Kabushiki Kaisha Hosokawa Funtai Kogaku Kenkyusho

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4550879 Vertical type pulverizing and classifying apparatusExpiredFeb 10, 84Nov 05, 85[B02C]
4529135 Grinding crusherExpiredMar 03, 83Jul 16, 85[B02C]
4490601 Apparatus for manufacturing metallic fine particles using an electric arcExpiredFeb 25, 83Dec 25, 84[B23P, B22F]
4292172 Apparatus for classifying particlesExpiredApr 15, 80Sep 29, 81[B07B]
4290790 Filter apparatus and filter support framesExpiredJan 09, 80Sep 22, 81[E04B, B01D]
4279165 Apparatus for measuring cohesion force of particulate materialsExpiredNov 13, 79Jul 21, 81[G01N]
4260478 Apparatus for classifying particlesExpiredNov 28, 79Apr 07, 81[B04C, B07B]

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