Patents by Inventor Chuen-An Lin

Chuen-An Lin 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: 20130127223
    Abstract: A high-seat folding chair includes two pairs of front legs and rear legs pivotally connected with each other so as to be operable to unfold or fold the folding chair. When unfolded, each of the front legs and the rear legs form an angle relative to a horizontal plane. A footrest is mounted between the two front legs. Two opposite portions of the footrest bend symmetrically in a horizontal direction to form horizontal portions, respectively. The two horizontal portions further bend upward to form inclined extensions, and a portion of each inclined extensions forms a flat portion. An angle defined between the inclined extension and the horizontal portion is equal to an angle defined between the front leg and the horizontal plane. The inclined extensions of the footrest are respectively affixed with the two front legs, such that the footrest is mounted in horizontal.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Inventors: Mei Chuen LIN, Tzu Mei WANG
  • Patent number: 8371645
    Abstract: A portable chair has a mechanism for self folding up and cushioning a seat. The mechanism includes a tension spring assembled between a seat frame and a rear leg for collapsing the seat, and a cushioning pad affixed on the rear leg. The tension spring has first and second hook elements disposed on different orientations and engaged with holes. The hook elements are easy to install, and reduce the risk of disengagement after assembly. The length of the spring is substantially equal to the length of the space in which it is assembled, so that it is not excessively stretched during assembly, thereby preventing spring fatigue. The cushioning pad is integrally formed and includes retainer and insert portions through which it is affixed with the rear leg, and a cushion portion that can absorb noise and vibration when the seat is collapsed.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: February 12, 2013
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Publication number: 20120187733
    Abstract: A portable chair has a mechanism for self folding up and cushioning a seat. The mechanism includes a tension spring assembled between a seat frame and a rear leg for collapsing the seat, and a cushioning pad affixed on the rear leg. The tension spring has first and second hook elements disposed on different orientations and engaged with holes. The hook elements are easy to install, and reduce the risk of disengagement after assembly. The length of the spring is substantially equal to the length of the space in which it is assembled, so that it is not excessively stretched during assembly, thereby preventing spring fatigue. The cushioning pad is integrally formed and includes retainer and insert portions through which it is affixed with the rear leg, and a cushion portion that can absorb noise and vibration when the seat is collapsed.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Inventors: MEI CHUEN LIN, Tzu Mei Wang
  • Publication number: 20120177735
    Abstract: Disclosed herein is an oral dosage formulation that contains both immediate-release and sustained release drugs for treating neurodegenerative disorders. The immediate-release drug in the oral dosage formulation is an acetylcholinesterase inhibitor (AChEI) with a dissolution rate of releasing more than 80% of the AChEI within 60 min; and the sustained-release drug is memantine with a dissolution rate of releasing more than 80% of memantine within 12 hours.
    Type: Application
    Filed: September 29, 2010
    Publication date: July 12, 2012
    Applicant: Center Laboratories, Inc.
    Inventors: Huai-Cheng Lee, Chien-Fen Chen, Chuen-Lin Din, Rong Jin Lin
  • Patent number: 8111206
    Abstract: The invention discloses a high electromagnetic transmission composite structure for reducing the transmission loss of an electromagnetic wave. The high electromagnetic transmission composite structure includes a first composite structure layer, a second composite structure layer, and a first buffer layer. The first composite structure layer has a first thickness and a first dielectric constant. The second composite structure layer has a second thickness and a second dielectric constant. The first buffer is disposed between the first composite structure layer and the second composite structure layer and has a third thickness and a third dielectric constant. The transmission loss of the electromagnetism wave can be adjusted by adjusting the first thickness, the first dielectric constant, the second thickness, the second dielectric constant, the third thickness, and the third dielectric constant.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: February 7, 2012
    Assignee: Chung-Shan Institute of Science and Technology, Armaments Bureau, Ministry of National Defense
    Inventors: Cheng-Ching Lee, Jiunn-Shyong Lin, Shin-Hon Chen, Yie-Fan King, Dar-Chuen Lin
  • Patent number: 8109564
    Abstract: A seat self-lifting device for a portable chair is mounted between a seat frame and a front leg of the portable chair. The seat self-lifting device includes a rotary axle, a spiral spring and a fixing rod. The rotary axle passes through the front leg and connects with a connecting plate mounted on the seat frame. The fixing rod is perpendicularly disposed on the front leg. The spiral spring has a first end connected with the rotary axle and a second end wrapped around the fixing rod. When the seat is deployed, the rotary axle is rotated along a direction and the spiral spring is deformed to accumulate a resilient force. When the user leaves the seat, the resilient force of the spiral spring rotates the rotary axle along a reverse direction for flipping the seat to a collapsed state.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: February 7, 2012
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Patent number: 8090070
    Abstract: The present invention discloses a synchronizing device for real-time USB audio data transmission, comprising: a first adder unit, a start-of-frame countdown unit, a phase-locked loop circuit, a frequency divider, a second adder unit, a third adder unit, a fourth adder unit, a frame calibrating register unit, a calibrating mapping unit and a calibrating pulse generating unit. A start-of-frame token sent by the USB host is used as a 1-ms reference cycle so that a high-frequency clock passes through the frequency divider to issue a first clock. The first clock signal has a constant clock number in a USB start-of-frame. The absolute time is automatically adjusted according to the duration of a previous start-of-frame. Therefore, asynchronicity of data transmission between the USB host and external devices can be overcome.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 3, 2012
    Assignee: Holtek Semiconductor Inc.
    Inventors: Min-Shing Wu, Chuen-An Lin
  • Publication number: 20110187170
    Abstract: A seat self-lifting device for a portable chair is mounted between a seat frame and a front leg of the portable chair. The seat self-lifting device includes a rotary axle, a spiral spring and a fixing rod. The rotary axle passes through the front leg and connects with a connecting plate mounted on the seat frame. The fixing rod is perpendicularly disposed on the front leg. The spiral spring has a first end connected with the rotary axle and a second end wrapped around the fixing rod. When the seat is deployed, the rotary axle is rotated along a direction and the spiral spring is deformed to accumulate a resilient force. When the user leaves the seat, the resilient force of the spiral spring rotates the rotary axle along a reverse direction for flipping the seat to a collapsed state.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 4, 2011
    Inventors: Mei Chuen LIN, Tzu Mei Wang
  • Publication number: 20110180501
    Abstract: A disassemblable folding chair hanging cart is provided. The disassemblable folding chair hanging cart includes a chassis, two standing poles, two reinforcement sets, and a plurality of hanging racks. The chassis includes a plurality of caster sets distributed in different positions of the chassis for providing a stable support for the disassemblable folding chair hanging cart. The two standing poles are vertically and symmetrically erected on opposite positions of the chassis. Each reinforcement set is provided between one of the two standing poles and the chassis for reinforcing the connection strength therebetween. Each hanging rack includes a cross beam, and a plurality of hanging bars for hanging a plurality of folding chairs. The disassemblable folding chair hanging cart can be conveniently assembled from independent parts, and when an empty folding chair hanging cart is to be stored or delivered, it can be disassembled and packed in a minimum size.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 28, 2011
    Inventors: Mei Chuen LIN, Tzu Mei Wang
  • Publication number: 20110171302
    Abstract: Disclosed herein is a method for treating patient suffering from a disorder related to central nervous system with an oral dosage formulation that contains both sustained-release and immediate-release drugs. The sustained-release drug in the oral dosage formulation is memantine, and the formulation provides an average blood level Cmax of the memantine in a range of about 10-24 ng/mL during an average Tmax of about 10-45 hours. The immediate-release drug in the oral dosage formulation is an acetylcholinesterase inhibitor (AChEI), and the formulation provides an average blood level Cmax of the AChEI in a range of about 12-38 ng/mL during an average Tmax of less than about 4 hours.
    Type: Application
    Filed: March 25, 2011
    Publication date: July 14, 2011
    Applicant: Center Laboratories, Inc.
    Inventors: Guang-Tzuu SHANE, Chien-Fen Chen, Chuen-Lin Din, Hui-Ling Tsai, Pei-Chen Tsai
  • Patent number: 7954891
    Abstract: A foldable chair has an armrest retracting structure that includes two plate elements placed below each armrest, each plate element having a guide slot with a linear section and a reverse turn section. A first pivotal axle passes through the plate elements and connects with the front leg frame. A support beam has an end through which a second pivotal axle is mounted, the second pivotal axle being connected with the front leg frame. An opposite end of the support beam is secured in the slots through a bolt. By moving the support beam, the armrest can be deployed or retracted. When the bolt is lodged in the reverse turn section, the armrest can be locked in the deployed position.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: June 7, 2011
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Patent number: 7940876
    Abstract: A universal series bus (USB) frequency synchronous apparatus using a start of frame (SOF) signal generated by a master device to mark a reference interval is disclosed. The frequency synchronizing apparatus includes a frequency divider, a counter unit with a default pulse number, an arithmetic unit, and an adjusting unit. The frequency divider divides a high frequency signal by a variable frequency factor to generate a lock frequency signal. The counter is used to detect a pulse number of the lock frequency signal at a reference interval and obtain a pulse difference between the default pulse number and the detected pulse number of the lock frequency signal.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: May 10, 2011
    Assignee: Holtek Semiconductor Inc.
    Inventors: Min-Kun Wang, Min-Hsiung Hu, Chuen-An Lin
  • Patent number: 7934769
    Abstract: A seat frame for a folding chair includes a U-shaped front frame, a linear rear frame and a seat cushion. The front frame has a first support surface between an upper surface and a lower surface of the front frame, the first support surface having a contour the same as that of the front frame. The rear frame has a second support surface between an upper surface and a lower surface of the rear frame, the second support surface having a contour the same as that of the rear frame. The seat cushion is clamped between the first and second support surfaces in a horizontal position. The peripheral edges of the seat cushion are thereby in tight contact with the first and second support surfaces. Brackets are then used to connect the front frame and the rear frame that surround the seat cushion therein.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: May 3, 2011
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Publication number: 20110084538
    Abstract: A seat frame for a folding chair includes a U-shaped front frame, a linear rear frame and a seat cushion. The front frame has a first support surface between an upper surface and a lower surface of the front frame, the first support surface having a contour the same as that of the front frame. The rear frame has a second support surface between an upper surface and a lower surface of the rear frame, the second support surface having a contour the same as that of the rear frame. The seat cushion is clamped between the first and second support surfaces in a horizontal position. The peripheral edges of the seat cushion are thereby in tight contact with the first and second support surfaces. Brackets are then used to connect the front frame and the rear frame that surround the seat cushion therein.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 14, 2011
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Publication number: 20110084537
    Abstract: A seat frame for a folding chair includes a support rail of an increased size that extends from a bottom edge of the seat frame toward a central area of the seat frame. The support rail is used for placing a seat cushion of the folding chair thereon. A plurality of through-holes is formed on the support rail, and a plurality of threaded holes is formed through a bottom of the seat cushion corresponding to the through-holes. When the seat cushion is placed on the support rail, the threaded holes are in alignment with the through-holes, and a plurality of fasteners are engaged via the through-holes with the threaded holes so as to directly fix the seat cushion on the support rail of the seat frame. The strength of the seat cushion for sustaining a load can be thereby enhanced.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 14, 2011
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Publication number: 20110050370
    Abstract: The invention discloses a high electromagnetic transmission composite structure for reducing the transmission loss of an electromagnetic wave. The high electromagnetic transmission composite structure includes a first composite structure layer, a second composite structure layer, and a first buffer layer. The first composite structure layer has a first thickness and a first dielectric constant. The second composite structure layer has a second thickness and a second dielectric constant. The first buffer is disposed between the first composite structure layer and the second composite structure layer and has a third thickness and a third dielectric constant. The transmission loss of the electromagnetism wave can be adjusted by adjusting the first thickness, the first dielectric constant, the second thickness, the second dielectric constant, the third thickness, and the third dielectric constant.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Inventors: Cheng-Ching Lee, Jiunn-Shyong Lin, Shin-Hon Chen, Yie-Fan King, Dar-Chuen Lin
  • Publication number: 20100283296
    Abstract: A foldable chair has an armrest retracting structure that includes two plate elements placed below each armrest, each plate element having a guide slot with a linear section and a reverse turn section. A first pivotal axle passes through the plate elements and connects with the front leg frame. A support beam has an end through which a second pivotal axle is mounted, the second pivotal axle being connected with the front leg frame. An opposite end of the support beam is secured in the slots through a bolt. By moving the support beam, the armrest can be deployed or retracted. When the bolt is lodged in the reverse turn section, the armrest can be locked in the deployed position.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 11, 2010
    Inventors: Mei Chuen Lin, Tzu Mei Wang
  • Patent number: 7800392
    Abstract: The present invention discloses a detection control circuit for preventing a leakage current, which comprises a register unit comprising a clock signal input terminal for receiving a clock signal; a reset signal input terminal, for receiving a reset signal; a signal generating terminal, for generating a logic signal; and a logic gate, coupled to said register unit, comprising a first signal input terminal for receiving said logic signal; a second signal input terminal for receiving a control signal; and a signal output terminal, for outputting an output signal according to said logic signal and said control signal; wherein said control signal controls said logic gate so as to keep said output signal to be in a fixed state which detects a leakage current in an integrated circuit due to the process flaw.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 21, 2010
    Assignee: Holtek Semiconductor Inc.
    Inventors: Jia-Hsuan Wu, Chuen-An Lin
  • Patent number: 7701361
    Abstract: A parking information sensing device is disclosed. Each parking space in a parking lot is disposed with a parking information sensing device, detecting whether a car on the parking space. By means of a driving control circuit, the sensing device drives a light emitting unit to emit a light and a reflecting element of the parking space is on a pathway of the light. Light is reflected by the reflecting element and then passes light sensing unit that detects the reflected light and generates a first sensing signal sent to the driving control circuit. Thus the driving control circuit judges if there is no vehicle on the parking space. On the other hand, it judges if there is a car on the parking space according to another sensing signal. The sensing device further includes a first transmitting/receiving unit that forms a wireless mesh network among parking information sensing devices.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: April 20, 2010
    Assignee: Chun Shan Institute of Science and Technology, Araments Bureau, M.N.D.
    Inventors: Ming-Town Lee, Tain-Wen Suen, Tung-Jung Hsu, Chuen-Lin Bau
  • Publication number: 20100085072
    Abstract: The present invention discloses a detection control circuit for preventing a leakage current, which comprises a register unit comprising a clock signal input terminal for receiving a clock signal; a reset signal input terminal, for receiving a reset signal; a signal generating terminal, for generating a logic signal; and a logic gate, coupled to said register unit, comprising a first signal input terminal for receiving said logic signal; a second signal input terminal for receiving a control signal; and a signal output terminal, for outputting an output signal according to said logic signal and said control signal; wherein said control signal controls said logic gate so as to keep said output signal to be in a fixed state which detects a leakage current in an integrated circuit due to the process flaw.
    Type: Application
    Filed: November 4, 2008
    Publication date: April 8, 2010
    Applicant: HOLTEK SEMICONDUCTOR INC.
    Inventors: JIA-HSUAN WU, Chuen-An Lin