Patent Protection Ended
| No. | Patent No. | Title |
| 8841. | PI 91001412 | 6-BENZOXAZINYL- AND 6-BENZOTHIAZINYL-2, 3, 4, 5- TETRAHYDROPYRIDAZIN-3-ONES. |
| 8842. | PI 91001413 | GAS PHASE POLYMERISATION. |
| 8843. | PI 91001414 | METHOD FOR MODIFYING CONCRETE PROPERTIES. |
| 8844. | PI 91001415 | LEAD FRAME FOR ANODES OF ELECTROLYTIC CAPACITORS AND PROCESS OF MANUFACTURE OF ELECTROLYTIC CAPACITORS USING SUCH A LEAD FRAME. |
| 8845. | PI 91001416 | MOUNTING AND GROUDING CONNECTORS FOR ELECTRICAL COMPONENTS. |
| 8846. | PI 91001417 | ONE STEP TEST FOR ABSOLUTE COUNTS. |
| 8847. | PI 91001418 | INSECT REPELLENT. |
| 8848. | PI 91001420 | CALCIUM AND TRACE MINERAL SUPPLEMENTS. |
| 8849. | PI 91001422 | DETERGENT COMPOSITION. |
| 8850. | PI 91001423 | SUBSTITUTED PYRROLES. |
| 8851. | PI 91001426 | PREPARATION OF NUCLEI FOR ANATASE PIGMENT |
| 8852. | PI 91001427 | METHOD AND APPARATUS FOR PRODUCING ACTIVE CARBON USING CARBON-CONTAINING MATERIAL. |
| 8853. | PI 91001428 | NOVEL PRESSURIZATION PSA SYSTEMS FOR THE PRODUCTION OF HIGH PURITY PRODUCT GAS. |
| 8854. | PI 91001431 | AUTOMATIC LOCKING SYSTEM. |
| 8855. | PI 91001432 | APPARATUS TO DISPENSE DIFFERENT AMOUNTS OF PRE-SELECTED VOLUMES OF LIQUID AND RELATED IMPROVEMENTS THERETO. |
| 8856. | PI 91001435 | INHALATION DEVICE. |
| 8857. | PI 91001436 | TOOTHBRUSH USING SUCH APPARATUS |
| 8858. | PI 91001437 | APPARATUS AND PROCESS FOR THE FLAME-RETARDANT TREATMENT OF TEXTILES. |
| 8859. | PI 91001438 | PICTURE SUPERPOSING CIRCUIT. |
| 8860. | PI 91001440 | A VALVE |
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