Economics Laboratory, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4769159 Institutional softener containing cationic surfactant and organic acidExpiredFeb 18, 86Sep 06, 88[D04B]
4690305 Solid block chemical dispenser for cleaning systemsExpiredNov 06, 85Sep 01, 87[B67D, B01D]
4675215 Method and composition for the inhibition of corrosionExpiredSep 27, 85Jun 23, 87[B05D]
4632741 Synthesis of alkyl phosphinate salts and bis(alkyl) phosphinate saltsExpiredMar 10, 86Dec 30, 86[B01J]
4624713 Solid rinse aids and methods of warewashing utilizing solid rinse aidsExpiredNov 15, 84Nov 25, 86[B67C]
4617272 Enzyme drying processExpiredApr 25, 84Oct 14, 86[C12N]
4594175 Mechanical dishwashing rinse composition having a low foaming sulfonic acid rinsing agent, a hydrotrope and a source of active halogenExpiredAug 29, 84Jun 10, 86[C11D]
4594176 Polyalkylene polyamine-glycol accelerators for paint removal compositionsExpiredJun 13, 85Jun 10, 86[C11D]
4590014 Synthesis of alkyl phosphinate saltsExpiredSep 06, 84May 20, 86[C07F, C07C]
4587030 Foamable, acidic cleaning compositionsExpiredJun 13, 84May 06, 86[C11D]
4579676 Low-phosphate liquid cleaning compositionExpiredDec 17, 84Apr 01, 86[C11D]
4571327 Solid cast detergent dispenser with insert for holding noncompatible chemicalExpiredMar 22, 84Feb 18, 86[B01D]
4537705 Aqueous alkaline polyamine paint stripping compositionsExpiredApr 25, 84Aug 27, 85[C11D]
4512908 Highly alkaline liquid warewashing emulsion stabilized by clay thickenerExpiredJul 05, 83Apr 23, 85[C11D]
D278515 BottleExpiredJun 29, 82Apr 23, 85[]
4511311 Fluid system control apparatus and methodExpiredSep 01, 82Apr 16, 85[F04B]
4509402 Magnetic reversing mechanismExpiredJun 08, 83Apr 09, 85[F01L]
4495225 Method and composition for the prevention or inhibition of corrosionExpiredMar 21, 84Jan 22, 85[C09K, B05D, C04B]
4491988 In-tank toilet bowl cleaner dispenserExpiredJan 28, 83Jan 08, 85[E03D]
4464098 Injection pumpExpiredSep 13, 82Aug 07, 84[F04B]

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