EXPIRED PATENTS

Disclaimer : The utility displays the Patents that have ceased to be in effect u/s 53(2). The displayed list is dynamic (Real time basis) and may be updated upon official actions u/s 60 (Restoration). Actual legal status may confirmed from the respective jurisdiction of Patent Office. The list also depends upon the digitization status of Patents. Therefore, descripancy, if any should be communicated to respective Patent Office at: delhi-patent@nic.in, mumbai-patent@nic.in, chennai-patent@nic.in, kolkata-patent@nic.in

* Note: Please select 'ALL' in Field of Invention to return the complete list. Data in other fields is subject to availablity of Field of Invention in the database

TERM EXPIRED

FIELD OF INVENTION

 
Sr.NoApplication NumberPATENT NUMBERDATE OF PATENTDATE OF CESSATIONTITLE OF INVENTIONSTATUS
1 1703/DEL/1998 232966 18-Jun-199818-Jun-2018"A TRANSMITTER AND A RECEIVER FOR CDMA COMMUNICATION SYSTEM"TERM EXPIRED
2 1683/DEL/1998 226270 18-Jun-199818-Jun-2018"AN IMPROVED PROCESS FOR THE PREPARATION OF MOLYBDEMUM DISILICIDE (MOSI2)-REACTION BONDED SILICON CARBIDE (RBSC) COMPOSITE USEFUL AS A STRUCTURAL CERAMIC MATERIAL"TERM EXPIRED
3 842/DEL/2005 243244 18-Jun-199818-Jun-2018"A METHOF FOR ENHANCING THE CRACK PROPAGATION RESISTANCE OF A STEEL PLATE"TERM EXPIRED
4 840/DEL/2005 243639 18-Jun-199818-Jun-2018" A STEEL PLATE FOR CRYOGENIC APPLICATIONS."TERM EXPIRED
5 1680/DEL/1998 215612 18-Jun-199818-Jun-2018"AN IMPROVED PROCESS FOR THE PREPARATION OF PRIMER FORMULATIONS USEFUL FOR THE PROTECTION OF METALLIC STRUCTURES AND COMPONENTS AGAINST CORROSION AND ABROSION."TERM EXPIRED
6 1340/MAS/1998 205217 18-Jun-199818-Jun-2018A POWER SEMICONDUCTOR MODULE HAVING A PLURALITY OF SUBMODULESTERM EXPIRED
7 1710/DEL/1998 215029 18-Jun-199818-Jun-2018"A PROCESS FOR LIQUEFYING A GAS STREAM RICH IN METHANE"TERM EXPIRED
8 1714/DEL/1998 220169 18-Jun-199818-Jun-2018"SYSTEMS FOR VEHICULAR, LAND-BASED DISTRIBUTION OF LIQUEFIED NATURAL GAS"TERM EXPIRED
9 1691/DEL/1998 232605 18-Jun-199818-Jun-2018"AN APPARATUS FOR SEPERATING PARTICULATE MATERIAL"TERM EXPIRED
10 1702/DEL/1998 220654 18-Jun-199818-Jun-2018''APPARATUS FOR PROCESSING, STORING, LIQUEFIED NATURAL GAS AND A CONTAINER FOR THE SAME"TERM EXPIRED
11 1705/DEL/1998 214396 18-Jun-199818-Jun-2018"A FUEL STORAGE CONTAINER AND A SYSTEM THEREOF"TERM EXPIRED
12 1685/DEL/1998 215342 18-Jun-199818-Jun-2018"AN IMPROVED PROCESS FOR THE PRODUCTION OF ESTERS FROM CARBOXYLIC ACIDS USING MODIFIED CLAY CATALYSTS"TERM EXPIRED
13 1700/DEL/1998 241203 18-Jun-199818-Jun-2018"A PROCESS FOR THE PREPARATION OF OMEPRAZOLESODIUM FORM B"TERM EXPIRED
14 1086/CAL/1998 195785 18-Jun-199818-Jun-2018AN IMAGE COMPRESSION APPARATUSTERM EXPIRED
15 1708/DEL/1998 215345 18-Jun-199818-Jun-2018"A METHOD OF WELDING A BASE METAL TO PRODUCE A WELDMENT"TERM EXPIRED
16 845/DEL/2002 221597 18-Jun-199818-Jun-2018"PHARMACEUTICAL COMPOSITION COMPRISING 5-[4-[2-(N-METHYL-N-(2-PYRIDYL)AMINO)ETHOXY]BENZYL]THIAZOLIDINE-2,4-DIONE AND METFORMIN OR METFORMIN HYDROCHLORIDE SUITABLE FOR THE TREATMENT OF DIABETES"TERM EXPIRED
17 1338/MAS/1998 212421 18-Jun-199818-Jun-2018A METHOD AND APPARATUS FOR PRODUCING A FUEL GASTERM EXPIRED
18 1341/MAS/1998 224285 18-Jun-199818-Jun-2018FUNGICIDAL MIXTURESTERM EXPIRED
19 1682/DEL/1998 215670 18-Jun-199818-Jun-2018"AN IMPROVED PROCESS FOR THE PREPARATION OF MIXTURE OF CATECHOL AND HYDROQUINONE FROM PHENOL"TERM EXPIRED
20 1693/DEL/1998 249114 18-Jun-199818-Jun-2018NOVEL METHOD OF TREATMENTTERM EXPIRED
       
12345678910...