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Patent Protection Ended

No. Patent No. Title
20321. PI 99000547 METHOD FOR PRODUCTION OF MELEIC ANHYDRIDE
20322. PI 99000559 VINYL ACETATE CATALYST PREPARATION METHOD
20323. PI 99000563 METHOD FOR PRODUCING POLYMER MIXTURES COMPRISED OF AMINO NITRILES AND THERMOPLASTIC POLYMER
20324. PI 99000566 METHOD FOR PREVENTING LOW-TEMPERATURE DEGRADATION OF TETRAGONAL ZIRCONIA CONTAINING MATERIALS
20325. PI 99000570 MOLDED FROZEN BAR
20326. PI 99000573 DISTILLATION METHOD AND DISTILLATION APPARATUS
20327. PI 99000580 PROCESS AND PLANT FOR THE COMBINED PRODUCTION OF AN AMMONIA SYNTHESIS MIXTURE AND CARBON MONOXIDE
20328. PI 99000582 MERCURY-FREE METAL HALIDE LAMP
20329. PI 99000585 WALL AND METHOD OF CONSTRUCTING A WALL COMPRISING FIRST, SECOND, AND END MODULES AND A CONNECTION MEANS FOR TYING ADJOINING MODULES TOGETHER IN TENSION
20330. PI 99000606 PROCESS AND PLANT FOR PRODUCTION OF CARBON MONOXIDE AND HYDROGEN
20331. PI 99000607 CROSS-FEED AUGER AND METHOD
20332. PI 99000625 DUAL MODE AUTO-BALANCER FOR DVD DRIVERS
20333. PI 99000626 ACTIVE CONTROL FOR STABILIZING A SERVO-CONTROLLED ACTUATOR SYSTEM
20334. PI 99000629 SOLDERING APPARATUS, AND AGENT AND METHOD FOR SEPARATING SOLDER AND SOLDER OXIDES
20335. PI 99000630 METHOD OF COMMUNICATION BETWEEN A PLURALITY OF REMOTE UNITS AND A CONTROL UNIT
20336. PI 99000638 2-WAY RADIO WITH SILENT ANNUNCIATION
20337. PI 99000640 CLEANSING PROCESSING AGENT, CLEANSING METHOD EMPLOYING THE AGENT AND A MOLDED STRUCTURAL MEMBER
20338. PI 99000641 MULTI-CARRIER TRANSMISSION SYSTEM, TRANSMISSION UNIT AND TRANSMISSION METHOD
20339. PI 99000659 GARBAGE FERMENTING APPARATUS
20340. PI 99000662 MAGNETIC RECORDING METHOD AND APPARATUS FOR DIGITAL SIGNALS, MAGNETIC REPRODUCING METHOD AND APPARATUS FOR DIGITAL SIGNALS AND TAPE-SHAPED RECORDING MEDIUM