High-capacity getter pump
CA 2117681 C · Owner: Saes Getters S.P.A. · Inventors: Ferrario, Bruno; Manini, Paolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved high-capacity getter pump, comprising a plurality of porous sintered piled-up annuli made from a non-evaporable getter material and having: (i) a first planar surface having a central hole; (ii) a second planar surface having a broader, central hole, parallel to said first surface and spaced therefrom by a distance "d" of 1-10.5 mm; (iii) a third intermediate planar surface, interposed between said first and second surfaces spaced from said , first surface by a thickness "t" of 0.5-5.0 mm and having a hole coincident with the hole of said first surface; wherein the first surface of a subsequent annulus is in contact with the second surface of a preceding annulus and wherein …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 3, 1993 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.