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The Patent Cooperation Treaty (PCT) is an international patent law treaty, concluded in 1970. It provides a unified procedure for filing patent applications to protect inventions in each of its contracting states. A patent application filed under the PCT is called an international application, or PCT application.
pct, an abbreviation for "%" PCT theorem, on parity, charge and time inversions; Perceptual control theory, a model of behavior; Personal Communication Telephone, a mobile telephone service; Polychlorinated terphenyl, an industrial chemical; Polycyclohexylenedimethylene terephthalate, a thermoplastic polyester
It is often denoted using the percent sign (%), [1] although the abbreviations pct., pct, and sometimes pc are also used. [2] A percentage is a dimensionless number (pure number), primarily used for expressing proportions, but percent is nonetheless a unit of measurement in its orthography and usage. [3]
Perceptual control theory (PCT) is a model of behavior based on the properties of negative feedback control loops. A control loop maintains a sensed variable at or near a reference value by means of the effects of its outputs upon that variable, as mediated by physical properties of the environment.
Procalcitonin (PCT) is a peptide precursor of the hormone calcitonin, the latter being involved with calcium homeostasis.It arises once preprocalcitonin is cleaved by endopeptidase. [1]
The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years". The 1836 Patent Act (5 Stat. 117, 119, 5) provided (in addition to the fourteen-year term) an extension "for the term of seven years from and after the expiration of the first term" in certain circumstances, when the inventor hasn't got "a reasonable remuneration for ...
The Pacific Crest Trail (PCT), officially designated as the Pacific Crest National Scenic Trail, is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Cascade and Sierra Nevada mountain ranges, which lie 100 to 150 miles (160 to 240 km) east of the U.S. Pacific coast.
PCT is a chronic condition, with external symptoms often subsiding and recurring as a result of multiple factors. In addition to the skin lesions, chronic liver disease is very common in patients with sporadic PCT. This involves hepatic fibrosis (scarring of the liver), and inflammation.