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Patent Protection Ended

No. Patent No. Title
701. PI 86000240 PROCESS FOR THE RECOVERY OF TIN FROM OXIDE OR OXIDE/SULPHIDE STARTING MATERIALS/CONCENTRATES WHICH CONTAIN LITTLE TIN
702. PI 86000241 A BREAD OR OTHER CEREAL-BASED FOOD IMPROVER COMPOSITION
703. PI 86000242 BASE ELEMENT FOR THE PRODUCTION OF PANELS FOR A TOY CONSTRUCTION SYSTEM.
704. PI 86000244 DISC-DRIVE-COMPATIBLE MAGNETIC TAPE CARTRIDGES.
705. PI 86000247 A NEW METHOD FOR THE OXIDATION OF AN OXIDIZABLE CHARGE IN THE GASEOUS PHASE AND A REACTOR FOR IMPLEMENTING THIS METHOD.
706. PI 86000248 REGULATOR FAULT PROTECTION CIRCUIT
707. PI 86000249 DIGITAL TELEVISION SYSTEM WITH TRUNCATION ERROR CORRECTION
708. PI 86000250 APPARATUS FOR GENERATING A SET OF COLOR MIXTURE SIGNALS ASSOCIATED WITH A SET OF COORDINATE AXES FROM A PAIR OF QUADRATURE RELATED COLOR MIXTURE SIGNALS ASSOCIATED WITH A DIFFERENT SET OF COORDINATE AXES.
709. PI 86000251 METHOD AND APPARATUS FOR LIQUEFYING FUSIBLE MATERIAL SUCH AS GLASS
710. PI 86000252 APPARATUS FOR HEATING MATERIAL,PARTICULARLY FOR LIQUEFYING GLASS BATCH MATERIAL
711. PI 86000256 BAG HOLDING DEVICE
712. PI 86000259 CYCLOPENTYL ETHERS AND THEIR PREPARATION AND PHARMACEUTICAL FORMULATION
713. PI 86000260 AN OPTICALLY PURE PIPECOLOXYLIDIDE HYDROCHLORIDE AND A PROCESS FOR ITS PREPARATION
714. PI 86000262 METHOD AND APPARATUS FOR MELTING AND REFINING GLASS MATERIAL
715. PI 87000001 LOCKS
716. PI 87000002 PROCESS FOR THE START-UP OF A FISCHER-TROPSCH REACTOR
717. PI 87000004 PHARMACEUTICAL COMPOSITION FOR COMBATING MALARIA.
718. PI 87000005 SOLVENTLESS, POLYIMIDE- MODIFIED EPOXY COMPOSITION
719. PI 87000007 PRINTED CIRCUIT BOARDS
720. PI 87000011 COMPOSITE USEFUL FOR PAINT TRANSFER AND METHODS OF USE AND PREPARATION THEREOF.