Industrial Filter & Pump Mfg. Co.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6113664 Flange densification for filter candlesExpiredJun 08, 98Sep 05, 00[B01D]
5917064 Filter with heated tube sheetExpiredJan 02, 96Jun 29, 99[B01D]
5766290 Cross flow filter designExpiredNov 19, 96Jun 16, 98[C04B, B01D]
5500029 Filter element and method of manufactureExpiredApr 25, 94Mar 19, 96[B01D]
5328492 Filtration apparatusExpiredFeb 18, 93Jul 12, 94[B01D]
5256175 Hot gas filterExpiredMar 04, 92Oct 26, 93[B01D]
5238478 Ceramic filter element and method of manufactureExpiredMar 23, 92Aug 24, 93[B01D]
5223138 Reinforced ceramic filter candle and method of making sameExpiredFeb 04, 91Jun 29, 93[C04B, B01D]
5209844 Hot gas filter with jet pulse cleaningExpiredAug 08, 91May 11, 93[B01D]
5152815 Type 114 tiered filterExpiredSep 05, 89Oct 06, 92[B01D]
5071457 Composite for filtering hot gas and method of its manufactureExpiredFeb 27, 87Dec 10, 91[C02B, B01D]
5037461 Filtration apparatusExpiredSep 25, 89Aug 06, 91[B01D]
4968467 Hot gas filterExpiredJul 10, 89Nov 06, 90[C04B, B01D]
4909813 Jet pulse extenderExpiredMay 30, 89Mar 20, 90[B01D]
4865629 Control of particle size distribution in gas filtrationExpiredJul 05, 88Sep 12, 89[B01D]
4741841 Method and apparatus for particle separationExpiredJun 16, 86May 03, 88[B01D]
4725356 Tubular pressure filterExpiredFeb 10, 86Feb 16, 88[B01D]
4713174 Mounting arrangement for a tube-type filter elementExpiredJul 22, 86Dec 15, 87[B01D]
4664752 Desalination systemExpiredNov 26, 82May 12, 87[B01D]
4526688 Pressure filter with vibratory impactorExpiredOct 05, 81Jul 02, 85[B01D]

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