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Patent Activity in the Last 10 Years


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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5841055 Method for controlled refining of explosive compositionsExpiredJun 11, 97Nov 24, 98[F42B]
4815382 Connector and detonator/connector assembly for initiating explosive primers with low-energy detonating cordExpiredNov 25, 87Mar 28, 89[F42B, C06C]
4799428 Explosive primer unit for instantaneous initiation by low-energy detonating cordExpiredApr 06, 87Jan 24, 89[F42D, F42B, C06C]
4796533 Primer assemblyExpiredMay 06, 87Jan 10, 89[F42B, C06C]
4776276 Cast explosive primer initiatable by low-energy detonating cordExpiredMay 06, 87Oct 11, 88[F42B, C06C]
4718345 Primer assemblyExpiredMar 25, 85Jan 12, 88[F42B, C06C]
4714503 Emulsion-containing explosive compositionsExpiredOct 02, 86Dec 22, 87[C06B]
4637312 Explosive primer and carrier thereforExpiredMay 01, 85Jan 20, 87[F42B, C06C]
4619721 Emulsion-containing explosive compositionsExpiredOct 15, 85Oct 28, 86[C06B]
4585496 Method of producing high-density slurry/prill explosives in boreholes and product made therebyExpiredMar 11, 85Apr 29, 86[C06B]
4555278 Stable nitrate/emulsion explosives and emulsion for use thereinExpiredJan 29, 85Nov 26, 85[C06B]
4495867 Assembly for initiating explosives with low-energy detonating cordExpiredJun 18, 82Jan 29, 85[C06C]
4486317 Stabilization of thickened aqueous fluidsExpiredSep 07, 82Dec 04, 84[E21B, C09K, C06B]
4481884 Field-connected explosive booster for initiating low-energy explosive connecting cordsExpiredDec 28, 81Nov 13, 84[F42B]
4462429 Apparatus and method for transferring a Bingham solid through a long conduitExpiredMay 06, 82Jul 31, 84[F17D]
4429632 Delay detonatorExpiredApr 27, 81Feb 07, 84[F42C, C06C]
4380482 Stabilization of water-bearing explosives having a thickened continuous aqueous phaseExpiredJan 16, 81Apr 19, 83[C06B]
4369688 Method and apparatus for producing a detonating cordExpiredMay 19, 80Jan 25, 83[C06B]
4369708 Delay blasting capExpiredSep 21, 79Jan 25, 83[F42B]
4343663 Resin-bonded water-bearing explosiveExpiredJun 30, 80Aug 10, 82[C06B]

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