Hi Max,
The company name was Riihimäen Lasi Oy well before 1988 - quick google in Finnish brought some reference to Riihimäen Lasi Oy from 1910. Ahlström Riihimäen Lasi Oy changed it's name to Karhulan Lasi Oy at some point. Today Karhulan Lasi Oy produces packing material out of glass for medical, food and brewery industry according to one recent document I found on the web. Karhulan Lasi Oy now belongs to Owens-Illinois, Inc.
According to book that I have, "Moderne Zeiten - Finnisches Glass 1929 -1999", Riihimäen Lasi ceased to produce studio glass (my translation for "in Handarbeit hergestelltem Glass") in 1976. I would guess that the reference to Riihimäen Lasi ceasing its operations in early 90's probably is meant to indicate that the company stopped producing any kind of decorative glass then (but couldn't really find any conclusive evidence, i.e. no full history recount of Riihimäen Lasi). I would also speculate that was when the name changed to ARL.
Regards,
TMaritta
An old one but just in case someone (else) bumps in here I'll define:
"Osakeyhtiö Riihimäki" (shortened "Oy Riihimäki", in which the "Oy" stands for a Limited company or alike: "Ltd.") was founded in 1910
The name was changed to Riihimäen Lasi Oy in 1937. ( "the glass of Riihimäki Ltd." in English)
Hand made glass was no longer produced after 1976 and they continued with automated machine pressed glass as well as packaging glass and plastics.
The name was changed to Ahlström Riihimäen lasi Oy in 1989 just to arrange for the discontinuing of operation in 1990.
(Ahlström (company "A.Ahlström Oy") had acquired Riihimäen lasi's ownership in 1985.)
This was about company names. An other thing is the labels or marks they have used. In some they only print "Riihimäki" for short - that is the name of the city.
One shouldn't, however, get mixed up with another Riihimäki situated glass works ie. "Kumela Oy" that also had "Riihimäki" on their marks.
