Wood preservation these pressure treatments routinely protect wood for 40 years in most applications. Creosote was the first wood preservative to gain industrial importance more than 150 years ago and it is still widely used today for protection of industrial timber components where long service life is essential. Creosote is a tar-based preservative that is commonly used for utility poles and railroad ties (UK: railway sleepers). Creosote is one of the oldest wood preservatives, and was originally derived from a wood distillate, but now, virtually all creosote is manufactured from the distillation of coal tar. Creosote is regulated as a pesticide, and
Wright's Coal Tar Soap Herbert Cassin Wright (chairman), Ernest Albert Umney (vice-chairman), Ernest Blakesley Layman, James Knight, James Hamerton, and Reginald Edward Conder. Hampshire Museum has four "Coal Tar Vaporizers" made by Wright, Layman & Umney in the early 20th century, and some bill-heads (invoices) which were sent to one of their customers, Messrs Charles Mumby & Co, lemonade manufacturers of Gosport. In 1949 the company sued a trader who used a similar name. The law at the time relating to trademarks was covered by the Trade Marks Act 1938. Case law shows that a similar name is not always certain to lead to