Expired Canadian patentCanada
Method for correcting volume-phase-gelatin-holograms bragg's angle deviation
CA 1212566 A · Owner: Ncr Corporation · Inventors: Gorin, Brian A.; Bora, Nayana S.; Ho, Ping-Pei
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Bragg's angle deviation of volume-phasegelatin holograms is corrected by increasing the water content of the developed hologram and then reducing the water content of the hologram until the Bragg's angle deviation is zero.
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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 October 14, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 30, 1984
GrantedOctober 14, 1986
Term endedOctober 14, 2003
Patent numberCA 1212566 A
Classification (IPC)G03H1/18 +1 more
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.