CA1178864A — Intrauterine contraceptive devices and methods of manufacturing such devices
Assigned to BANSON ENTERPRISES Inc · Expires 1984-12-04 · 41y expired
What this patent protects
ABSTRACT OF THE DISCLOSURE Disclosed is a novel I.U.D. in the shape of a "T". In one embodiment, a nylon thread has threaded upon it copper sleeves and is disposed in a mold. Injected into the mold and about the thread is polyethylene,which engages the copper sl…
USPTO Abstract
ABSTRACT OF THE DISCLOSURE Disclosed is a novel I.U.D. in the shape of a "T". In one embodiment, a nylon thread has threaded upon it copper sleeves and is disposed in a mold. Injected into the mold and about the thread is polyethylene,which engages the copper sleeves The polyethylene has a lower melting point than the thread. In another embodiment, a copper helix is formed about a length of teflon spaghetti and cut into lengths. The combined spaghetti and helix is disposed into a "T"-shaped mold, and a second plastic,having a lower melting point than the teflon, is injection-molded through the spaghetti so that the spaghetti forms an exoskeleton.
Drugs covered by this patent
- Jadelle (LEVONORGESTREL) · Fdn Consumer
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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