| 51 | INDIAN RESEARCH INSTITUTE (MEDICARE) PVT . LTD. - U73100WB1993PTC058763 |
| 52 | INFINITI RESEARCH PVT LTD - U73200WB1993PTC059718 |
| 53 | INSTITUTE OF RESEARCH IN ORGANIC FARMING - U73100WB2013NPL197630 |
| 54 | IQ SYSTEMS AND RESEARCH PRIVATE LIMITED - U73100WB2010PTC150981 |
| 55 | ITEK HEALTH RESEARCH AND DEVELOPMENT INDIA PRIVATE LIMITED - U73100WB2012PTC172384 |
| 56 | JDM SCIENTIFIC RESEARCH ORGANISATION PRIVATE LIMITED - U73200WB2012PTC181220 |
| 57 | JEE-JAY CENTRE FOR RURAL HEALTH CARE RESEARCH - U73100WB2013NPL196437 |
| 58 | JK PLANT BIO SCIENCES RESEARCH LIMITED - U73100WB2007PLC113393 |
| 59 | KEM RESEARCH PVT. LTD. - U73100WB1993PTC057979 |
| 60 | KOLKATA DIABETES RESEARCH HOSPITAL PRIVATE LIMITED - U73100WB2011PTC162865 |
| 61 | KUSHAL AGARWAL ENTERPRISES PRIVATE LIMITED - U73100WB2014PTC200443 |
| 62 | LABH SECURITIES ADVISORY PRIVATE LIMITED - U73200WB2017PTC220874 |
| 63 | LIPROTECH (OPC) PRIVATE LIMITED - U73200WB2017OPC220079 |
| 64 | MACROTECH POLYMER SOLUTIONS PRIVATE LIMITED - U73100WB2009PTC137512 |
| 65 | MACROVISION TECHNOLOGY PRIVATE LIMITED - U73100WB2011PTC161525 |
| 66 | MAHA GANAPATI INSTITUTE OF MEDICAL SCIENCE & RESEARCH - U73100WB2005NPL102303 |
| 67 | MARSONS RESEARCH INSTITUTE - U73200WB2011NPL168245 |
| 68 | MITRA S K COAL INSPECTION PRIVATE LIMITED - U73100WB1971PTC097355 |
| 69 | MOHUA AGRO & RESEARCH INSTITUTE PRIVATE LIMITED - U73100WB2013PTC195279 |
| 70 | MRM TECHNOLOGIES PRIVATE LIMITED - U73100WB2005PTC102660 |
| 71 | MUSICAL STRING RESEARCH BUREAU PVT. LTD. - U73100WB1986PTC041013 |
| 72 | NATURAL HERBAL RESEARCH & SYSTEMS PRIVATE LIMITED - U73100WB2009PTC140556 |
| 73 | NIRIKSHA GEO SCIENCE LTD. - U73100WB1994PLC065620 |
| 74 | NRLM RESEARCH AND ADVISORY PRIVATE LIMITED - U73200WB2012PTC184574 |
| 75 | OKHYO FOOD VENTURES PRIVATE LIMITED - U73100WB2017PTC220714 |