Recording elements comprising write-once thin film alloy layers
CA 1263018 C · Owner: Preuss, Donald R. · Inventors: Pan, Kee-Chuan; Tyan, Yuan-Sheng; Preuss, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
i-, RECORDING ELEMENTS COMPRISING, WRITE-ONCE THIN FILM ALLOY LAYERS Abstract of the Disclosure, Optical recording and record elements are provided, The elements comprise a write-once amorphous thin-film optical recording layer of an alloy having a composition within a polygon in a ternary composition diagram of antimony, zinc, and tin; wherein, a) the composition diagram is according to Figure 7 herein; and, b) the polygon has the following vertices and corresponding coordinates in atom percent:,
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 November 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 21, 2006.
- 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.