ENGLISH CLAYS LOVERING POCHIN & COMPANY LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4704899 Measurement of physical properties of the solid component of a slurryExpiredJan 16, 85Nov 10, 87[G01N]
4653914 Monitoring deflocculated particles in a suspensionExpiredMar 14, 85Mar 31, 87[G01N]
4546043 Hollow irregular multifilament yarn and process and spinneret for producing the sameExpiredJan 17, 85Oct 08, 85[D02G]
4503177 Stabilization of photochromic compounds, and the use of stabilized photochromic compoundsExpiredJul 06, 82Mar 05, 85[C09K, C09D]
4447327 Pressure filtersExpiredOct 22, 79May 08, 84[B01D]
4430249 Preparation of aqueous suspensions of talcExpiredOct 22, 81Feb 07, 84[C04B, C09C, B01J, C08K]
4427452 Filled elastomer compositionsExpiredSep 02, 82Jan 24, 84[C09C]
4339042 Treatment of mineralsExpiredFeb 28, 79Jul 13, 82[B03D, B03B, C09C]
4325514 Comminution of mineralsExpiredSep 10, 79Apr 20, 82[B02C]
4316798 Separating chamber for a magnetic separatorExpiredAug 07, 80Feb 23, 82[B03C, B01D]
4304527 System for pumping an abrasive or corrosive fluidExpiredApr 11, 79Dec 08, 81[F04F]
4301848 Bags for containing bulk materialExpiredDec 12, 79Nov 24, 81[B65D]
4301001 Process for concentrating mica in a mixture of sand and micaExpiredMay 14, 80Nov 17, 81[B07B]
4298478 Method of, and a magnetic separator for, separating magnetizable particles from a fluidExpiredAug 21, 79Nov 03, 81[B01D]
4282745 Particle size determinationExpiredMar 22, 79Aug 11, 81[G01N]
4278208 Comminution of materialsExpiredJul 24, 79Jul 14, 81[B02C]
4251351 Processing of calcium carbonate mineralsExpiredJul 24, 78Feb 17, 81[B03B]
4214986 Magnetic separator for separating magnetizable particles from a fluid, method and apparatusExpiredOct 12, 78Jul 29, 80[B01D]
4210490 Method of manufacturing paper or cardboard productsExpiredDec 19, 78Jul 01, 80[D21H]
4208277 Rotary reciprocating magnetic separator with upward feedExpiredDec 12, 77Jun 17, 80[B03C]

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