Patents by Inventor Ling Tan

Ling Tan 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).

  • Painting roadway with composition of epoxy, urethane polyacrylate and polyamine
    Patent number: 6485787
    Abstract: A polymeric composition exhibiting a fast cure rate composition comprises a polyfunctional urethane acrylate component; an epoxy component; and a polyfunctional amine component. The polyfunctional acrylate component and the polyfunctional amine component have sufficient functionalities such that the polyfunctional urethane acrylate component reacts with the polyfunctional component to form a secondary amine component. The secondary amine then reacts with the epoxy component such that a crosslinked polymeric material is formed.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: November 26, 2002
    Assignee: Reichhold, Inc.
    Inventors: Ling Tan, Bryan A. Naderhoff, Jeffrey H. Danneman
  • Composition of epoxy, urethane polyacrylate and polyamine
    Patent number: 6437059
    Abstract: A composition suitable for forming a paint marking on a roadway comprises a polyfunctional urethane acrylate having at least two acrylate groups, an epoxy component and a polyfunctional amine. The polyfunctional urethane acrylate reacts with the polyfunctional amine to form an adduct with secondary amine groups. The secondary amine reacts with the epoxy component to yield a chemically crosslinked material having a no track time of less than about ten minutes.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: August 20, 2002
    Assignee: Reichhold, Inc.
    Inventors: Ling Tan, Bryan A. Naderhoff, Jeffrey H. Danneman
  • Hindered amine adducts for polyurea systems
    Patent number: 6369189
    Abstract: A polymeric composition may include an isocyanate component and an amine component, which includes: where R1 represents a hydrocarbon radical, X represents an organic group, and a is an integer. The polymeric composition may further include: where R2 represents a hydrocarbon radical; Y represents an organic group; and b is an integer. Methods of forming such polymeric and amine compositions and methods of applying such polymeric systems are also provided.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: April 9, 2002
    Assignee: Reichhold, Inc.
    Inventors: Bryan Naderhoff, Ling Tan, Jeffrey H. Danneman
  • Method and apparatus for handling resonance effects in disc drives using active damping
    Publication number: 20020006009
    Abstract: A method of handling resonance effects on disc drives includes the steps of monitoring a position error signal (PES) for an actuator arm of a disc drive, generating a feedforward compensation signal from the PES using a bandpass filter, and applying the compensation signal to a servo control signal. The bandpass filter has a center frequency set to a known resonance frequency. A disc drive includes an actuator assembly including an arm for carrying a head in a transducing relation with respect to a disc in response to a control signal, and a controller that monitors a PES for the arm and generates the control signal. The controller includes a servo controller that generates a servo control signal from the PES, and a feedforward compensation element which bandpass filters the PES to generate a compensation signal which is combined with the servo control signal to generate the control signal.
    Type: Application
    Filed: March 16, 2001
    Publication date: January 17, 2002
    Inventors: KianKeong Ooi, MingZhong Ding, Lee Ling Tan, Wing Kong Chiang, Beng Wee Quak, Yang Quan Chen
  • Curable polymeric composition employing polyfunctional urethane acrylates
    Publication number: 20010009952
    Abstract: A polymeric composition exhibiting a fast cure rate composition comprises a polyfunctional urethane acrylate component; an epoxy component; and a polyfunctional amine component. The polyfunctional acrylate component and the polyfunctional amine component have sufficient functionalities such that the polyfunctional urethane acrylate component reacts with the polyfunctional component to form a secondary amine component. The secondary amine then reacts with the epoxy component such that a crosslinked polymeric material is formed.
    Type: Application
    Filed: March 12, 2001
    Publication date: July 26, 2001
    Inventors: Ling Tan, Bryan A. Naderhoff, Jeffrey H. Danneman