Patents by Inventor Y. C. Chen

Y. C. Chen 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: 20230160085
    Abstract: Silver electroplating compositions deposit silver with low coefficients of friction on substrates, such as nickel, copper and copper alloys. The silver deposits have coefficients of friction of less than or equal to 1 in contrast to many conventional silver deposits which typically have coefficients of friction greater than 1, such as 1.5. The silver deposits also have improved wear resistance in contrast to silver deposited from many conventional silver electroplating baths. The low coefficients of friction and improved wear resistance of silver deposited from the silver electroplating compositions is especially suitable for connectors and electronics finishes. Preferably, the silver electroplating compositions are cyanide-free silver electroplating compositions.
    Type: Application
    Filed: January 11, 2023
    Publication date: May 25, 2023
    Inventors: Youngmin Yoon, Miguel A. Rodriguez, Michael Lipschutz, Jamie Y. C. Chen, Kristen Griffin
  • Patent number: 11578418
    Abstract: Silver electroplating compositions deposit silver with low coefficients of friction on substrates, such as nickel, copper and copper alloys. The silver deposits have coefficients of friction of less than or equal to 1 in contrast to many conventional silver deposits which typically have coefficients of friction greater than 1, such as 1.5. The silver deposits also have improved wear resistance in contrast to silver deposited from many conventional silver electroplating baths. The low coefficients of friction and improved wear resistance of silver deposited from the silver electroplating compositions is especially suitable for connectors and electronics finishes. Preferably, the silver electroplating compositions are cyanide-free silver electroplating compositions.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: February 14, 2023
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS LLC (RHEM)
    Inventors: Youngmin Yoon, Miguel A. Rodriguez, Michael Lipschutz, Jamie Y. C. Chen, Kristen Griffin
  • Publication number: 20220307149
    Abstract: Silver electroplating compositions deposit silver with low coefficients of friction on substrates, such as nickel, copper and copper alloys. The silver deposits have coefficients of friction of less than or equal to 1 in contrast to many conventional silver deposits which typically have coefficients of friction greater than 1, such as 1.5. The silver deposits also have improved wear resistance in contrast to silver deposited from many conventional silver electroplating baths. The low coefficients of friction and improved wear resistance of silver deposited from the silver electroplating compositions is especially suitable for connectors and electronics finishes. Preferably, the silver electroplating compositions are cyanide-free silver electroplating compositions.
    Type: Application
    Filed: February 3, 2022
    Publication date: September 29, 2022
    Inventors: Youngmin Yoon, Miguel A. Rodriguez, Michael Lipschutz, Jamie Y. C. Chen, Kristen Griffin
  • Patent number: 11434577
    Abstract: Aqueous acid binary silver-bismuth alloy electroplating compositions and methods enable electroplating silver rich binary silver-bismuth deposits. The aqueous acid binary silver-bismuth alloy electroplating compositions include thiol terminal aliphatic compounds having carboxyl or sulfonic groups which enable deposition of silver rich binary silver-bismuth alloys having deposits which are matte to semi-bright, uniform and have a low coefficient of friction.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: September 6, 2022
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS LLC
    Inventors: Miguel A. Rodriguez, Youngmin Yoon, Michael Lipschutz, Jamie Y. C. Chen
  • Publication number: 20220112619
    Abstract: Aqueous acid binary silver-bismuth alloy electroplating compositions and methods enable electroplating silver rich binary silver-bismuth deposits. The aqueous acid binary silver-bismuth alloy electroplating compositions include 5-membered heterocyclic nitrogen compounds with a thiol functionality which enable deposition of the silver rich binary silver-bismuth alloys. The silver rich silver-bismuth deposits are matte to semi-bright, uniform and have a low coefficient of friction.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Inventors: Miguel A. Rodriguez, Michael Lipschutz, Jamie Y.C. Chen, Youngmin Yoon
  • Patent number: 11242609
    Abstract: Silver-nickel alloy electroplating compositions and methods enable electroplating silver rich silver-nickel deposits which are bright, uniform and have a relatively low coefficient of friction. The binary silver-nickel alloy is deposited from an aqueous acid silver-nickel alloy electroplating composition. The aqueous acid silver-nickel alloy electroplating composition includes thiol compounds which shift the reduction potential of silver ions toward the reduction potential of nickel ions such that a silver rich binary silver-nickel layer is deposited on a substrate.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: February 8, 2022
    Assignee: ROHM AND HASS ELECTRONIC MATERIALS LLC
    Inventors: Jamie Y. C. Chen, Michael Lipschutz, Miguel A. Rodriguez, Kin Cheung Lo
  • Publication number: 20210172082
    Abstract: Aqueous acid binary silver-bismuth alloy electroplating compositions and methods enable electroplating silver rich binary silver-bismuth deposits. The aqueous acid binary silver-bismuth alloy electroplating compositions include 5-membered heterocyclic nitrogen compounds with a thiol functionality which enable deposition of the silver rich binary silver-bismuth alloys. The silver rich silver-bismuth deposits are matte to semi-bright, uniform and have a low coefficient of friction.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 10, 2021
    Inventors: Miguel A. Rodriguez, Michael Lipschutz, Jamie Y.C. Chen, Youngmin Yoon
  • Publication number: 20210115582
    Abstract: Aqueous acid binary silver-bismuth alloy electroplating compositions and methods enable electroplating silver rich binary silver-bismuth deposits. The aqueous acid binary silver-bismuth alloy electroplating compositions include thiol terminal aliphatic compounds having carboxyl or sulfonic groups which enable deposition of silver rich binary silver-bismuth alloys having deposits which are matte to semi-bright, uniform and have a low coefficient of friction.
    Type: Application
    Filed: September 1, 2020
    Publication date: April 22, 2021
    Inventors: Miguel A. Rodriguez, Youngmin Yoon, Michael Lipschutz, Jamie Y.C. Chen
  • Publication number: 20210108324
    Abstract: Silver-nickel alloy electroplating compositions and methods enable electroplating silver rich silver-nickel deposits which are bright, uniform and have a relatively low coefficient of friction. The binary silver-nickel alloy is deposited from an aqueous acid silver-nickel alloy electroplating composition. The aqueous acid silver-nickel alloy electroplating composition includes thiol compounds which shift the reduction potential of silver ions toward the reduction potential of nickel ions such that a silver rich binary silver-nickel layer is deposited on a substrate.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 15, 2021
    Inventors: Jamie Y.C. Chen, Michael Lipschutz, Miguel A. Rodriguez, Kin Cheung Lo
  • Publication number: 20120093273
    Abstract: A clock and data recovery (CDR) circuit includes an edge detector, an edge selector, and a phase selector. The edge detector is arranged to detect edges of serial input data and to provide an edge detection result. The serial input data is oversampled utilizing multiple clock phases. The edge selector for selecting one of the multiple clock phases for a recovered clock is arranged to provide an edge selection result, to receive the last edge selection result as a first input, and to receive the edge detection result as a second input. The phase selector is arranged to provide the recovered clock and recovered data.
    Type: Application
    Filed: October 15, 2010
    Publication date: April 19, 2012
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventor: Y. C. CHEN
  • Patent number: 5520874
    Abstract: A plunger (22), used in a standard mold, has a movable piston (23) and spring (24) that reduce the cull space when piston (23) is pressed downward into the cull mold compound.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: May 28, 1996
    Assignee: Texas Instruments Incorporated
    Inventors: C. H. Chou, T. H. Wang, C. S. Chen, Y. C. Chen, S. P. Ko
  • Patent number: 5321516
    Abstract: A tie arrangement for securing the CRT board onto the CRT neck, includes a belt for tying to the CRT neck, at least two bridge members each having one end coupled to the belt and the other end passed through the corresponding holes on the CRT board and engaged with the corresponding stop buckles on the other side of the hole. Each stop buckle is provided with a hole for the bridge member to pass through and a tongue is formed in the hole for detachably engaging with the bridge member.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: June 14, 1994
    Inventor: Su Y. C. Chen
  • Patent number: 5243136
    Abstract: An electric power cord with double-output terminal, comprising a casing formed of two symmetrical shells connected by bolts and retaining holes thereof, said symmetrical shells each having two arch-shaped vertical side walls symmetrically curving outwards at two opposite locations with a power input port therebetween and fastened with a first cable for connecting to a socket power and a straight vertical side wall at a right angle relative to said two arch-shaped vertical side walls and defined therewith two output ports fastened with a second cable and a third cable respectively for connecting said socket power to two separate electric appliances.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: September 7, 1993
    Assignee: King-Cord Co., Ltd.
    Inventor: Y. C. Chen
  • Patent number: 4841746
    Abstract: A finger ring is provided with ringlets mounted in a multiple tier arrangement. The ringlets are rotatably mounted about a removable axle. Each ringlet is coupled to the axle by a ball bearing assembly which is secured to the inside diameter of each ringlet. According to this rotary mounting arrangement, the center of gravity of each ringlet is offset with respect to its axis of rotation about the axle. Momentum imparted to each ringlet causes the ringlets to undergo separate and independent rotary movements, with the relative rates of rotation depending upon relative mass differences of the respective ringlets.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: June 27, 1989
    Inventor: Felix Y. C. Chen
  • Patent number: 4843283
    Abstract: An illumination control system has a plurality of infrared detection systems located in a plurality of adjacent scanning areas. Each of the detection systems controls the activation of light sources located in two or more scanning areas. Each of the detection systems is equipped with an infrared radiation sensor, an ambient light resistor, a timing circuit, a light source driving circuit, and a blinking condition prevention circuit.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: June 27, 1989
    Inventor: Jack Y. C. Chen
  • Patent number: 4785289
    Abstract: A timer controlled fire and burglar alarm system using an economical circuit design and battery for prolonged and effective functioning and includes a thermo-electric infrared sensor, a filter and an amplifier to detect signal, a plurality of time priority circuits, a time-delay circuit, a timer controlled alarm setting circuit and timers with time display for setting and disarming of an alert condition and/or driving peripheral devices so as to function as a fire alarm, a burglar alarm and a visitor detection system.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: November 15, 1988
    Inventor: Jack Y. C. Chen
  • Patent number: 4404930
    Abstract: Mechanical methods for reducing drastically the energy consumption of high pressure liquid pumping.The basic method is to utilize high pressure vapor at the suction side of the pump to reduce the required pumping pressure head. The energy content of the high pressure vapor is returned or utilized. Disclosed high efficiency heat exchangers and expansion absorbing vessels are provided to reduce energy requirement for transferring liquid to a vapor generator, a high pressure apparatus and a extended pipe line.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: September 20, 1983
    Inventor: Thomas Y. C. Chen
  • Patent number: 4211188
    Abstract: Mechanical methods for reducing drastically the energy consumption of high pressure liquid pumping and for eliminating the use of expensive multi-tube heat exchangers.The basic method is to utilize high pressure vapor at the suction side of the pump to reduce the required pumping pressure head. The energy content of the high pressure vapor is returned or utilized. Additional methods are provided to reduce energy requirement for transferring liquid to vapor generator, apparatus located at high elevation and apparatus having high pressure resistance.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: July 8, 1980
    Inventor: Thomas Y. C. Chen
  • Patent number: 4165718
    Abstract: A mechanical arrangement to reduce drastically the energy consumption for pumping condensate to feed high pressure vapor generators for power generation, industrial processing, and heating systems. Involved is a method to pump the condensate into one condensate receiver located at the sucton side of the condensate feed pump, and to bleed high pressure vapor from the vapor generator into the condensate receiver for imposing a pressure head upon the condensate therein to be approximately the same as that in the generator, and thus the pressure difference between the suction side and the discharge side of the pump is also drastically reduced while pumping the condensate into the generator, with the result that the energy consumption of the pump is also drastically reduced. The receiver is full of high pressure vapor while the condensate therein is drained by the pump, and the high pressure vapor means energy.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: August 28, 1979
    Inventor: Thomas Y. C. Chen