WIRE)--May 18, 2004--Donaldson Company Inc. (NYSE:DCI),
a leading worldwide provider of filtration systems and
replacement parts, has recently been issued two patents
by the U.S. Patent office related to its proprietary
Ultra-Web(R) nanofiber filtration products.
"The nanotechnology in these patents represents
major breakthroughs made by Donaldson's Research &
Development team," said Tim Grafe, Director of
Nanofiber Media Products for Donaldson. "Our
'new and improved' Ultra-Web(R) media increases the
durability and useful filter life of Donaldson's previous
generations of filters and has improved performance
in high temperature and high humidity environments,
thus extending our product application range and the
filtration protection we can offer our customers."
new Ultra-Web(R) nanofibers are the smallest polymer
fibers in the filtration market. They are currently
used by Donaldson in the extended service life Donaldson
Endurance(TM) filters for medium- and heavy-duty engines,
Donaldson Torit(R) brand dust collectors, and in self-cleaning
filter systems used in the U.S. Army's Abrams M1 main
the company's two new patents are:
US Patent 6,716,274, issued on April 6, 2004. Titled
Air filter assembly for filtering an air stream to
remove particulate matter entrained in the stream,
this patent covers Donaldson's latest innovations
in Ultra-Web(R) nanofiber filter media technology
on a wide range of self-cleaning pulse jet filtration
US Patent 6,673,136, titled Air filtration arrangements
having fluted media constructions and methods, was
issued on January 6, 2004. This patent covers the
company's latest innovations in Ultra-Web(R) nanofiber
filter media when used in conjunction with the Donaldson
space saving PowerCore(TM) Filtration Technology.
PowerCore(TM) provides engine Original Equipment customers
with added value and design flexibility by reducing
the filter and air cleaner package size by up to 60%.
have now upgraded all of our electrospinning production
lines and nanofiber products to include the latest
patented nanotechnology," Grafe said. "We
are extremely pleased with our field results to date.
With these recently issued patents, and several more
pending U.S. and international patents covering additional
nanofiber innovations, configurations and uses, Donaldson
can continue to offer the latest filtration technology
to our customers."
Donaldson Company, Inc.
Company, Inc., headquartered in Minneapolis, is a
leading worldwide provider of filtration systems and
replacement parts. Founded in 1915, Donaldson is a
technology-driven company committed to satisfying
customer needs for filtration solutions through innovative
research and development. Donaldson serves customers
in the industrial and engine markets including dust
collection, power generation, specialty filtration,
compressed air purification, off-road equipment, industrial
compressors, and trucks. Our 10,000 employees contribute
to the company's success at over 30 manufacturing
locations around the world. In fiscal year 2003, Donaldson
reported sales of more than $1.2 billion and achieved
its 14th consecutive year of double-digit earnings
growth. Donaldson is a member of the S&P MidCap
400 Index and Donaldson shares are traded on the New
York Stock Exchange under the symbol DCI. Additional
company information is available at www.donaldson.com.