Ablative imaging by proximity lithography
CA 2175678 A1 · Owner: Minnesota Mining And Manufacturing Company · Inventors: Dunn, Douglas S.; Stubbs, Daniel P.; Ouderkirk, Andrew J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes a method of creating a shaped image (13) in a workpiece (10) using a high energy source (12) with the method comprising positioning a layer (16) proximate the workpiece such that the layer prevents debris from the workpiece from dispersing, and directing radiation from the high energy source through the layer to the workpiece the layer substantially transparent to radiation emitted by the high energy source such that the high energy source is capable of forming the shaped image.
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 October 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2016.
- 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.