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:
Sep. 07, 2004
Filed:
Apr. 02, 2002
Ashok V. Joshi, Salt Lake City, UT (US);
Strahinja K. Zecevic, Salt Lake City, UT (US);
Microlin, L.C., Salt Lake City, UT (US);
Abstract
A storage stable hydrogen cell comprising an anode cap subassembly, cathode can subassembly, and a grommet is disclosed. For one embodiment the cathode in the cathode can subassembly is configured for contact with the electrolyte. The cathode is hydrogen permeable and substantially impermeable to O , CO and water. In turn, the cathode can preclude the passage of O , CO and water into and out of the cell, and simultaneously can facilitate the permeation of hydrogen through at least one aperture in the cell. In another embodiment, a commercially available Zn-air cell is converted into storage stable H cells by sealing a membrane structure around the apertures of the Zn-air cell. Such membrane precludes the passage of O , CO and water into and out of cell but allows the passage of hydrogen generated in the cell through the aperture of the cell and through the membrane.