Patent Protection Ended
| No. | Patent No. | Title |
| 20521. | PI 99001633 | METHOD FOR POLYMERIZING CONTACT LENSES HAVING UV ABSORBING PROPERTIES |
| 20522. | PI 99001635 | USE OF NMDA ANTAGONISTS FOR TREATMENT OF IRRITABLE BOWEL SYNDROME |
| 20523. | PI 99001646 | TRACTION TYPE ELEVATOR APPARATUS |
| 20524. | PI 99001647 | METHOD FOR SEPARATING OF A C4-HYDROCARBON MIXTURE |
| 20525. | PI 99001649 | IMIDAZO PYRIDINE DERIVATIVES WHICH INHIBIT GASTRIC ACID SECRETION |
| 20526. | PI 99001650 | IMIDAZO PYRIDINE DERIVATIVES WHICH INHIBIT GASTRIC ACID SECRETION |
| 20527. | PI 99001653 | DISK DRIVE WITH COMPOSITE SHEET METAL AND ENCAPSULATED PLASTIC BASE |
| 20528. | PI 99001661 | STATUS INDICATOR FOR ELECTRONIC DEVICE |
| 20529. | PI 99001662 | FOOTHOLD PROVIDED WITH REFLECTORS |
| 20530. | PI 99001663 | HIGH DENSITY ELECTRICAL INTERCONNECT SYSTEM HAVING ENHANCED GROUNDING AND CROSS-TALK REDUCTION CAPABILITY |
| 20531. | PI 99001666 | STRIP CASTING APPARATUS. |
| 20532. | PI 99001670 | CONDENSED THIENOPYRIMIDINES WITH PHOSPHODIESTERASE-V INHIBITING ACTION. |
| 20533. | PI 99001672 | METHOD AND DEVICE FOR DISPOSING OF LUBRICANTS FROM A PLAIN BEARING |
| 20534. | PI 99001673 | FLAME-RETARDANT RESIN COMPOSITION AND ITS USE |
| 20535. | PI 99001697 | APPARATUS AND METHOD OF OPERATING A HEAT PUMP TO IMPROVE HEATING SUPPLY AIR TEMPERATURE |
| 20536. | PI 99001702 | COATING PIGMENT FOR INK-JET PRINTING |
| 20537. | PI 99001709 | OPTICAL INTERCONNECTION SYSTEM |
| 20538. | PI 99001710 | COMMUNICATION EQUIPMENT, CHARGING TERMINAL STRUCTURE AND ISOLATING SWITCH. |
| 20539. | PI 99001720 | WASHING MACHINE |
| 20540. | PI 99001728 | DUAL CHAMBER ION BEAM SPUTTER DEPOSITION SYSTEM |
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