Patents by Inventor Weiping Chen

Weiping Chen 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: 20210393067
    Abstract: Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.
    Type: Application
    Filed: December 31, 2019
    Publication date: December 23, 2021
    Inventors: Weiping CHEN, Jinbin TAN
  • Publication number: 20210369034
    Abstract: Provided is a telescopic rail, comprising a first rail and a second rail slidably arranged relative to each other, two rotating wheels, a belt, a first and a second traction block. When the rail is put into use, loosen the first and the second fixing device to release the belt from the first and the second traction block, then slide the first and the second rail relative to each other till the total length of the rails is qualified for the installation requirement, then tighten the first and the second fixing device to grip the belt by the first and the second traction block, after that cut off the surplus of belt, thus the length of the telescopic rail could be adjusted on-site without preparatory measurements and customizations, which decreases the workload for measurements and improves the efficiency for installation.
    Type: Application
    Filed: December 31, 2019
    Publication date: December 2, 2021
    Inventors: Jinbin TAN, Weiping CHEN
  • Patent number: 10344356
    Abstract: The present invention belongs to the technical field of the preparation of alloy materials, and discloses a high strength and toughness alloy material, a method for preparing the alloy material by semi-solid sintering, and application thereof.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: July 9, 2019
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Chao Yang, Yaguang Yao, Limei Kang, Lehua Liu, Shengguan Qu, Weiping Chen, Yuanyuan Li
  • Publication number: 20170137917
    Abstract: The present invention belongs to the technical field of the preparation of alloy materials, and discloses a high strength and toughness alloy material, a method for preparing the alloy material by semi-solid sintering, and application thereof.
    Type: Application
    Filed: December 29, 2015
    Publication date: May 18, 2017
    Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Chao YANG, Yaguang YAO, Limei KANG, Lehua LIU, Shengguan QU, Weiping CHEN, Yuanyuan LI
  • Patent number: 8106227
    Abstract: Compounds of the formula I in the form of enantiomerically pure diastereomers or a mixture of diastereomers, (I), where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 3; n is 0 or an integer from 1 to 4; R2 is a hydrocarbon radical or a C-bonded heterohydrocarbon radical; Cp is unsubstituted or C1-C4-alkyl-substituted cyclopentadienyl; Y is a C-bonded chiral group which directs metals of metallation reagents into the ortho position; and Phos is a P-bonded P(III) substituent. The compounds are chiral ligands for complexes of transition metals which are used as homogeneous catalysts in asymmetric syntheses.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: January 31, 2012
    Assignee: Solviasag
    Inventors: Weiping Chen, Felix Spindler, Benoît Pugin
  • Publication number: 20110241345
    Abstract: An expandable multi-set circulation hydroelectric power generation method and system. The system includes a power station control area (A), a transformer substation area (B), a circulation cistern (C) provided with a plurality of small cisterns (CA1 to CA20). Gates (E1 to E20) and protection screenings are installed in the small cisterns (CA1 to CA20). A water pump set station area is provided with a plurality of water pump sets (D1 to D20). The water pump sets (D1 to D20) are connected to the small cisterns (CA1 to CA20). The small cisterns (CA1 to CA20) are connected to pressure pipes (G1 to G20). The pressure pipes (G1 to G20) are connected to work done pipes (H1 to H10). A plurality of water turbine generator sets (F1 to F51) and a plurality of gates (E42, E43, E47, E50, E53, E56, E59, E63, E64, E65) are installed in the work done pipes (H1 to H10).
    Type: Application
    Filed: September 9, 2008
    Publication date: October 6, 2011
    Inventor: Weiping Chen
  • Patent number: 7977499
    Abstract: Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; R2 is an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and R3 is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R2 and R3 are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R4 is an unsubstituted or C1-C6-alkyl-, C1-C6-alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group, are ligands for metal complexes which are suitable as catalysts for homogeneous enantioselective hydrogenation.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: July 12, 2011
    Assignee: Solvias AG
    Inventors: Weiping Chen, Felix Spiindler, Ulrike Nettekoven, Benoît Pugin
  • Publication number: 20100168422
    Abstract: Provided herein are compounds and methods useful for preparing hexahydrofuro[2,3-b]furan-3-ol. Hexahydrofuro[2,3-b]furan-3-ol can be efficiently synthesized in four steps from readily available starting materials.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventor: Weiping Chen
  • Publication number: 20100160660
    Abstract: Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; R2 is an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and R3 is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R2 and R3 are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R4 is an unsubstituted or C1-C6-alkyl-, C1-C6-alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group, are ligands for metal complexes which are suitable as catalysts for homogeneous enantioselective hydrogenation.
    Type: Application
    Filed: February 15, 2008
    Publication date: June 24, 2010
    Inventors: Weiping Chen, Felix Spindler, Ulrike Nettekoven, Benoît Pugin
  • Publication number: 20090270499
    Abstract: This invention relates to a process for synthesizing Atazanvir, including novel intermediates and novel steps to various intermediates along the synthetic pathway.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 29, 2009
    Applicant: OXYRANE (UK) LIMITED
    Inventor: Weiping Chen
  • Publication number: 20090124812
    Abstract: Compounds of the formula I in the form of enantiomerically pure diastereomers or a mixture of diastereomers, (I), where the radicals R1 are identical or different and are each C1-C4-alkyl; m is 0 or an integer from 1 to 3; n is 0 or an integer from 1 to 4; R2 is a hydrocarbon radical or a C-bonded heterohydrocarbon radical; Cp is unsubstituted or C1-C4-alkyl-substituted cyclopentadienyl; Y is a C-bonded chiral group which directs metals of metallation reagents into the ortho position; and Phos is a P-bonded P(III) substituent. The compounds are chiral ligands for complexes of transition metals which are used as homogeneous catalysts in asymmetric syntheses.
    Type: Application
    Filed: April 11, 2007
    Publication date: May 14, 2009
    Inventors: Weiping Chen, Felix Spindler, Benoit Pugin
  • Patent number: 7369343
    Abstract: A disk drive is disclosed comprising a head actuated over a disk having a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors and each servo sector comprises a track address. A read signal from the head representing a first track address in one of the servo sectors is processed in order to generate a detected track address which is compared to a first target track address to obtain a first track address error. A correction metric is generated representing a likelihood that the first track address error was caused by a detection error, and if the correction metric exceeds a threshold, the detected track address is corrected in response to the first track address error, and the write operation is continued. If the correction metric does not exceed the threshold, the write operation is aborted.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 6, 2008
    Assignee: Western Digital Technologies, Inc.
    Inventors: Teik E E Yeo, Weiping Chen Jiang
  • Publication number: 20060135355
    Abstract: An immobilised nitrogen-containing ligand is described comprising the reaction product of a compound of formula (I) wherein R5, R6, R7 and R8 are independently hydrogen, a saturated or unsaturated C1-C10 alkyl group, an aryl group, a urethane group, a sulphonyl group or form an imine group, R1, R2, R3, and R4 are independently hydrogen, a saturated or unsaturated C1-C10 alkyl group or an aryl group and at least one of R1, R2, R3 and R4 is functionalised with a functional group, and a solid support having a site capable of reacting with said functional group. The nitrogen-containing ligand is useful for preparing immobilised catalysts for performing e.g. asymmetric catalysis.
    Type: Application
    Filed: July 30, 2003
    Publication date: June 22, 2006
    Inventors: William Hems, Weiping Chen, Jianliang Xiao
  • Publication number: 20040059159
    Abstract: A method of generating a functionalised arylphosphine, novel intermediates and novel functinalised arylphosphines.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 25, 2004
    Applicant: The University of Liverpool
    Inventors: Jianliang Xiao, Weiping Chen
  • Publication number: 20030181767
    Abstract: A method of generating a functionalised arylphosphine, novel intermediates and novel functionalised arylphosphines.
    Type: Application
    Filed: November 8, 2002
    Publication date: September 25, 2003
    Inventors: Jianliang Xiao, Weiping Chen