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Patent Protection Ended

No. Patent No. Title
1281. PI 87000723 HYDROPHOBIC ASSOCIATIVE COMPOSITION CONTAINING A POLYMER OF A WATER-SOLUBLE MONOMER AND AN AMPHIPHILIC MONOMER
1282. PI 87000725 ARYLKYLIMIDAZOLE DERIVATIVES.
1283. PI 87000726 REMOVAL OF HYDROGEN SULFIDE
1284. PI 87000727 PRELUBRICATED FINSTOCK
1285. PI 87000728 TWO STAGE CIRCULATING FLUIDIZED BED REACTOR AND METHOD OF OPERATING THE REACTOR.
1286. PI 87000730 METHOD FOR ANALYZING THINLY BEDDED SAND/SHALE FORMATIONS
1287. PI 87000731 METHOD FOR DETERMINING THE DISTANCE BETWEEN ADJACENT WELLS
1288. PI 87000733 GRID CEILING
1289. PI 87000734 GRID TYPE CEILING
1290. PI 87000735 PANEL CARRIER
1291. PI 87000736 SUSPENDED CEILING ASSEMBLY
1292. PI 87000738 ELECTRICALLY DRIVEN COMPRESSOR.
1293. PI 87000739 SCROLL COMPRESSOR
1294. PI 87000742 THE USE OF ETHYLENE OXIDE/PROPYLENE OXIDE BLOCK COPOLYMERS FOR CONTROLLING FOAM IN LIQUID PHARMACEUTICAL FORMULATIONS, PHARMACEUTICAL FORMULATIONS, AND A PROCESS FOR THEIR PREPARATION
1295. PI 87000744 CERTAIN SUBSTITUTED 3-AMINO-2-BENZOYLCYCLOHEX-2- ENONES
1296. PI 87000746 CERTAIN 3-(SUBSTITUTED THIO)-2-BENZOYL-CYCLOHEX- 2-ENONES
1297. PI 87000748 FIREPROOF MATERIALS AND THEIR PRODUCING PROCESSES.
1298. PI 87000749 TRANSPORTING DIRECTION CONTROLLING DEVICES FOR CONVEYOR SYSTEMS.
1299. PI 87000750 A PROCESS OF FORMING A NEGATIVE PATERN IN A PHOTORESIST LAYER.
1300. PI 87000751 CLASP, ESPECIALLY FOR BRACELET