Patents by Inventor Weidong Zheng

Weidong Zheng 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: 20240308043
    Abstract: A noise reduction nailer and a speed adjusting assembly are described. The speed adjusting assembly may comprise a power level adjust screw and a speed adjusting member matched with it. The speed adjusting member comprises a snap ring and a locate ring fixed on the snap ring. Slots with different heights are uniformly provided on a side wall of the locate ring. The power level adjust screw is composed of two speed adjusting rings with different diameters. A bulge is provided on an inner side wall of the large-diameter speed adjusting ring and the large-diameter speed adjusting ring is adapted to the locate ring. The speed adjusting assembly can adjust the shooting power of the nailer for different base bodies, and can use a steel ball to act on a small head cone of a piston to automatically reset the piston.
    Type: Application
    Filed: May 28, 2024
    Publication date: September 19, 2024
    Inventors: Weidong ZHENG, Wenhong DU, Chao WANG, Fangyi WANG
  • Publication number: 20220234185
    Abstract: A noise reduction nailer and a speed adjusting assembly are described. The speed adjusting assembly may comprise a speed adjusting nut and a speed adjusting member matched with it. The speed adjusting member comprises a cover cap and a sear holder return spring fixed on the cover cap. Firing pins assembly with different heights are uniformly provided on a side wall of the sear holder return spring. The speed adjusting nut is composed of two speed adjusting rings with different diameters. A firing pin spring is provided on an inner side wall of the large-diameter speed adjusting ring and the large-diameter speed adjusting ring is adapted to the sear holder return spring. The speed adjusting assembly can adjust the shooting power of the nailer for different base bodies, and can use a steel ball to act on a small head cone of a pawl to automatically reset the pawl.
    Type: Application
    Filed: January 26, 2022
    Publication date: July 28, 2022
    Inventors: Weidong ZHENG, Wenhong DU, Chao WANG, Fangyi WANG
  • Publication number: 20180371008
    Abstract: The present invention is generally related to composition, kits and methods for synthesizing nucleic acid molecules and particularly for synthesizing labeled nucleic acid molecules. Specifically, the invention relates to methods, kits and compositions for synthesizing indirectly labeled nucleic acid molecules. The labeled nucleic acid molecules produced in accordance with the invention are particularly suited as labeled probes for nucleic acid detection, diagnostics, and array analysis.
    Type: Application
    Filed: June 29, 2018
    Publication date: December 27, 2018
    Inventors: Jun LEE, Weidong ZHENG
  • Publication number: 20160272955
    Abstract: A thermostable DNA polymerase composition comprising at least two DNA polymerases, one of which is substantially reduced in 5?-exonuclease activity and one of which has 5?-exonuclease activity. This polymerase may be used in methods including, but not limited to, nucleic acid synthesis, DNA sequencing, nucleic acid amplification and cDNA synthesis.
    Type: Application
    Filed: June 3, 2016
    Publication date: September 22, 2016
    Inventors: Weidong ZHENG, Jun Lee, Robert Potter, David Mandelman
  • Patent number: 9376698
    Abstract: An isolated mutant Tfi DNA polymerase having a D144A point mutation. This polymerase may be used in methods including, but not limited to, nucleic acid synthesis, DNA sequencing, nucleic acid amplification and cDNA synthesis.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: June 28, 2016
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Weidong Zheng, Jun E. Lee, Robert Jason Potter, David Mandelman
  • Publication number: 20150126723
    Abstract: The present invention is generally related to composition, kits and methods for synthesizing nucleic acid molecules and particularly for synthesizing labeled nucleic acid molecules. Specifically, the invention relates to methods, kits and compositions for synthesizing indirectly labeled nucleic acid molecules. The labeled nucleic acid molecules produced in accordance with the invention are particularly suited as labeled probes for nucleic acid detection, diagnostics, and array analysis.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Inventors: Jun LEE, Weidong ZHENG
  • Publication number: 20120225431
    Abstract: The present invention is generally related to composition, kits and methods for synthesizing nucleic acid molecules and particularly for synthesizing labeled nucleic acid molecules. Specifically, the invention relates to methods, kits and compositions for synthesizing indirectly labeled nucleic acid molecules. The labeled nucleic acid molecules produced in accordance with the invention are particularly suited as labeled probes for nucleic acid detection, diagnostics, and array analysis.
    Type: Application
    Filed: February 6, 2012
    Publication date: September 6, 2012
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jun E. Lee, Weidong Zheng
  • Publication number: 20080254525
    Abstract: A thermostable DNA polymerase composition comprising at least two DNA polymerases, one of which is substantially reduced in 5?-exonuclease activity and one of which has 5?-exonuclease activity.
    Type: Application
    Filed: March 20, 2008
    Publication date: October 16, 2008
    Applicant: INVITROGEN CORPORATION
    Inventors: Weidong Zheng, Jun E. Lee, Robert Jason Potter, David Mandelman
  • Publication number: 20060292578
    Abstract: A thermostable DNA polymerase composition comprising at least two DNA polymerases, one of which is substantially reduced in 5?-exonuclease activity and one of which has 5?-exonuclease activity.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 28, 2006
    Inventors: Weidong Zheng, Jun Lee, Robert Potter, David Mandelman
  • Publication number: 20040265870
    Abstract: The present invention is generally related to composition, kits and methods for synthesizing nucleic acid molecules and particularly for synthesizing labeled nucleic acid molecules. Specifically, the invention relates to methods, kits and compositions for synthesizing indirectly labeled nucleic acid molecules. The labeled nucleic acid molecules produced in accordance with the invention are particularly suited as labeled probes for nucleic acid detection, diagnostics, and array analysis.
    Type: Application
    Filed: April 9, 2004
    Publication date: December 30, 2004
    Applicant: Invitrogen Corporation
    Inventors: Jun E. Lee, Weidong Zheng