[2,3-f]phenanthridin-9-ium salts from 2-azobiaryls and alkenes under catalysis of palladium, through double oxidative C—H coupling of alkenes, to give the polycyclic cinnolinophenanthridinium salts in moderate yields. The reaction mechanism involves ortho C—H olefination of 2-azobiaryls by alkenes, intramolecular aza-Michael addition, ?-hydride elimination, electrophilic palladation followed by intramolecular C—H activation and reductive elimination. The prepared quaternary ammonium salts are candidate materials for solution-processable OLED and bioimaging materials.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 20, 2021
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Shih-Ching Chuang, Jayakumar Jayachandran
  • Patent number: 10947232
    Abstract: The present invention provides 11-arylcinnolino[2,3-f]phenanthridinium salt compounds and method for producing the same by highly regioselective synthesis of 11-phenylimino[2,3-f]phenanthridin-9-ium salts from 2-azobiaryls and alkenes under catalysis of palladium, through double oxidative C—H coupling of alkenes, to give the polycyclic cinnolinophenanthridinium salts in moderate yields. The reaction mechanism involves ortho C—H olefination of 2-azobiaryls by alkenes, intramolecular aza-Michael addition, ?-hydride elimination, electrophilic palladation followed by intramolecular C—H activation and reductive elimination. The prepared quaternary ammonium salts are candidate materials for solution-processable OLED and bioimaging materials.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 16, 2021
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Shih-Ching Chuang, Jayakumar Jayachandran
  • Publication number: 20210061799
    Abstract: The present invention provides 11-arylcinnolino[2,3-f]phenanthridinium salt compounds and method for producing the same by highly regioselective synthesis of 11-phenylimino[2,3-f]phenanthridin-9-ium salts from 2-azobiaryls and alkenes under catalysis of palladium, through double oxidative C—H coupling of alkenes, to give the polycyclic cinnolinophenanthridinium salts in moderate yields. The reaction mechanism involves ortho C—H olefination of 2-azobiaryls by alkenes, intramolecular aza-Michael addition, ?-hydride elimination, electrophilic palladation followed by intramolecular C—H activation and reductive elimination. The prepared quaternary ammonium salts are candidate materials for solution-processable OLED and bioimaging materials.
    Type: Application
    Filed: October 25, 2019
    Publication date: March 4, 2021
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Shih-Ching Chuang, Jayakumar Jayachandran
  • Patent number: 8741448
    Abstract: Disclosed is a fullerene derivative having a formula of F-Cy, wherein F is an open-cage fullerene, and Cy is a chalcogenyl group. The fullerene derivative can be applied to hydrogen storage material and an optoelectronic device such as an organic light emitting diode (OLED), a solar cell, or an organic thin film transistor (TFT).
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: June 3, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Ping Chen, Yeu-Ding Chen, Shih-Ching Chuang, Yu-Wei Lin, Fu-Wei Chan
  • Publication number: 20120305919
    Abstract: Disclosed is a fullerene derivative having a formula of F-Cy, wherein F is an open-cage fullerene, and Cy is a chalcogenyl group. The fullerene derivative can be applied to hydrogen storage material and an optoelectronic device such as an organic light emitting diode (OLED), a solar cell, or an organic thin film transistor (TFT).
    Type: Application
    Filed: August 9, 2011
    Publication date: December 6, 2012
    Inventors: Chih-Ping CHEN, Yeu-Ding Chen, Shih-Ching Chuang, Yu-Wei Lin, Fu-Wei Chan
  • Patent number: 6293529
    Abstract: A bubble generating apparatus includes a hollow shell having a plurality of bottom inlets through and a side outlet, a screw rod longitudinally mounted in the shell, a baffle threaded onto one end of the screw rod and suspended inside the shell above the bottom inlets, the baffle having a plurality of smoothly arched bottom notches for baffling intake flows of high pressure liquid to produce bubbles, and a knob fastened to one end of the screw rod outside the shell and rotated to move the baffle along the screw rod relative to the bottom inlets.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: September 25, 2001
    Inventors: Tsun Shin Chang, Shih Ching Chuang
  • Patent number: 6264174
    Abstract: A high pressure tank installed in an emulsifier and connected between a bubble generator and a water pipe to receive a liquid from a water pump for enabling the liquid to be delivered to the bubble generator for making bubbles, the high pressure tank having a venturi tube extended from one side thereof to the water pipe for enabling a part of the liquid to be guided out of the high pressure tank to the water pipe for circulation, and an air valve installed in the venturi tube for enabling outside air to be drawn into the venturi tube to mix with the liquid passing through.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: July 24, 2001
    Inventors: Tsun Shin Chang, Shih Ching Chuang
  • Patent number: 6132609
    Abstract: A combination water filter tank, which includes a rectangular housing, three transverse partition boards disposed in the housing and defining a first sedimentation chamber, a second sedimentation chamber, a third sedimentation chamber and a fourth sedimentation chamber, a water inlet for guiding water from an external water source into the first sedimentation chamber, a plurality of first longitudinal partition boards of different heights respectively disposed in the first sedimentation chamber, three L-shaped water guide boards respectively suspended in the second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber, a plurality of second longitudinal partition boards respectively disposed in the second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber on the middle at an elevation below the L-shaped water guide boards, and a water outlet for guiding water out of the fourth sedimentation chamber.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: October 17, 2000
    Inventors: Tsun Shin Chang, Shih Ching Chuang