The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Jun. 05, 2023
Council of Scientific & Industrial Research, New Delhi, IN;
Ongc Energy Centre Trust (Oect), Delhi, IN;
Sunil Kumar, Dehradun, IN;
Avinash S. Mhetre, Dehradun, IN;
Ojasvi Sharma, Dehradun, IN;
Swapnil Diveker, Dehradun, IN;
Soumen Dasgupta, Dehradun, IN;
Manoj Srivastava, Dehradun, IN;
Anjan Ray, Dehradun, IN;
Aarti Arya, Dehradun, IN;
Prasenjit Ghosh, Dehradun, IN;
Bharat S. Mendhe, Delhi, IN;
Nammi Ramya, Delhi, IN;
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH, New Delhi, IN;
ONGC Energy Centre Trust (OECT), Delhi, IN;
Abstract
The present invention relates to a cryogenic process to produce crude helium from pretreated natural gas. The pretreated natural gas is processed in two flash stages using the helium free process stream as a stripping agent, and a distillation column with the identified operating conditions and process scheme to ensure 100% helium recovery with reduced capital and operating cost for producing the crude helium. The integration of the cryogenic process with the already known purification system to produce pure helium is demonstrated to ensure high helium recovery in a hybrid process.