Optical taper
CA 2008515 C · Owner: Universite D'Ottawa/ University Of Ottawa · Inventors: Kavenrad, Mohsen; Gang, Yun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical receiver comprises the combination of: a photodiode having a surface area of suitable dimensions to permit reception of a signal at a high bit rate; and an optical taper having a head and a tail. The head is of greater diameter than the tail and, co-axial with the tail. The tail is aligned with the photodiode.
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 24, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2012.
- 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.