Patents by Inventor Rongfu Li

Rongfu Li 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: 20240392112
    Abstract: A polymer composition is disclosed formed from a cellulose ester polymer, a plasticizer, and at least one strength adjuvant. The strength adjuvant can comprise filler particles. The filler particles are added to the polymer composition in relatively great amounts, such as in amounts greater than 30% by weight.
    Type: Application
    Filed: May 23, 2024
    Publication date: November 28, 2024
    Inventors: Guodong Deng, Rongfu Li, Jonathan Caterino, Christopher McGrady, Michael Combs
  • Patent number: 12130493
    Abstract: A lens driving device includes a lens module, a first support frame, a second support frame sleeved on the first support frame, a support assembly for suspending the first support frame inside the second support frame, a first flexible printed circuit board (PCB) including folding portions, a second flexible PCB opposite to and independent from the first flexible PCB, and a driving assembly. Each folding portion includes a first fixing portion attached to the first support frame, a second fixing portion attached to the shell, and bent portions connecting the first fixing portion with the second fixing portion by bending. The two flexible PCBs are separately provided in the lens driving device to prevent the risk of disengagement when the two flexible PCBs move, and the folding portions prevent the first flexible PCB from being pulled by the movement of the lens module to be disconnected.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: October 29, 2024
    Assignee: Changzhou AAC Raytech Optronics Co., Ltd.
    Inventors: Tianheng Ni, Rongfu Xie, Feng Yan, Gang Li, Suohe Wei
  • Patent number: 12012503
    Abstract: A polymer composition containing cellulose acetate in combination with one or more impact modifiers is described. The polymer composition can also contain a plasticizer and a bio-based polymer in addition to the cellulose acetate. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: June 18, 2024
    Assignee: TICONA LLC.
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Publication number: 20240026130
    Abstract: A polymer composition is disclosed formed from at least one bio-based polymer and at least one odor masking agent. The odor masking agent is designed to control odors by masking the odors during melt processing of the composition without significantly interfering with the optical and/or mechanical characteristics of the composition.
    Type: Application
    Filed: July 21, 2023
    Publication date: January 25, 2024
    Inventors: Michael Combs, Rongfu Li, Ronald Hughes, Chongwen Huang, Xiaowei Zhang, Christopher McGrady
  • Publication number: 20240026122
    Abstract: A polymer composition comprising a cellulose ester polymer combined with at least one salt additive. The salt additive can be combined with the cellulose ester polymer in order to decrease the melt flow rate of the polymer and improve melt processing of the polymer for forming molded articles.
    Type: Application
    Filed: July 21, 2023
    Publication date: January 25, 2024
    Inventors: Rongfu Li, Michael Combs, Ronald Hughes, Susan Blankenship
  • Publication number: 20230407055
    Abstract: A polymer composition comprising a cellulose ester polymer in combination with a property enhancing agent. The property enhancing agent is combined with the cellulose ester polymer in an amount sufficient to improve at least one physical property. For instance, in one aspect, the melt processing characteristics of the polymer composition can be improved. Alternatively or in addition, molded articles made from the polymer composition can have improved surface characteristics. The property enhancing agent can be an acidic species, such as a diprotic, organic acid.
    Type: Application
    Filed: June 15, 2023
    Publication date: December 21, 2023
    Inventors: Michael Combs, Ronald Hughes, Rongfu Li, Chongwen Huang, Xiaowei Zhang, Christopher McGrady
  • Patent number: 11827772
    Abstract: A polymer composition containing cellulose acetate in combination with one or more bloom resistant or bio-based plasticizers and optionally one or more bio-based polymers is described. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: November 28, 2023
    Assignee: Ticona LLC
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Publication number: 20230323093
    Abstract: A polymer composition containing a cellulose ester polymer in combination with one or more plasticizers. The plasticizer can comprise a polyethylene glycol and/or triacetin. The polyethylene glycol plasticizer can have a number average molecular weight that has been found to improve one or more properties of the composition or of articles made from the composition.
    Type: Application
    Filed: April 7, 2023
    Publication date: October 12, 2023
    Inventors: Ronald Hughes, Rongfu Li, Michael Combs
  • Publication number: 20230323094
    Abstract: A polymer composition containing a cellulose ester polymer in combination with one or more plasticizers. One of the plasticizers can be polyethylene glycol. The polyethylene glycol plasticizer can have a number average molecular weight that has been found to improve one or more properties of the composition or of articles made from the composition.
    Type: Application
    Filed: April 7, 2023
    Publication date: October 12, 2023
    Inventors: Rongfu Li, Michael Combs, Xiaowei Zhang, Chongwen Huang, Christopher McGrady
  • Publication number: 20230312885
    Abstract: A polymer composition comprising a cellulose ester polymer in combination with a chain scission agent. The chain scission agent reacts with the cellulose ester polymer and decreases the intrinsic viscosity of the polymer. In this manner, the flow properties of the cellulose ester polymer can be dramatically improved. For instance, the melt flow rate of the polymer can increase making the polymer more amenable to molding processes.
    Type: Application
    Filed: March 10, 2023
    Publication date: October 5, 2023
    Inventors: Rongfu Li, Michael Combs, Ronald Hughes
  • Publication number: 20210171742
    Abstract: A polymer composition containing cellulose acetate in combination with one or more bloom resistant or bio-based plasticizers and optionally one or more bio-based polymers is described. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Publication number: 20210171739
    Abstract: A polymer composition containing cellulose acetate in combination with one or more bio-based polymers is described. The polymer composition can optionally also contain a plasticizer. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Publication number: 20210171740
    Abstract: A polymer composition containing cellulose acetate in combination with one or more impact modifiers is described. The polymer composition can also contain a plasticizer and a bio-based polymer in addition to the cellulose acetate. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Publication number: 20210171741
    Abstract: A polymer composition containing cellulose acetate in combination with one or more plasticizers and one or more acid scavengers. The composition can also optionally include one or more bio-based polymers. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Inventors: Christopher McGrady, Rongfu Li, Michael Combs, Xiaowei Zhang, Suresh Subramonian
  • Patent number: 10293890
    Abstract: A flare-type tension leg floating wind turbine foundation is provided, which includes a top support platform configured to support a tower frame, a blade and a wind turbine generator set; a bottom support structure connected to a plurality of tension legs; at least three hollow upright columns connected between the top support platform and the bottom support structure and arranged around a vertical center line of the floating wind turbine foundation, each of the at least three upright columns being inclined outward from a lower end to an upper end with respect to the vertical center line of the floating wind turbine foundation; and a ballast adjusting system provided in the upright columns and/or the bottom support structure.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: May 21, 2019
    Assignee: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Rongfu Li, Jianhai Zhang, Haifei Zhu
  • Publication number: 20180105661
    Abstract: Anti-condensation compositions and laminates comprising a cellulosic material selected from a cellulose ester and a cellulose ether and a polymer of an oxazoline, and processes for making such anti-condensation compositions without the need for saponification. Such compositions have now been shown to exhibit extremely desirable anti-condensation characteristics, with a low degree of hazing and increased hardness.
    Type: Application
    Filed: October 17, 2017
    Publication date: April 19, 2018
    Inventors: Michael COMBS, Rafael Rongfu LI, Xiaowei ZHANG, Kevin PARKER, Joanna MARSHALL, Stephen BERNARD
  • Publication number: 20160369455
    Abstract: A method for treating a cellulosic material comprises extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulose-containing material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.
    Type: Application
    Filed: March 11, 2015
    Publication date: December 22, 2016
    Inventors: Rongfu Li, Jay Mehta, Xiaoyan Tu, Prabuddha Bansal, Michael Combs, Denis Fallon, Lawton E. Kizer
  • Publication number: 20160195070
    Abstract: A flare-type tension leg floating wind turbine foundation is provided, which includes a top support platform configured to support a tower frame, a blade and a wind turbine generator set; a bottom support structure connected to a plurality of tension legs; at least three hollow upright columns connected between the top support platform and the bottom support structure and arranged around a vertical center line of the floating wind turbine foundation, each of the at least three upright columns being inclined outward from a lower end to an upper end with respect to the vertical center line of the floating wind turbine foundation; and a ballast adjusting system provided in the upright columns and/or the bottom support structure.
    Type: Application
    Filed: February 12, 2015
    Publication date: July 7, 2016
    Inventors: Rongfu LI, Jianhai ZHANG, Haifei ZHU
  • Patent number: 9316209
    Abstract: A movement inhibiting apparatus for a floating offshore wind turbine and a floating base with the apparatus. The movement inhibiting apparatus for the floating offshore wind turbine comprises at least one layer of an annular shake-reducing panel placed horizontally and surrounding the floating base. A plurality of shake-reducing fins is further arranged on the shake-reducing panel. The plurality of shake-reducing fins comprises a first set of shake-reducing fins arranged on one side of the shake-reducing panel and the shake-reducing fins of the first set are spaced apart vertically around the floating base. The movement inhibiting apparatus for the floating offshore wind turbine can effectively inhibit the movement of the floating wind turbine and is of low cost.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 19, 2016
    Assignee: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Rongfu Li, Haifei Zhu, Luolin Bai, Lei Shi
  • Publication number: 20160040360
    Abstract: A process for treating a cellulosic material comprising pretreating the cellulosic material and then extracting the cellulosic material with an extractant to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process.
    Type: Application
    Filed: August 3, 2015
    Publication date: February 11, 2016
    Inventors: Bin Li, Leslie Allen, Dinesh Arora, Prabuddha Bansal, Monica Boatwright, Christopher M. Bundren, Michael T. Combs, Denis G. Fallon, Rongfu Li, Jay Mehta, Tianshu Pan