Patents by Inventor Weichiat Chen

Weichiat 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: 20230271117
    Abstract: An extraction cell cap assembly allows for toolless disassembly. The assembly includes a cap body having a threaded base releasably engaged with a cell vessel, a support member extending axially upward from the base, and a bore axially extending through the support member. The assembly also includes a locking cap having a plunger slidably received within the bore, a recess disposed within the plunger, and a locking portion that releasably engages the support member. Rotation of the locking cap in a first direction engages the locking portion with the support member, and rotation in an opposite direction disengages the locking portion. A filter is received in the recess and a seal member received in the bore, wherein the seal member forms a fluid-tight seal between the cell vessel and the assembly when the locking portion and the support member are engaged and the assembly is secured to the cell vessel.
    Type: Application
    Filed: May 10, 2023
    Publication date: August 31, 2023
    Inventors: Weichiat Chen, Kannan Srinivasan
  • Patent number: 11684877
    Abstract: An extraction cell cap assembly allows for toolless disassembly. The assembly includes a cap body having a threaded base releasably engaged with a cell vessel, a support member extending axially upward from the base, and a bore axially extending through the support member. The assembly also includes a locking cap having a plunger slidably received within the bore, a recess disposed within the plunger, and a locking portion that releasably engages the support member. Rotation of the locking cap in a first direction engages the locking portion with the support member, and rotation in an opposite direction disengages the locking portion. A filter is received in the recess and a seal member received in the bore, wherein the seal member forms a fluid-tight seal between the cell vessel and the assembly when the locking portion and the support member are engaged and the assembly is secured to the cell vessel.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 27, 2023
    Assignee: Dionex Corporation
    Inventors: Weichiat Chen, Kannan Srinivasan
  • Publication number: 20220096972
    Abstract: An extraction cell cap assembly allows for toolless disassembly. The assembly includes a cap body having a threaded base releasably engaged with a cell vessel, a support member extending axially upward from the base, and a bore axially extending through the support member. The assembly also includes a locking cap having a plunger slidably received within the bore, a recess disposed within the plunger, and a locking portion that releasably engages the support member. Rotation of the locking cap in a first direction engages the locking portion with the support member, and rotation in an opposite direction disengages the locking portion. A filter is received in the recess and a seal member received in the bore, wherein the seal member forms a fluid-tight seal between the cell vessel and the assembly when the locking portion and the support member are engaged and the assembly is secured to the cell vessel.
    Type: Application
    Filed: September 30, 2020
    Publication date: March 31, 2022
    Inventors: Weichiat Chen, Kannan Srinivasan
  • Publication number: 20150144065
    Abstract: Bird feeding devices are provided that include a base having a substantially flat upper surface, a pillar having a bottom end and an upper end, wherein the pillar extends upward from the base with the bottom end connected to the base at a location proximate the center of the upper surface, a roof disposed above the base and connected to the upper end of pillar, and a stand connected to the base at a location proximate an edge of the base, wherein the stand extends, around the pillar, towards the roof (i) for at least one third of a distance between the base and the roof and (ii) for at least three quarters of a circle, and wherein the stand comprises two or more perches, wherein the pillar is configured to slidingly receive one or more bird feed tablets.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 28, 2015
    Inventor: Weichiat Chen