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John Stenhouse's respirator. John Stenhouse was born in Barrhead in Glasgow on 21 October 1809. He was the eldest son of William Stenhouse, a calico-printer in the family firm of John Stenhouse & Co of 302 High Street, [2] Glasgow, and Elizabeth Currie; [3] he was the only one of their children to survive beyond infancy.
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
Inventors in Europe included John Stenhouse, a Scottish chemist, who investigated the power of charcoal in its various forms, to capture and hold large volumes of gas. He built one of the first respirators able to remove toxic gases from the air, paving the way for activated charcoal to become the most widely used filter for respirators. [8]
Patent Office Head [1] Began service: Ended service: Commissioners for the Promotion of Useful Arts or Patent Board [2] Edmund Randolph Henry Knox Thomas Jefferson: 1790: 1793 Secretary of State [3] [2] Edmund Randolph: 1794: 1795 Timothy Pickering: 1795: May 12, 1800 John Marshall: May 13, 1800: March 4, 1801 James Madison: March 5, 1801: 1802 ...
The first patent denoted with the serial numbering system still in use today was issued on July 13, 1836, and was given the number 1. [3] A number of X-Patents were recovered in 2004 from the Dartmouth College archives. [4] Of the 14 found, 10 were granted to Samuel Morey including the first known patent for an internal combustion engine.
Mills graduated BSc in 1863 and gained a doctorate (DSc) in 1865. From 1861 he worked under Prof John Stenhouse, with colleagues also including William A. Tilden. [1] He was elected a Fellow of the Royal Society of London on 4 June 1874. [2] He moved to Glasgow around 1876 as Professor of Chemistry.
Erythritol tetranitrate (ETN) is an explosive compound chemically similar to PETN, [1] though it is thought to be slightly more sensitive to friction and impact.. Like many nitrate esters, ETN acts as a vasodilator, and was the active ingredient in the original "sustained release" tablets, made under a process patent in the early 1950s, called "nitroglyn".