Patent Yard Sign in
Expired Canadian patentCanada

Lens-like radiant energy transmission control means

CA 1264282 C · Owner: Johnson, Roger N. · Inventors: Johnson, Roger N.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Abstract, The control means 10 are interposed lens-like between the radiant energy source 6 and the area to be irradiated and, comprise a honeycomb-like structure 18 of open ended cells 22 that are adapted to transmit the energy while imaging it reflectively on the area to be irradiated in more or less intensified form than the source alone would provide by direct transmission to the area depending on the location of the source with respect to the structure and the focal point thereof.

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 January 9, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1985
GrantedJanuary 9, 1990
Term endedJanuary 9, 2007
Patent numberCA 1264282 C
Classification (IPC)F23D14/12

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedAug 16, 1985Patent grantedJan 9, 1990Term endedJan 9, 2007

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.