Windshield for automobiles
CA 2017089 C · Owner: Nippon Sheet Glass Co. Ltd. · Inventors: Yoshizawa, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A windshield device for an automobile is in the form of a glass sheet having an S-shaped vertical cross section. The windshield device comprises an automobile body having a window frame, and a windshield fixed to the window frame. The windshield has vertical cross sections having profile lines represented by curves, except at opposite sides of the windshield. Each of the curves has a minimal point in an orthogonal coordinate system having a horizontal axis represented by a straight line connecting upper and lower ends of the windshield in the vertical cross section. The minimal point is positioned in a visual area in which a portion of the automobile body is seen through the windshield …
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 May 17, 1990 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 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.