Patents by Inventor Bradly Lefevre

Bradly Lefevre 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).

  • Corrosion and deposition protected valve apparatus and method
    Patent number: 9206919
    Abstract: An expandable and contractible shield around a bellows in a valve protects the bellows from corrosive gases and solid particles in the valve chamber. In a manifold valve assembly with multiple outlet ports and multiple valves in a common valve chamber, a respective expandable and contractible shield around each respective bellows of each respective valve in the assembly separates each bellows from corrosive gases and solid particles in the common valve chamber regardless of whether one or all of the valves in the assembly is opened or closed.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: December 8, 2015
    Assignee: MKS Instruments, Inc.
    Inventors: David Neumeister, Bradly Lefevre, Kevin Grout, Youfan Gu
  • CORROSION AND DEPOSITION PROTECTED VALVE APPARATUS AND METHOD
    Publication number: 20140109973
    Abstract: An expandable and contractible shield around a bellows in a valve protects the bellows from corrosive gases and solid particles in the valve chamber. In a manifold valve assembly with multiple outlet ports and multiple valves in a common valve chamber, a respective expandable and contractible shield around each respective bellows of each respective valve in the assembly separates each bellows from corrosive gases and solid particles in the common valve chamber regardless of whether one or all of the valves in the assembly is opened or closed.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: MKS INSTRUMENTS, INC.
    Inventors: David Neumeister, Bradly Lefevre, Kevin Grout, Youfan Gu