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. 28, 2006
Filed:
Jan. 20, 2004
Applicants:
Roberto Carboneri, Settimo Torinese, IT;
Sandro Vittozzi, Turin, IT;
Inventors:
Roberto Carboneri, Settimo Torinese, IT;
Sandro Vittozzi, Turin, IT;
Assignee:
Varian S.p.A., Turin, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gas-selective permeable membrane () utilisable in a leak detector for a gas, more particularly helium, comprising a sheet-like body () on which at least one reduced thickness area () is defined by removing a material from the sheet-like body. This at least one reduced thickness area () being permeable to at least one gas and formed so as that it is partly surrounded by a thicker and substantially gas-impermeable area () ensuring the structural strength of the membrane.