Truncated icosahedral blocks
CA 1092816 A · Owner: Hogan, John P. · Inventors: Hogan, John P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The truncated icosahedral blocks are designed to meet one another along their truncation surfaces and thereby imitate an icosahedron's unique ability for three-dimensional intersection with another icosahedron, so that a line segment that defines the base of a pentangular pyramid on one icosahedron also defines the base of a pentangular pyramid on the other icosahedron.
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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 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.