Canadian Invention

Garbage Bag - Harry Wasylyk
The familiar green plastic garbage bag (made from polyethylene) was invented by Harry Wasylyk in 1950.
Harry Wasylyk was a Canadian inventor from Winnipeg, Manitoba, who together with Larry Hansen of Lindsay, Ontario, invented the disposable green polyethylene garbage bag. Garbage bags were first intended for commercial use rather than home use - the bags were first sold to the Winnipeg General Hospital. However, Hansen worked for the Union Carbide Company in Lindsay, who bought the invention from Wasylyk and Hansen. Union Carbide manufactured the first green garbage bags under the name Glad Garbage bags for home use in the late 1960s. How Garbage Bags are Made
Garbage bags are made from low density polyethylene, which was invented in 1942. Low density polyethylene is soft, stretchy, and water and air proof. Polyethylene is delivered in the form of small resin pellets or beads. By a process called extrusion, the hard beads are converted into bags of plastic.
The hard polyethylene beads are heated to a temperature of 200 degrees centigrade. The molten polyethylene is put under high pressure and mixed with agents that provide color and make the plastic pliable. The prepared plastic polyethylene is blown into one long tube of bagging, which is then cooled, collapsed, cut to the right individual length, and sealed on one end to make a garbage bag.

Reginald Fessenden, the Canadian inventor of radio telephony

The achievement of a brilliant Canadian inventor, Reginald Aubrey Fessenden, is generally ignored and largely unknown. On December 24, 1906, at 9 P.M. eastern standard time, Reginald Fessenden transmitted human voices from Brant Rock near Boston, Massachusetts to several ships at sea owned by the United Fruit Company.
The host of the broadcast was Fessenden. After giving a resume of the program Fessenden played

a recording of Handel's "Largo" on an Ediphone thus establishing two records - the first recording of the first broadcast. Fessenden then dazzled his listeners with his talent as a violinist playing appropriately for the Christmas season, "Oh Holy Night" and actually singing the last verse as he played. Mrs. Helen Fessenden and Fessenden's secretary Miss Bent, had promised to read seasonal passages from the Bible including, "Glory to God in the highest -and on earth peace to men of good will," but when the time came to perform they stood speechless, paralyzed with mike fright. Fessenden took over for them and concluded the broadcast by extending Christmas greetings to his listeners - as well as asking them to write and report to him on the broadcast wherever they were.
The mail response confirmed that Fessenden had successfully invented radio as we know it. Technically, he had invented radio telephony or what radio listeners would call "real" radio as opposed to Marconi's Morse code broadcasting. Fessenden could truly lay claim to be the inventor of radio and he fully expected the world to beat a path to his door. Instead, he never received his due recognition, lost control of his patents and the ensuing revenue which made other inventors and companies immensely wealthy. Even today the Encyclopedia Canadiana does not give him a separate listing. Mention of him is only included under the listing for his mother Clementina who established Empire Day in Canada. Reginald is mentioned as one of her four sons, "inventor of the wireless telephone, the radio compass and the visible bullet for machine guns, he also invented the first television set in North America in 1919."