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:
Nov. 09, 1993
Filed:
Apr. 24, 1991
Applicant:
Inventor:
Michael D Brandt, Chicago, IL (US);
Assignee:
American Air Liquide, Countryside, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
73 / ; 73 3103 ; 137597 ; 1376252 ; 13762543 ;
Abstract
A counterflow valve for switching between flowing gas streams without undesirable interaction of the gas with any dead volume area or non-metallic surfaces or both, which valve contains a four-way double ported ball valve having a first and second input and a first and second output, first and second inlet duct, a back pressure regulator, adjustable flow control orifice and a valve outlet duct.
Quick Actions:
Brandt, Michael. (1993). Counterflow valve (U.S. Patent No. 5259233). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5259233
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile