Patents by Inventor Huimin Cao

Huimin Cao 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: 20180163075
    Abstract: Described herein is a method for coating optical fiber where the coating has been cured by application of a source of monochromatic actinic radiation, such as a light emitting diode, wherein the coating contains a urethane(meth)acrylate oligomer; a (meth)acrylate diluent monomer; a diluent monomer having an electron donating group adjacent to the vinyl group, such as a vinyl ether monomer; and a photoinitiator. Also described are compositions which are capable of undergoing photopolymerization when coated on an optical fiber and when irradiated by a light emitting diode (LED) with improved surface cure and reduced yellowing. Also described are the coated optical fibers produced by such processes and compositions.
    Type: Application
    Filed: August 17, 2015
    Publication date: June 14, 2018
    Inventors: Kangtai REN, Huimin CAO, Wendell Wayne CATTRON, Robin Papachristopoulos
  • Publication number: 20130224495
    Abstract: A radiation curable coating for a floor comprising: at least one radiation curable oligomer, at least one photoinitiator and at least one reactive diluent monomer, said radiation curable oligomer being selected from the group consisting of Urethane (meth)acrylates, epoxy (meth)acrylates, polyester (meth)acrylates, acrylic (meth)acrylates, and hydrocarbon (meth)acrylates is described and claimed. The composition is capable of undergoing photopolymerization when coated on a floor and when irradiated by a light emitting diode (LED) light, having a wavelength from about 100 nm to about 900 nm, to provide a cured coating on the floor, with the cured coating having an external surface, and the cured coating having a Percent Reacted Acrylate Unsaturation (% RAU) at the external surface of about 60% or greater. Also described and claimed are the process to coat a floor with the LED curable coating for floor and a coated floor where the coating has been cured by application of LED light.
    Type: Application
    Filed: December 16, 2010
    Publication date: August 29, 2013
    Inventors: Keqi Gan, Timothy Bishop, Tai-Yeon Lee, Huimin Cao, Mark Diaz
  • Publication number: 20130101837
    Abstract: Radiation-curable coating compositions for a surface such as a concrete floor, which include at least one multi-functional monomer or oligomer, a polymer, at least one photoinitiator, and one or more tertiary amine compounds containing zero or one crosslinkable double bonds are described and claimed. These coating compositions allow for application of at least about 0.15 mm (6 mil) thickness of the coating composition over an area larger than a UV radiation source, without the formation of wrinkles or buckles following each pass of the UV radiation source in the areas where light leakage from a side light shielding of the UV radiation source results in a very weak radiation intensity.
    Type: Application
    Filed: June 30, 2011
    Publication date: April 25, 2013
    Applicant: DSM IP ASSETS B.V.
    Inventors: Huimin Cao, Wenguang Li, Tai Yeon Lee
  • Publication number: 20130101861
    Abstract: Radiation-curable coating compositions for a surface such as a concrete floor, which include at least one multi-functional monomer or oligomer, at least one photoinitiator, at least one glossy band matting agent, and at least one matte band matting agent are described and claimed. These low gloss coating compositions allow for application of the coating composition over an area larger than a UV radiation source, while minimizing the formation of gloss bands or gloss lines that exhibit a different level of gloss in the areas where light leakage from a side light shielding of the UV radiation source results in a very weak radiation intensity, as compared to the areas subjected to high radiation intensity. These low gloss coating compositions are optionally clear topcoat compositions.
    Type: Application
    Filed: June 30, 2011
    Publication date: April 25, 2013
    Applicant: DSM IP ASSETS B.V.
    Inventors: Huimin Cao, Wenguang Li, Tai Yeon Lee
  • Publication number: 20120229515
    Abstract: A power distribution unit with voltage and current sensors and a display which displays inverted characters when the power distribution unit upside down as sensed by a tilt sensor.
    Type: Application
    Filed: October 7, 2011
    Publication date: September 13, 2012
    Inventor: Huimin Cao
  • Publication number: 20120148833
    Abstract: Radiation-curable coating compositions for a surface such as a concrete floor, which include one or more acrylate monomers or oligomers having at least four crosslinkable double bonds, at least one photoinitiator, one or more fillers, and at least one pigment or dye are described and claimed. These coating compositions allow for application of at least 0.10 mm (4 mil) thickness of the coating composition over an area larger than a radiation source, without the formation of wrinkles along the shoulder area of each pass of the radiation source in the areas where weak intensity light from a side edge of the radiation source is capable of partially curing only a portion of the coating composition thickness. The coating compositions optionally further comprise one or more tertiary amine compounds comprising zero or one crosslinkable double bonds, the one or more tertiary amine compounds providing an amine value of at least 7.5 mg KOH per gram of the total radiation-curable resins of the coating composition.
    Type: Application
    Filed: June 30, 2011
    Publication date: June 14, 2012
    Inventors: Huimin CAO, Wenguang LI, Tia Yeon LEE
  • Publication number: 20110077788
    Abstract: The invention pertains to a system for monitoring and controlling power distribution including a power distribution device which has a module, a input line, and an output line. The input and output lines carry electrical power into an out of the module. The module has a switch in open or close position and a device wireless unit and a sensor. The sensor sends information regarding the electrical characteristics of the electric power being carried to the device microcontroller which causes a data to be sent wirelessly to the base unit. The base unit maintains a wireless connection for transmitting and receiving RF signals. The base unit receives the information regarding the electrical characteristics and sends it to a computer over a network.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 31, 2011
    Inventors: Herman Chan, Swen Anderson, Huimin Cao
  • Publication number: 20080031165
    Abstract: RS-232 data flow over a half duplex differential link between a KVM switch and a SCIM, which is attached to a RS-232 serial communication port of a target device. The half duplex differential link is a data communication link of two wires that carry one pair of half duplex differential signals. In a communication direction from the SCIM to the KVM switch, the SCIM encodes and transmits full RS-232 signals over the half duplex differential link to the KVM switch, which in turn decodes and restores the RS-232 signals to present same in a desired format. Likewise, in a communication direction from the KVM switch to the SCIM, the KVM switch encodes and transmits the RS-232 signals to the SCIM, which in turn decodes and outputs RS-232 signals to the target device.
    Type: Application
    Filed: August 7, 2006
    Publication date: February 7, 2008
    Inventors: Fenghua Shen, Huimin Cao
  • Patent number: 7171103
    Abstract: A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of ?35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: January 30, 2007
    Assignee: DSM IP Assets B.V
    Inventors: Jan van Eekelen, Sandra Nagelvoort, Duurt Alkema, Paul Buijsen, Huimin Cao, Robert W. Johnson, David M. Szum
  • Publication number: 20060024010
    Abstract: A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of ?35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
    Type: Application
    Filed: October 3, 2005
    Publication date: February 2, 2006
    Applicant: DSM IP Assets B.V.
    Inventors: Jan van Eekelen, Joanna Nagelvoort, Duurt Alkema, Paul Buijsen, Huimin Cao, Robert Johnson, David Szum
  • Patent number: 6961508
    Abstract: A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of ?35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: November 1, 2005
    Assignee: DSM IP Assets B.V.
    Inventors: Jan van Eekelen, Sandra Nagelvoort, Duurt Alkema, Paul Buijsen, Huimin Cao, Robert W. Johnson, David M. Szum
  • Publication number: 20040022511
    Abstract: The present invention provides a coated optical fiber having a primary coating and a secondary coating, wherein the primary coating has good attenuation loss resistance and is obtained by curing a composition having high cure speed.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 5, 2004
    Inventors: Jan van Eekelen, Sandra Nagelvoort, Duurt Alkema, Paul Buijsen, Huimin Cao, Robert W. Johnson, David M. Szum
  • Publication number: 20040013382
    Abstract: The present invention provides a coated optical fiber having a primary coating and a secondary coating, wherein the primary coating has good microbending resistance and is obtained by curing a composition having high cure speed.
    Type: Application
    Filed: April 24, 2003
    Publication date: January 22, 2004
    Inventors: Jan van Eekelen, Sandra Nagelvoort, Duurt Alkema, Paul Buijsen, Huimin Cao, Robert W. Johnson, David M. Szum