Artur Fischer from plastic materials (Polyamide) and is available in various shapes and sizes since 1958 (see Wall plug). Fischer held over 1100 patents and overtook Thomas Alva Edison, who held 1093 patents. Fischer also held 5867 trade rights and invented fischertechnik. Further inventions are (bone-)plugs for fixing bone fractures and one of Fischer’s most recent inventions is a gadget that makes it possible to hold and cut the top off an egg of any size. He got started on the problem when a hotel owner complained to him that his guests, on opening their boiled eggs for breakfast, always made a
Schlumberger Canada Ltd v Canada (Commissioner of Patents) Schlumberger Canada Ltd v Canada (Commissioner of Patents) Schlumberger Canada Ltd v Canada (Commissioner of Patents) is a decision of the Federal Court of Appeal concerning the patentability of software inventions within the context of the Patent Act (Canada). At issue was the patentability of a method of combining and analyzing borehole measurements for oil and gas exploration using a computer programmed according to mathematical formulas. The Federal Court of Appeal held that the use of a computer "does not change the nature" of the discovered invention and that the process at issue was a "mere scientific principle or abstract