Patents by Inventor Ashok Kumar Tewari

Ashok Kumar Tewari 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).

  • Upgradation of undesirable olefinic liquid hydrocarbon streams
    Patent number: 6153089
    Abstract: A process for converting undesirable olefinic hydrocarbon streams to hydrogen and petrochemical feedstock e.g. light olefins in C.sub.2 -C.sub.4 range and aromatics especially toluene and xylenes, which comprises simultaneous cracking and reforming at olefin rich hydrocarbons using a catalyst consisting of dehydrogenating metal components, shape selective zeolite components and large pore acidic components in different proportions in a circulating fluidized bed reactor-regenerator system having reactor temperature within 450-750.degree. C. and WHSV of 0.1-60 hour.sup.-1.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: November 28, 2000
    Assignee: Indian Oil Corporation Limited
    Inventors: Asit Kumar Das, Sukumar Mandal, Sobhan Ghosh, Debasis Bhattacharyya, Ganga Shanker Mishra, Jagdev Kumar Dixit, Arvind Pratap Singh, Ashok Kumar Tewari, Satish Makhija, Manoranjan Santra, Latoor Lal Saroya, Shankar Sharma, Satyen Kumar Das