Method of manufacturing a disposable cervical cap
CA 2318121 A1 · Owner: Lavean, Michael G. · Inventors: Lavean, Michael G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an improved method of manufacturing a disposable cervical cap by injection molding and cervical caps produced thereby. The method includes providing an injection point at a top portion location of a heated mold cavity and injecting an elastomeric molding material into the heated mold cavity at the injection point. The material flows downwardly throughout the mold cavity, producing a molded cap (10) having a substantially thickened annular rim (18) and a form-assuming dome (12) with a generally thickened top portion (20) having an interior and exterior surface and a substantially thin middle portion (22).
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 January 21, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2020.
- 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.