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:
Jul. 21, 2015
Filed:
Sep. 12, 2008
Nigel John Henry Holroyd, Riverside, CA (US);
Sharon Laraine Havercroft, Riverside, CA (US);
Garland Elmo Scott, Prospect, KY (US);
Nigel John Henry Holroyd, Riverside, CA (US);
Sharon Laraine Havercroft, Riverside, CA (US);
Garland Elmo Scott, Prospect, KY (US);
LUXFER GROUP LIMITED, Salford, GB;
Abstract
A method of treating the internal surface of a container for the storage of gas, such as a gas cylinder, that is made from or lined with aluminum or aluminum alloy. The method is characterized in that it comprises creating a freshly exposed aluminum surface, for example by the use of a wet grinding, in the presence of a surfactant. The surfactant is preferably derived from C-Ccarboxylic acids. The container for the storage of gas provides long-term gas stability. The internal surface of the container has a substantially continuous disturbed layer and is hydrophobic. It may also incorporate groups or species derived from the surfactant and/or comprise oxides or oxyhydroxides of aluminum.