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GRACE RECEIVES SETTLEMENT FROM POLYGUARD

 GRACE RECEIVES SETTLEMENT FROM POLYGUARD
 CAMBRIDGE, Mass., March 3 /PRNewswire/ -- Grace Construction


Products Division and Polyguard Products, Inc., Ennis, Texas, today announced the settlement of a lawsuit involving a Grace patent. Grace's suit claimed Polyguard was infringing U.S. Patent No. 4,897,313, owned by Grace, for water-based latex primer used for applying waterproofing membranes to concrete. Polyguard had denied infringement and had alleged the patent to be invalid. Grace filed suit in the U.S. District Court in Houston against Polyguard in July 1991.
 As a result of the settlement, Polyguard has now stopped its commercial activity with the water-based latex primer involved and paid an undisclosed sum as a royalty for its past commercial activity with the primer. By agreement, the lawsuit has been dismissed.
 Grace Construction Products is a leading manufacturer of waterproofing and fireproofing products, concrete admixtures, cement processing additives and roof and wall insulation.
 -0- 3/3/92
 /CONTACT: Jim Adams of Grace Construction Products Division, 617-876-1400, ext. 3682/ CO: Grace Construction Products Division; Polyguard Products, Inc. ST: Massachusetts, Texas IN: CST SU:


SS-JJ -- FL008 -- 4523 03/03/92 13:54 EST
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Publication:PR Newswire
Date:Mar 3, 1992
Words:188
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