Patents by Inventor Pramod Jayant Nandapurkar

Pramod Jayant Nandapurkar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Utilization of linear alpha olefins in the production of metallocene catalyzed poly-alpha olefins
    Patent number: 9469704
    Abstract: The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 18, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Margaret May-Som Wu
  • Low viscosity polyalphapolefin based on 1-decene and 1-dodecene
    Patent number: 7592497
    Abstract: The invention relates to a method of making a PAO from mixtures comprising 1-decene and 1-dodecene, characterized by a low viscosity and excellent cold temperature properties, using a promoter system comprising an alcohol. In embodiments, the product has properties similar to those obtainable using a feed of solely 1-decene.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: September 22, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Norman Yang, Pramod Jayant Nandapurkar
  • Utilization Of Linear Alpha Olefins In The Production Of Metallocene Catalyzed Poly-Alpha Olefins
    Publication number: 20090221775
    Abstract: The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.
    Type: Application
    Filed: December 22, 2008
    Publication date: September 3, 2009
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Shakeel Tirmizi, Margaret May-Som Wu
  • High viscosity polyalphaolefins based on 1-hexene, 1-dodecene and 1-tetradecene
    Patent number: 7547811
    Abstract: This invention relates to the use of olefin mixtures containing 1-hexene/1-decene/1-dodecene and, additionally, 1-octene or 1-decene to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to about 4000, particularly useful as lubricant base stocks.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: June 16, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Anatoly Ilich Kramer, Phil Surana, Pramod Jayant Nandapurkar, Norman Yang
  • Low viscosity PAO based on 1-tetradecene
    Patent number: 7544850
    Abstract: Disclosed herein is a method of making a PAO using tetradecene and particularly mixtures comprising 1-hexene, 1-decene, 1-dodecene, and 1-tetradecene, characterized by a low viscosity and excellent cold temperature properties, using a promoter system comprising an alcohol and an ester. In embodiments, the product has properties similar to those obtainable using a feed of solely 1-decene.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: June 9, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria Caridad Brillantes Goze, Pramod Jayant Nandapurkar, Norman Yang