group limited type subsidiary industry glassmaking founded 1826 st helens headquarters st helens united kingdom number of locations germany is now central organisational hub products glass parent nsg group website pilkington.com pilkington group limited is a multinational glass manufacturing company headquartered in st helens united kingdom and a wholly owned subsidiary of the japan based nsg group . prior to its acquisition by nsg in 2006 it was an independent company listed on the london stock exchange and for a time was a constituent of the ftse 100 index . contents 1 history 1.1 litigation 1.2 takeover by nsg 2 operations 3 references 4 external links history edit the distinctive blue pilkington s head office a grade ii listed building constructed in 1959 63 designed by maxwell fry and jane drew steam rises from the hotties in st helens town centre in the 1970s water warmed by the pilkingtons factory is pumped into the canal and is warm enough to support tropical fish making it a popular fishing site . pilkington floatglass factory in halmstad pilkington glass in a mercedes benz a pilkington liveried trailer the company was founded in 1826 as a partnership between members of the pilkington and greenall families based in st helens lancashire . 1 the venture used the trading name of st helens crown glass company . 2 on the departure from the partnership of the last greenall in 1845 the firm became known as pilkington brothers . 3 in july 1894 the business was incorporated under the companies act 1862 as pilkington brothers limited . 2 4 pilkington was floated as a public company on the london stock exchange in 1970 . 5 it was for many years the biggest employer in the northwest industrial town . the distinctive blue glass head office tower block on alexandra business park off prescot road used as the firm s world hq and completed in 1964 still dominates the town s skyline . between 1953 and 1957 sir alastair pilkington and kenneth bickerstaff invented the float glass process a revolutionary method of high quality flat glass production by floating molten glass over a bath of molten tin avoiding the costly need to grind and polish plate glass to make it clear . 2 pilkington then allowed the float process to be used under licence by numerous manufacturers around the world . pilkington with its subsidiary triplex safety glass in which it gradually acquired a controlling interest also became a major world supplier of toughened and laminated safety glass to the automotive aerospace and building industries . 2 during the 1960s and 1970s pilkington used the flow of float royalties to invest in float glass plants in several countries including argentina australia canada and sweden ; also to acquire major existing flat and safety glass producers and plants in usa libbey owens ford germany and elsewhere . a monopolies commission report in 1967 concluded that pilkington and triplex operations were efficient and entrepreneurial and despite their high share of the uk glass trade operated in a manner suited to consumers best interests . 2 a rank and file strike in 1970 sparked off by an error in wage packets brought 8 000 workers out for nearly two months . the general and municipal workers union and trades union congress leadership failed to provide any support as they were too closely bound to management and government circles with the result that strike leaders were blacklisted . anti union legislation was introduced by central government . these events were recreated in ken loach s film the rank and file although the bbc insisted on a change in the name and location of the company so that the film is set at a wilkinsons in the west midlands . 6 in late 1985 pilkington was the subject of an unfriendly take over bid from btr industries a large british based conglomerate group . pilkington s efforts to reject the bid were assisted by its employees the town and some government ministers . their joint successful work was followed by a withdrawal of btrs offer in early 1986 . 7 litigation edit pilkington aggressively protected its patents and trade secrets through a network of licensing agreements with glass manufacturers around the world . the modern float technique pouring the molten glass on a layer of very pure molten tin became commercially widespread when alistair pilkington developed a practical version patented in the late 1950s and early 1960s . as pilkington plc owned all but one of the manufacturing plants around the world employing the float process pilkington had a monopoly . although the patents had expired by the early 1980s pilkington had licensed their use and required the licensees to keep the details of the float glass process secret . guardian industries had tried to challenge pilkington s dominance but had made a secret agreement to prevent new entrants into the market with guardian taking the lead to enable pilkington a british company to reduce its exposure to united states antitrust law . 8 in may 1994 the united states department of justice filed suit on the grounds that pilkington had created a cartel by exercising control over the markets in which its licensees could sell float glass and construct float glass manufacturing plants and over the customers within each market to which each licensee could serve . it was claimed this was a violation of the sherman antitrust act because pilkington s patents had expired and any trade secrets which it might have had in the process used by the licensees had long since become publicly known . 9 on the same day the government and pilkington filed a proposed consent decree which enjoined pilkington from enforcing these restrictions against its us licensees or against us non licensees or against non us licensees wishing to export either technology or glass products to the united states . the agreement came into force on 22 december 1994 and expired ten years later . 10 takeover by nsg edit in late 2005 the company received a takeover bid from the smaller japanese company nsg . the initial bid and the first revised bid were not accepted but on 16 february 2006 nsg increased its offer for the 80 % it did not already own to 165 pence per share 1.8 billion or 3.14 billion in total and this was accepted by pilkington s major institutional shareholders enabling nsg to compulsorily acquire by scheme of arrangement the smaller holdings of other shareholders 11 many of them being existing and retired employees who had not wished to support the takeover . the combined company would compete for global leadership in the glass industry with the leading japanese glassmaker asahi glass which had around a quarter of the global market at the time of the deal . pilkington had 19 % and nsg around half that . 12 the acquisition was completed in june 2006 after the european commission stated that it would not be opposed . 13 operations edit pilkington has developed a self cleaning coated float glass product called pilkington activ . this self cleaning glass has a coating which uses a method of photocatalysis to break down organic dirt with sunlight . the dirt is then washed away by the rain during a hydrophilic process . 14 pilkington has also developed and launched pilkington energikare energy efficient glazing which can increase the energy efficiency in buildings and reduce environmental impact . 15 references edit notes barker 1977 p. 31 a b c d e competition commission report 1967 barker 1977 p. 75 barker 1977 p. 171 barker 1977 p. 422 essay on the rank and file by john williams btr withdraws offer for pilkington international technologies consultants inc v pilkington plc case no. 94 17143 . united states court of appeals for the ninth circuit . 6 march 1998 . retrieved 30 march 2012 . professions and intellectual property section antitrust division united states department of justice 25 may 1994 complaint us v. pilkington plc and pilkington holdings inc. retrieved 11 march 2009 cs1 maint multiple names authors list link professions and intellectual property section antitrust division united states department of justice 22 december 1994 final judgment us v. pilkington plc and pilkington holdings inc. cv 94 345 tuc wdb retrieved 11 march 2009 cs1 maint multiple names authors list link nsg to proceed with recommended cash acquisition of pilkington plc . 27 february 2006 . retrieved 31 march 2012 . pilkington in japanese takeover case no comp m. 4173 nippon sheet glass pilkington pdf . 7 june 2006 . retrieved 31 march 2012 . pilkington self cleaning glass pilkington energikare bibliography barker t. c. 1977 the glassmakers pilkington 1826 1976 weidenfeld & nicolson isbn 0 297 76909 x external links edit wikimedia commons has media related to pilkington . official website official uk site pilkington energikare energy efficient glazing v t e glass makers and brands contemporary companies anchor hocking arc international ardagh group armashield asahi aurora glass foundry aventas group 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companies bakewell glass belmont glass company boston and sandwich glass company brockway glass carr lowrey glass company cambridge glass chance brothers clayton and bell dugan glass company duncan & miller dunbar glass fostoria glass company general glass industries gus crystal alexander gibbs gr nvik glasbruk hartford city glass company hazel atlas heisey hemingray glass company j. h. hobbs brockunier and company knox glass bottle company lavers barraud and westlake manufacture royale de glaces de miroirs millersburg glass company morris & co. nachtmann northwood glass company novelty glass company old dominion glass company james powell and sons ravenhead glass the root glass company seneca glass company shrigley and hunt sneath glass company venini & c. ward and hughes westmoreland glass company wheaton industries whitall tatum company white glass company worshipful company glassmakers a. h. heisey alastair pilkington antonio neri dante marioni edward d. libbey frederick carder friedrich henry clay fry henry crimmel henry william stiegel irving wightman colburn john adams john m. whitall lino tagliapietra michael joseph owens otto schott paolo venini richard m. atwater s. donald stookey salviati tomasz urbanowicz w. e. s. turner trademarks and brands activ bohemian glass bomex duran endural burmese glass chevron bead corelle corningware cranberry glass cristallo dragontrail favrile fire king gorilla glass macor millefiori murano glass opaline glass pyrex ravenhead glass tiffany glass vitrite vitrolite vycor waterford crystal wood s glass zerodur related articles list of defunct glassmaking companies v t e construction industry of the united kingdom construction economy of the united kingdom companies consultancies and support services amec amey arcadis architecture firms arup atkins faithful gould buro happold capita ch2m cundall davis langdon elliott wood expedition engineering flint & neill gifford hoare lea interserve mace mitie mott macdonald mouchel rps 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