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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.
Woodcut of Stenhouse's mask. In 1848, the first US patent for an air-purifying respirator was granted to Lewis P. Haslett [5] for his 'Haslett's Lung Protector,' which filtered dust from the air using one-way clapper valves and a filter made of moistened wool or a similar porous substance. [6]
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 .
One of tallest (nearly 24 inches) and heaviest (17.5 pounds) air purifiers tested, the Winix 5500-2 Air Purifier is ideal for small-to-medium rooms (up to 360 square feet), with a True HEPA filter ...
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.
The company announced in May 2019 that it would open a U.S.-based manufacturing plant in Polk County, Florida, which was the first in the Tampa Bay Area. [16] The company released the Molekule Air Mini, a miniature version of its Molekule Air purifier, in October 2019. [6]
Use a humidifier and/or air purifier Environmental adjustments can make a significant difference too, says Dr. Mercola. Try using a humidifier to “maintain humidity levels between 35-45% in your ...
The office is headed by the under secretary of commerce for intellectual property and director of the United States Patent and Trademark Office. As of December 2024 [update] , Derrick Brent is acting undersecretary and director, [ 9 ] having taken on that role upon the resignation of Kathi Vidal on December 13, 2024.