The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Feb. 28, 2002
Applicant:
Inventor:
Zheji Liu, Olean, NY (US);
Assignee:
Dresser-Rand Company, Olean, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 2/944 ;
U.S. Cl.
CPC ...
F04D 2/944 ;
Abstract
A gas compression apparatus and method according to which an impeller rotates to flow fluid through a casing, and a plurality of vanes are mounted on a plate in the casing. A series of cells are formed in the plate to form an array of acoustic resonators to attenuate acoustic energy generated by the impeller.
Liu, Zheji. (2003). Gas compression apparatus and method with noise attenuation (U.S. Patent No. 6669436). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6669436
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile