Patent Protection Ended
| No. | Patent No. | Title |
| 4221. | PI 88001182 | SUBSTITUTED TETRALINS,CHROMANS AND RELATED COMPOUNDS IN THE TREATMENT OF ASTHMA,ARTHRITIS AND RELATED DISEASES |
| 4222. | PI 88001183 | A LOCKING MECHANISM WITH MASTER KEY AND SUBORDINATE KEY |
| 4223. | PI 88001184 | SIO2-PROMOTED COBALT CATALYST ON A SUPPORT OF TIO2-FOR CONVERTING SYNTHESIS GAS TO HEAVY HYDROCARBONS |
| 4224. | PI 88001185 | PAGER WITH VISIBLE DISPLAY INDICATING STATUS OF MEMORY |
| 4225. | PI 88001186 | AMINOMETHYL OXOOXAZOLIDINYL ETHENYLBENZENE DERIVATIVES USEFUL AS ANTIBACTERIAL AGENTS |
| 4226. | PI 88001188 | TOOTHBRUSH |
| 4227. | PI 88001190 | METHOD OF PURIFYING PROTEIN |
| 4228. | PI 88001191 | ANTITUSSIVE LIQUIDE COMPOSITIONS CONTAINING PHENOL |
| 4229. | PI 88001192 | HAIR CARE COMPOSITIONS |
| 4230. | PI 88001193 | DISPOSABLE ABSORBENT ARTICLES FOR INCONTINENT INDIVIDUALS |
| 4231. | PI 88001194 | A CONTROLLED RELEASE PHARMACEUTICAL DOSAGE FORM AND A PROCESS FOR PREPARING SAME. |
| 4232. | PI 88001196 | BENZOTHIAZINE DIOXIDE DERIVATIVES |
| 4233. | PI 88001197 | ANTI-ANXIETY AGENTS |
| 4234. | PI 88001199 | AZETIDINYL QUINOLONE CARBOXYLIC ACIDS AND ESTERS. |
| 4235. | PI 88001201 | PREPARATION OF CYCLOBUTARENES VIA THE STEAM PYROLYSIS OF AROMATIC DERIVATIVES |
| 4236. | PI 88001203 | PACHINKO MACHINE |
| 4237. | PI 88001205 | NON-DISSIPATIVE MEMORY SYSTEM |
| 4238. | PI 88001206 | ROOM AIR CONDITIONER |
| 4239. | PI 88001207 | DUST-PROOF FILM |
| 4240. | PI 88001209 | PROCESS FOR PRODUCING N-PHOSPHONOMETHYLGLYCINE. |
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