Intraoral dental radiographic film packet improvement
CA 1320378 C · Owner: Liese, Elmer William Jr. · Inventors: Liese, Elmer William Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A comfort-enhancing improvement upon u known dental film packet having sensitized film (10) and protective opaque (12, 14) sheets enclosed by a light-tight envelope (16) that includes an opposed pair of generally parallel walls (16b and 16c 16f), covering the sheets (10, 12, 14) those walls (16b, and 16c, 16f) being joined together along facing marginal areas thereof (16bm and 16cm, 16fm) surrounding the sheets (10, 12, 14) so as to define a main body portion (16MB) and a perimetric edge portion (16PE) of the envelope (16). The improvement is characterized by a pliant bead (B) of substantially non-porous, non-toxic, polymeric elastomeric material, preferably a silicone resin that is molded …
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
- Granted July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 2010.
- 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.