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Patent Protection Ended

No. Patent No. Title
801. PI 87000121 CONTINUOUS RELEASE PHARMACEUTICAL COMPOSITIONS.
802. PI 87000122 PROCESS AND APPARATUS FOR PRODUCING CONCRETE ROOF TILES.
803. PI 87000123 METHOD AND APPARATUS FOR NON-DESTRUCTIVE TESTING AND MAGNETOSTRUCTURAL MATERIALS INVESTIGATIONS.
804. PI 87000124 SHACKLE TYPE SEAL
805. PI 87000125 PLASTIC SEAL
806. PI 87000126 TOY BUILDING BLOCK FOR CONSTRUCTION SET
807. PI 87000127 PHARMACEUTICAL INJECTABLE AMOXICILLIN PREPARATION.
808. PI 87000131 GAS PRESSURIZED DISPENSING CONTAINERS
809. PI 87000132 DERMAL AND TRANSDERMAL PATCHES HAVING A DISCONTINUOUS PATTERN ADHESIVE LAYER.
810. PI 87000135 TONER COMPOSITION.
811. PI 87000136 PROCESS FOR PRODUCING CERIUM HYDROXIDE
812. PI 87000137 PROCESS FOR THE REMOVAL OF LEAD FROM RARE EARTHS.
813. PI 87000138 BUILT NON-AQUEOUS LIQUID LAUNDRY DETERGENT COMPOSITIONS
814. PI 87000139 BUILT NON-AQUEOUS LIQUID LAUNDRY DETERGENT COMPOSITIONS.
815. PI 87000141 FRICTION WELDING APPARATUS
816. PI 87000142 FRICTION WELDING
817. PI 87000143 PROCESS OF PRODUCING SPRAY PARTICLE.
818. PI 87000144 PERMANENT MAGNET AND PROCESS FOR PRODUCING THE SAME
819. PI 87000145 SUBMERGIBLE LARYNGOSCOPE METALLIC HOUSING FOR FIBER OPTICS POWER SOURCE.
820. PI 87000146 PROCESS FOR THE CONTINUOUS PRODUCTION OF ALUMINA FROM BAUXITES CONTAINING MONOHYDRATES USING THE BAYER PROCESS.