Patents by Inventor Jan Sietsma

Jan Sietsma 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).

  • Method for attenuating noise produced by pipes and pipe arrangement
    Patent number: 9500302
    Abstract: The present invention relates to a method for attenuating noise produced by steam flowing through a pipe, comprising the steps of providing a pipe arrangement (10), which comprises an inner pipe (12) that defines in its inside an inner flow channel (14) which progresses in pipe direction (16) of the inner pipe (12), and an outer pipe (18) that surrounds the inner pipe (12) and progresses substantially parallel thereto, thereby defining an outer flow channel (20) between the two pipes (12, 18) which is substantially parallel to the inner flow channel (14), establishing a steam flow (22) in and along the inner flow channel (14), and establishing a water flow (28) in and along the outer flow channel (20), said water flow (28) being adapted to attenuate a noise produced by said steam flow (22) flowing through the inner flow channel (14).
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 22, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Alexander Cornelis Geerlings, Jan Sietsma
  • METHOD FOR ATTENUATING NOISE PRODUCED BY PIPES AND PIPE ARRANGEMENT
    Publication number: 20140202548
    Abstract: The present invention relates to a method for attenuating noise produced by steam flowing through a pipe, comprising the steps of providing a pipe arrangement (10), which comprises an inner pipe (12) that defines in its inside an inner flow channel (14) which progresses in pipe direction (16) of the inner pipe (12), and an outer pipe (18) that surrounds the inner pipe (12) and progresses substantially parallel thereto, thereby defining an outer flow channel (20) between the two pipes (12, 18) which is substantially parallel to the inner flow channel (14), establishing a steam flow (22) in and along the inner flow channel (14), and establishing a water flow (28) in and along the outer flow channel (20), said water flow (28) being adapted to attenuate a noise produced by said steam flow (22) flowing through the inner flow channel (14).
    Type: Application
    Filed: August 22, 2012
    Publication date: July 24, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Alexander Cornelis Geerlings, Jan Sietsma