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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6068709 Bath and process for the phosphatization of metallic substrates, concentrates for the preparation of said bath and metallic substrates having been subjected to a treatment by said bath and processExpiredSep 02, 97May 30, 00[C23C]
5472476 Anticlumping composition and anticlumping process for fertilizersExpiredFeb 16, 94Dec 05, 95[C05G]
5460694 Process for the treatment of aluminum based substrates for the purpose of anodic oxidation, bath used in said process and concentrate to prepare the bathExpiredJun 17, 93Oct 24, 95[C23F]
5372748 Agent inhibiting the corrosive characteristics of nitrogenous fertilizing solutions, process using the said agent and nitrogenous fertilizing solutions containing the said agentExpiredApr 07, 93Dec 13, 94[C23F]
5330659 Process for denaturating water-dilutable paints and solvent-based paints and denaturation solution used in this processExpiredJul 30, 92Jul 19, 94[C02F]
5259884 Process adapted to provide on a metallic substrate a protective coating based on hexavalent chromium, bath used in the said process and commercial form of the components of the bathExpiredNov 06, 90Nov 09, 93[C23C]
5045130 Solution and process for combined phosphatizationExpiredJun 23, 88Sep 03, 91[C23C]
4843119 Adhesive product for the bonding of steel, particularly in the automotive sheetwork operationsExpiredJan 22, 88Jun 27, 89[C08L]
4813999 Herbicidal products based on bromoxynil and/or ioxynil estersExpiredDec 09, 86Mar 21, 89[A01N]
4678519 Method of zinc phosphatization, activation and refining bath used in said method and corresponding concentrateExpiredOct 31, 85Jul 07, 87[C23C]
4670066 Process for the treatment by chemical conversion of substrates of zinc or of one of its alloys, concentrate and bath used for performing this processExpiredAug 15, 85Jun 02, 87[C23C]
4668307 Bath and process for the chemical conversion of metal substrates with zincExpiredDec 20, 85May 26, 87[C23C]
4666613 Process and agents for controlling the swelling of clays in the presence of sea-water and clay-based mudsExpiredApr 16, 84May 19, 87[C09K]
4497666 Process for the treatment of phosphatized metal surfaces with a composition comprising trivalent titaniumExpiredJan 28, 83Feb 05, 85[C23C, C23F]
4311536 Processes of phosphating surfaces of iron and of steel with manganeseExpiredJul 03, 80Jan 19, 82[C23F]

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