Hollow diamond cut rope chain and method of making same
CA 2123575 C · Owner: Briceno, Godofredo Molina · Inventors: Briceno, Godofredo Molina; Strobel, Kalman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links (10), there is produced new hollow diamond cut jewelry rope chain (1) which results in a product weighing, up to 60 % less than its solid counterpart but which in its aesthetic looks is similar to solid diamond cut jewelry chain (1) and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar.
Read the whole patent
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 June 5, 1992 and granted December 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2014.
- 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.