Patents by Inventor Lan Y. Cheng

Lan Y. Cheng 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).

  • Shrink films comprising a cyclic-olefin copolymer core
    Patent number: 11141961
    Abstract: A multi-layered polyethylene film suitable for shrink applications including at least a core layer and at least one other layer adjacent thereto, the core layer including within a range from 5 wt % to 50 wt % of a cyclic olefin copolymer based on the weight of the core layer, and within a range from 50 wt % to 95 wt % of a polyethylene based on the weight of the core layer, wherein the cyclic olefin copolymer has a glass transition temperature (Tg) of at least 70° C.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: October 12, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Lan Y. Cheng, Achiel J. M. Van Loon, Yong Yang
  • Shrink Films Comprising a Cyclic-Olefin Copolymer Core
    Publication number: 20180333938
    Abstract: A multi-layered polyethylene film suitable for shrink applications comprising at least a core layer and at least one other layer adjacent thereto, the core layer comprising within a range from 5 wt % to 50 wt % of a cyclic olefin copolymer based on the weight of the core layer, and within a range from 50 wt % to 95 wt % of a polyethylene based on the weight of the core layer, wherein the cyclic olefin copolymer has a glass transition temperature (Tg) of at least 70° C.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 22, 2018
    Inventors: Lan Y. Cheng, Achiel J. M. Van Loon, Yong Yang
  • Heat Sealable Propylene-Based Films
    Publication number: 20180155538
    Abstract: Disclosed herein are multilayer films including at least one layer that comprises and/or is formed from a composition comprising a propylene polymer and a hydrocarbon resin. The films generally further include at least one layer that comprises and/or is made from a composition comprising a propylene-based elastomer and/or a propylene polymer. The multilayer films disclosed herein generally have a low sealing initiation temperature.
    Type: Application
    Filed: October 17, 2017
    Publication date: June 7, 2018
    Inventors: Lan Y. Cheng, Jay K. Keung, Etienne R. H. Lernoux, Nai-Tong Lui