Instrument for determining the distinctness of image of a paint film
CA 1110873 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Komodromos, Nicos M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable instrument quantitatively determining the distinctness of image of a sample paint film by providing comparison of the film with several standard films of known distinctness of image is provided. The instrument displays the sample and one of the standards within an enclosed casing while an image forming pattern is projected simultaneously on both by a light source within the instrument. By changing the standard which is displayed, an observer compares the distinctness of image of the sample with the known values of several standards until a match is found.
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 October 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 1998.
- 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.