Musical instrument strings and method for making same
CA 2355034 A1 · Owner: Rohrbacher, Peter J. · Inventors: Parker, Anthony; Rohrbacher, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved musical instrument string combines the attributes of superior corrosion resistance, low stiffness, low tension at pitch and long life , during storage, and end use. The potential for galvanic coupling between the winding and core of, wound strings is minimized, or eliminated through the use of a cathodic core which, is preferably comprised of a titanium alloy; and metal windings of either titanium, nickel, a nickel alloy, or a surface modified copper alloy where the , preferred, surface modifier is a compound from the azole family. The resultant strings are, lower in stiffness, and impart a lower cumulative tension on stringed instruments, when compared to conventional …
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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 August 14, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2023.
- 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
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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.