Special effects carrier
CA 2084849 C · Owner: Jensen, Gerald A. · Inventors: Adolphi, John; Surma, Michael; Lindenfelser, Jerry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A special effects carrier for use in a photographic camera for taking portraits of individuals or groups. The wheel-shaped special effects carrier contains masks which produce various special effects. One of the masks included on the carrier produces no special effects so that the carrier can be used whether or not a special effect is desired. The carrier is located a fixed distance behind the objective element of the zoom lens so that the photographer is able to focus the camera without having to compensate for the changing focal length of the zoom lens. The carrier is connected to a CPU which drives a motor to rotate the carrier. An optical sensor reads bar codes on the carrier and relays …
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 December 8, 1992 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 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.