A timeline of United States inventions (1946–1991) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the era of the Cold War, which have been achieved by inventors who are either native-born or naturalized citizens of the United States. inventions from other historical time periods, please see Timeline of United States inventions (before 1890), Timeline of United States inventions (1890–1945), and Timeline of United States inventions (after 1991).
However, the Uruguay Round Agreements Act of 1994 (URAA) changed the patent term in the United States to a total of 20 years, effective for patent applications filed on or after June 8, 1995, thus bringing United States patent law further into conformity with international patent law. In 1946, American theoretical astrophysicist Lyman Spitzer was the first to conceive the idea of a telescope in outer space, a decade before the Soviet Union launched the first artificial satellite, Sputnik into orbit.
The modern-day provisions of the law applied to inventions are laid out in Title 35 of the United States Code (Ch. After lobbying in the 1960s and 1970s for such a system to be built, Spitzer's vision ultimately materialized into the world's first space-based optical telescope, Hubble Space Telescope, which was launched on April 20, 1990 by the Space Shuttle Discovery (STS-31).
1946 Blowout preventer (annular) An annular blowout preventer is a large valve that uses a wedge to seal off a wellhead.
It has a donut-like rubber seal, known as an elastomeric packing unit, reinforced with steel ribs.
During drilling or well interventions, the valve may be closed if overpressure from an underground zone causes formation fluids such as oil or natural gas to enter the wellbore and threaten the rig.
The annular blowout preventer was invented by Granville Sloan Knox in 1946 who received a patent on September 9, 1952.
Tupperware is airtight plastic containers used for the preparation, storage, containment, and serving of perishable food in the kitchen and home.
Tupperware was invented in 1946 by American chemist Earl Silas Tupper who devised a method of purifying black polyethylene slag, a waste product produced in oil refinement, into a molded substance that was flexible, tough, non-porous, non-greasy and translucent.
Available in many colors, the plastic containers with "burp seal" did not become a commercial success until Brownie Wise, a Florida housewife, began throwing Tupperware parties in 1951 in order to demonstrate the product and explain the features.
1946 Spoonplug A spoonplug is a form of fishing lure. "Buck" Perry, then a physics and math teacher in Hickory, North Carolina.
Elwood Perry combined science with a logical approach to fishing to create a "total fishing system." He is credited as being the father of structure fishing and was later inducted into the National Freshwater Fishing Hall of Fame.